Amc dogleg heads. You otta get you a set of Hermans heads.

• Amc dogleg heads i. You can use 7/16" head bolts on a dogleg swap, or drill and tap the block for 1/2". Done. Decent set of ported heads and a Torker. Send Private Message. That's the reason why you need the step dowels. The Edelbrock heads flow better than the dogleg heads straight out of the box, and also provide a little more compression than the 58cc dogleg heads. I think there were some writeups a while back regarding AMC heads and flow. Port Size: 1. 6:1.  · AMC Apprentice Joined: Aug/28/2009 Location: Clancy, MT Status: Offline Points: 151 Post Options. Anybody try to find stock valves lately? It shows a set of heads i'm Forum Home > The Garage > AMC V8 Engine Repair and Modifications Are they not dogleg ports?EDIT I did find that pic online and you are correct. The AMX crowd, for purity, will stick with them. It’s more like the original head with a dogleg exhaust There were two versions of the 343 piston. Sort. Both are just copies of original steel head design. Jan 30, 2013 #3 2013-01-31T03:17+00:00.  · My old repro Thorleys have around a 1" distance from the outside surface of the flange where the dogleg is blending in. 3:1 compression ratio combined with the stock stroke by way of JE pistons and heads, which were ported, polished and received valve changes from Crane. If you go with the "incorrect" AMC freeflows I suspect you will like the outcome much better. Also, if installing headers be sure to turn the lower control arm ecentric bolt around so the heads face the headers rather than the nut and bolt end. They also moved the centre intake to head bolts. 9L - 360ci - V8. References have been made in the past that the dogleg exhaust was race developed prior to the 1970 model year calender~in 1969. Personally I would have never done it, but to answer your question, there is nothing mechanically wrong with doing it So what has everyone else done with making 2" headers. Quote skynless. AK/AMC wrote: Got the amc javelin couple of months ago and was suppose to be 90% built but not the case, and got know info on is whats so ever. Part of the cost is the labor charge of $675. Report Post Thanks(0) Quote Reply Topic: Bridged vs non-bridged dogleg heads Posted: Nov/02/2013 at 7:13am: What are the pros cons? What year did they switch to bridged? 1968 Rebel SST 343 1968 Ambassador SST 343 AMC Addicted Joined: Oct/22/2013 Location: SF Bay Area Status: Offline Points: 3489 Post Options. Port Stainless Steel Header Flange . tomw135 (136) 100% positive; Seller's other items Seller's other items; Contact seller; US $1,800. Questions are powerful tools You need step dowels to locate a dogleg head on a 290/343/early 390. Basically, there are two different design cylinder heads — before and beginning of 1970 and up. Part # 3196291-C cylinder heads with dogleg exhaust ports. I am half a step away to bolting a set of indy 401-1 heads on my 390. To get better insight into the last and best of the AMC V-8 blocks, we took a trip over to Northridge, California, to meet with Larry Ofria at Valley Head Service  · I heave read where several people have used dogleg port headers on rectangular port heads. I have a set of nascar heads that have been welded and had the bolt spacing widened. 343, 360, 390 and 401 heads are the same parts, year for year, the main differences in the years are as follows: 2. Quote SportaboutX. Edited by Greyhounds_AMX - Apr/02/2016 at 3:09pm These heads have the mopar ports and of course my headers are dogleg. Thanks in advance. stickshifter. Appear to never have been run. This high-quality AMC 360 head ensures that your engine operates at peak Dec 11, 2015 · To recap, Ronnie Kaplan had dogleg port heads on the '69 TA Javelins. These header flanges are designed for the 304-401 C. Recommended 10 degree locks for solid or roller. I believe some 1971 360 and 401 came with 291C heads as well until the change came. Port Size: 1 3/4" or 1 7/8" available Preformed stubs are 2"-3" long, and have one end perfectly formed to the port shape of the flange, drastically decreasing your overall design and build time. trying to save some cash on rebuild so i gasket matched intaketo the heads,need some tips as to where Forum Home > The Garage > AMC V8 Engine Repair and Modifications AMC Apprentice Joined: Jul/19/2014 Location: loveland Status: Offline Points Take out the bump in the dogleg Assembled heads come with hydraulic, solid, or roller springs good up to . 5" sizes NASCAR May 24, 2022 · We were recently alerted to a social media post on Indy Cylinder Heads’ Facebook page showing a new AMC build, which brings out all kinds of nostalgic muscle car enthusiasts. Boris Badanov . Then it just comes down to cam selection, and a lot of that depends on your preferences. Thats odd because my heads look almost like that but are not sectioned AMC Nut Joined: Jul/27/2012 Location: Superior, Wi Status: Offline Points: 405 The car has decent longtube headers for the dogleg heads and 2. Uses Indy part #401-6SR rocker studs (7/16). I checked the alignment of the  · 1967-69 AMC heads had a rectangular shaped exhaust port with a convex port floor. that is the benefit of the indy head. dont know much about the heads but was pretty sure they had the dog leg exhaust ports. Year Range: 79-91. indy does move the intake valve over a little on the race head. 5:1. The photos displayed a 500 cubic inch AMC 401 aluminum block and big port 38 0 cfm aluminum heads with a big-volume single-plane intake combo that will make up to 900  · The dog-leg heads used 1/2 head bolts, the 68/69 used 7/16. For one thing, there is no such thing as "390" heads. Edited by billd - Sep/28/2010 at 10:05pm. Quote strokerx. 1970 & up had a re-shaped "dogleg" exhaust port shape and a concave port floor. An additional 4150 Holley manifold with wider ports is made to match with the 401-1 race heads.  · You need the "one year only" log manifolds for the dogleg heads. 5" dual exhaust I'd likely keep the exhaust it has without a reason to change them. The only year that this port shape was available with the small chamber heads was 1970, so the '70 360/390 is thus the best choice for swapping with any '66 and later AMC engine. Port Size: 1 3/4" and 1 7/8" port flanges That's not true. 291C heads are not that rare either.  · AMC Apprentice Joined: Jun/30/2010 Location: medford ma Status: Offline Points: 227 Post Options. bolt spacing widened. New standard intake and exhaust valves, springs, valve guides (cast iron inserts), spring retainers and valve locks, three-angle grind, hard seat for unleaded fuel. Looking for some good heads for the 401 we're building for the AMX, I've been Oct 13, 2003 · Your 304 heads already have dogleg exhaust ports, as do all 1970+ AMC V8 heads. The 8558 heads are 67-69 343/390 square ports with 7/16 head bolts. ) P/N 7530 RPM Air-Gap AMC (non-EGR, for 1970-91 304-401 c. All three displacement blocks had their deck height increased from 9. FOLLOW @VisnerEngine for builds, info, and more Aug 11, 2000 · There are actually quite a few part numbers for AMC V8 heads, but they usually supercede to the latest one. The whole point of this was to continue Jun 12, 2019 · The Inventor of the Dogleg Heads. The AMC V8 may refer to either of two distinct OHV V8 engine designs developed and manufactured by American Motors Corporation (AMC) starting in 1956.  · If you have ever measured combustion chambers on production heads you will begin to get the impression that those blueprint specs were either just a good intention from the design engineer, a figment of the guy who was responsible for putting the information on a piece of paper to print, sloppy record keeping for something that was  · The two inboard mounting holes for the intake were moved when the dogleg heads were introduced in 1970, so you will need to modify the intake - either slot the 2 inboard mounting holes (each side) on an early intake, or cut down the intake to head surfaces on the later intake. 9L - 360ci - V8 - Cylinder Head. Customer must supply cam specs. Pay attention to oiling but it doesn't need anything special. Part#: ALL-11308. My understanding was that the dogleg heads flow the best for our engines. Hope you get a chance to work it out. They are 3/8" flange, and really high quality.  · Partiot headers advertises a Shorty header with dogleg ports as a direct replacement for "68" 343 square port heads. Quote jcisworthy. Adding headers only adds top-end power, but at the expense of losing low-end torque. The machine shop called me today, after having my heads for a week. Plenty of intake options, here are a couple to kick off with: RPM Air-Gap AMC (non-EGR, for 1967-69 290-390 c. Get the casting # and can tell what year heads they are. California Status: Offline Points: 4524 Post Options. Pickup only in Southern NH, 03046 Square port and dog leg heads have basically the same intake port location and size. 00 (1 offer) - Buy AMC 3196291C Dogleg Cylinder Block Heads 3195529 . another AMC vendor told me there was a shop in Los Angeles that AMC was using that helped design and build these heads for the guys in Fremont California. Not the dogleg ports. I was Mar 6, 2014 · The S/S was also given a 12. head was the tube to flange attachment weld bead(s) that had been . Report Post Thanks(0) Quote RTV on the end rails and water jacketes instead of the rubber end rail seals, the later intake on the early block with dogleg heads should still work OK. ok here's the next part, the block casting number is 3190806 which should be and is a 7/16 head bolt block. 5:1 with the later heads and can be raised back up to 9. but with the heads bolted on the block the narrow (68-69) intake is too narrow. GULP! AMC Addicted Joined: Feb/21/2015 Location: Minnesota Status: Offline Points: 876 Post Options AMC factory head bolts are also plenty strong enough and unless the engine has been apart and put back together multiple times they too will be fine. 625 set up. Quote AMXFSTBK390. 50 to R&R my '73 360-401 heads. I'd like to buy a set of flange adapters from dogleg to like a Chevy stahl pattern but I haven't had any luck finding someone to make them. I changed from old Hedman 1 5/8" dogleg headers that were welded and port matched to coated Hooker 1 7/8" (7103-1) that needed grinding to match the ports. They require step dowels in all four corners to align them properly - or drill and tap the block for 1/2" head bolts and use the regular dogleg head dowels. I thought the dogleg gakset would leak because there was a section on the head that wasnt covered where the dog leg on the gasket curved around at least that is how it looked, then I got a reply from a concerned member that he DID use the dogleg gakets on square port heads and they sealed and it was the AMC Fan Joined: Jun/01/2013 Location: Phoenix Status: Offline Points: 5 Post Options. Will they work? PATRIOT EXHAUST H8600-B 1 5/8" CLIPPSTER DIRECT REPLACEMENT HEADER WITH DOG LEG PORTS 68-70 AMX, JAVELIN, REBEL, AMBASSADOR 290-390 71-74 JAVELIN, REBEL, AMBASSADOR 304-401 72-79 AMC Stainless Steel Header Flange. Post Reply. With the dogleg heads, the 304's numbers COULD put those hp-to  · Iron head has the same issue and the Trap heads have the exh. Cylinder Heads & Parts Engines Components For Sale. Chart is not wrong at all. ) P/N 7531 Torker for the early engines 2935 Torker for the later engines 2930 AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2815 Post Options. Jan 18, 2025 · In 1970, two significant changes were made to the AMC V8 engine. The Dougs Headers DO have dogleg ports to match that of the head. AMC V8 engines with the square/rectangular port heads. Report Post Thanks(0) Quote Reply Topic: 343 Stroker Posted: Aug/28/2012 at 6:12pm: Is it possible to I know about the step dowels etc. Latter bridge rocker heads went back to a narrow push rod guide slot that worked well. Quote mixed up. Pictures of heads failed.  · AMC Apprentice Joined: Jul/18/2007 Location: Ironton,OHIO Status: Offline Points: 86 Post Options. 838"  · The issue with either gaskets are dogleg gasket is very near the outer edge of the rectangle port flat surface on the head or the rectangle port gaskets is near the inner edge of the dogleg flat surface flange on the header. 200 Edited by Hurst390 - Mar/08/2015 at 7  · AK/AMC wrote: Got the amc javelin couple of months ago and was suppose to be 90% built but not the case, and got know info on is whats so ever. If you put dogleg heads on a Gen 2 block, the holes on the gen 2 intake need to be slotted, or the gen 3 intake needs to be narrowed to fit the gen 2 block. I did it on my 290 Javelin many years ago and the headers sealed OK for me using dogleg gaskets. Everything is from a 71 amc javelin. 750″ lift. Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota A good 2 1/4 exhaust system with AMC free flows, a better intake, an electronic ignition setup and 600 - 650 carb will feel like a rocket ship compared to the stock engine and the cost is pretty cheap. It seems like the Indy might be the best choice as they have a larger combustion chamber, 64cc verses the Edelbrock 54cc or the stock 51-58cc. AMC Addicted Joined: Mar/15/2012 Location: Toms River, NJ Status: Offline Points: 758 Post Options. 208″ and the cylinder heads received an important redesign. Completely refurbished AMC dogleg heads - no cracks, all new parts, 3 angle valve job, springs will support up to a . Iron AMC Heads,Block,Crank, 4-speed. Report Post Thanks(0) Quote Reply Topic: Need Advice for Dog leg Heads Posted: Apr/05/2016 at 12:41pm I heard some talk of using dog leg heads on the 390 to help achieve this. 34 posts 1; 2; 3; Next; Visner Engine Development, LLC 8603 Savannah Dr Saranac, MI 48881 Phone: 616-726-6600 Fax: 616-726-6601 Contact Us. The other cylinder head Indy offers is more stock, in that it uses AMC exhaust ports. You can still use the 7/16 bolts. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Oct 13, 2003 · It's been rumored that the "dogleg" port heads flow a little better. Contrary to popular belief, the rectangle port heads are not junk. The 1970 to early-71 heads with 51cc chambers (casting number 319-6291), and the mid-70 to mid-73 58cc heads (casting  · The guide plates were designed to fix the problem with out completely replacing the heads. 65 x 8mm valves Specializing in dyno Today’s aftermarket big-valve heads from Indy and Edelbrock (shown) give AMC V8s a new lease on life. Report Post Thanks(0) Quote Free-flow exhaust manifolds were used on '71 and up V-8's (therefore they are all for dogleg heads). Made for the AMC V-8 engines with dog leg port cylinder heads; Premium 100% T-304 USA made mandrel-bent 18-gauge stainless steel Available in 1-3/4”x3", 1 7/8"x3", or 1 7/8"x3.  · AMC Apprentice Joined: Aug/30/2016 Location: Lake Bluff IL Status: Offline Points: 56 Post Options. I ordered a set and the box said for a 70 but they were square , I went to hedman( small tube )and they have been a pain since day one . AMC Apprentice Joined: Aug/10/2007 Location: Canada Status: Offline Points: 19 Post Options. Good pistons are a must, good aftermarket rods are a good idea. , From a port and polish job.  · The 291C heads are dogleg and do need a few things done to make the fit, you will need step dowels to locate them since they take larger 1/2" head bolts, the middle intake bolt holes won't line up with the corresponding holes in the heads, hence the need to either slot the intake or drill and tap additional holes in the heads and you will have to change over to dog leg  · I'm seeking solid documentation pertaining to when the dogleg exhaust port first showed up on an AMC road race or Nascar GT race car. These engines were used in cars and trucks by AMC, Kaiser, and International Harvester, as well as in marine and stationary applications. Now if you just want headers, yes dogleg ( 304=360-401) I JUST put a set of Doug's on a 1969 AMX 390 4spd go pack car. Additional motor parts available if needed. Quote BBBAMX70. Bottom line is the only reason to think about seeking out a set of 291s is the combustion chamber size. In 71 and up 360's and 401's also use the same heads. but you still need to check block IMO. a set of untouched 3196291-c heads (52cc dogleg heads made in 1970). 1968-1969 390 AMC heads. 838" Preformed stubs are 2"-3" long, and have one end perfectly formed to the port shape of the flange, drastically decreasing your overall design and build time. Buzzman72void where prohibited, your mileage may vary, Re: AMC 304 Heads Post by swatson454 » Fri Aug 02, 2013 4:47 pm Here's a question, and I may be way off in the weeds here so forgive me if I'm being retarded: can you think of an exhaust port that flows similar to the 304 that I Quote Reply Topic: amc HEADS/CRANE Posted: Oct/24/2009 at 10:29pm: I NEED SOME INFO ON A SET A HEADS I HAVE ON MY AMC JAVELIN 390, Well, 401's have dogleg ports which is better than the retangular ports, head bolts on a 390 are 7/16's, 401 has 1/2 bolts, AMC 360/390/401 Rect. A little known fact is the dog leg heads were over sold as 50% better flow. In 1970 both the 360 and 390 had 291C heads. Even with a mild cam performance won't benefit from headers. All '70+ AMC V8 heads employ the "dogleg" exhaust ports, and flow much better than the earlier ones with rectangular ports. Quote Calcommon. S. Either way, the intake requires machining if using dogleg heads on a 68/69 block. Made for the AMC V-8 engines with dog leg port cylinder heads (manufactured from1970 & newer) Premium 100% T-304 USA made mandrel-bent 18-gauge stainless steel Available in 1-3/4”x3", 1 7/8"x3", or 1 7/8"x3. If you use square port gaskets, the headers will leak because of a void right at the dogleg. View . Cylinder heads produced from 1970 have a dog leg exhaust port while 1968-69 cylinder heads have a rectangular exhaust port. Doglegs Forum Home > The Garage > AMC V8 Engine Repair and Modifications AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5959 Post Options. Report Post Thanks(0) Quote On the cheap dogleg headers I had, the surface that seals to the . I have always done the stainless Chev 2. The centre mounting holes for the intake AMC interchangeability is pretty good and you are likely fine. White70JavelinSST .  · AMC Nut Joined: Oct/10/2012 Location: Cedar Rapids,IA Status: Offline Points: 298 Post Options. Browse Products. did AMC raise the deck height on some of the late 7/16 head bolt blocks. Report Post Thanks(0) Quote Reply Topic: 390 square port heads verses 390 square port head and a set of 401 doglegs and looking to future build witch head flow better square port or the dogleg heads 69 amx 290 auto 65 220 290 4spd 80 ford fairmont Stainless Headers Mfg, Inc. Report Post Thanks(0) Quote have been wondering about dogleg heads on the RV8. Mpn: 3196291c. You'll need stepped locating dowels in the block. Quote IdahoSpud. This would be several months before these heads showed up on production AMC's. In a 360, the two barrel 343 pistons at stock pin height will render a 10. your post mentions dogleg. 00 or BO. He apparently worked with David Potter, AMC's engine man. A. 05/1. AMC There is not enough there to warrant saying that using the 290 heads on a mild street engine is a necessarily bad choice. IIRC alot of heads went from 58cc AMC engine in a gas dragster. 0:1 with the early 1970 dogleg heads but that is still a lot less than the 10. I made a thread asking about putting 401 heads on my 343, but I forgot that I'd have to go from square port (which the 343 heads and headers are) to dogleg and my headers would be useless. Think  · Dog, Read my post before yours. Nothing fancy in the cam and valvetrain. Quote celcius232. I cracked one back in 1982~ this is no Can anbody enlighten me concerning the following AMC V8 head casting numbers. the intake port AMC Addicted Joined: Nov/04/2008 Location: So. Was told, This head casting was used on the Rebel Machines with the highest horsepower engines AMC made. This is from the 1970 AMA Papers on the improved 1970 AMC 390 V8. For Models: Amx .  · If you want higher compression, the 70 dogleg heads (291C) will yield nearly the same compression as the rectangular heads. Thanks for the candid observations. I believe there is a forum member making big tube headers for AMC, but I don't recall which one offhand. AMC Fan Joined: Dec/15/2018 Location: Nebaska Status: Offline Points: 10 Post Options. com. View Universal items for: AMC, ALL AMC V8s: DOGLEG HEADS. d. Keith Coggins 67Rogue X code H60 . 2:1 compression ratio with early pistons and early heads. One was from the writeup on the AMC V8 oil bypass mod. This header build kit has everything you need to bring that Fender Exit AMC Dogleg custom header together. Apr 10, 2019 · Super Stock racing in the NHRA is a fascinating exercise in maximizing a combination inside a very tight box of rules. Every shop and  · Aluminium heads from Indy and Edelbrock might flow a little better than stock iron heads. AMC Nut Joined: Aug/29/2013 Location: Michigan Status: Offline Points: 256 Post Options. So I guess the answer to your question is you couldn't simulate the trapezoid shape unless you moved the header flange hole over about . A 70 390 had 10. Although the "dogleg" term has come to be used to describe the unique port outlet shape,  · The 70 up intakes are wider as Red said. herman heads are an aluminum dogleg version of a trapezoid head. 291-C heads will give you more compression but are prone to cracking and people demand silly money for them. AMC V8, 360, 390, 401  · He said that Amc had retired one of their engineers and this engineer was living Arizona. 360 and 390 four barrel engines in 1970 use the same heads, the 291-C's. It fired right up on the first try, I broke it in, and it has been running great ever since. Description: 79-91 AMC 5. That Valley Head Service brought the AMC mechanic out of retirment and designed the head. Oct 17, 2012 · i will find out on the second set, the first set are 291  · Later model engines dropped way down to 8. They were on a worked 343 in my rebel. I was basically told I've been told by many AMCers that the freeflow cast exhaust manifolds flow better than the stock cam/head setup needs. Jan 18, 2014 · There are 2 desirable subtypes of AMC V8 heads. What I said about iron dogleg heads out flowing most aftermarket heads was meant as a comparison to most other makes aftermarket heads, such as F@rd, etc. The only difference between the 360/401 heads, and your 304 heads is valve size: 304  · These heads have outstanding features that include premium one-piece, stainless steel, high flow valves, heat treated and machined steel retainers and valve locks, seals, bronze wall valve guides, 3 angle valve job, and heavy Get the best deals for Amc Dogleg Heads at eBay. Quote THE MENACE. The engine is a 1968 390. 4 Are you guys telling that there are no flow benefits of reshaping the standard dogleg exhaust port into a trapezoid Going to loose some compression vs the original 51CC heads, and there's no advantage to running dog leg heads unless you tailor the camshaft intake and exhaust lift and duration to take advantage of the exaust port on the later heads otherwise it's going to be a wash as far as performance, as tuning can be done to take advantage of the higher compression heads as well. Casting numbers in pic. Basically, the only difference between the heads is valve size and combustion chambers. I. The Super Competition headers are made from 18-gauge steel and feature a dogleg  · This will be the thread for flow data on AMC Cylinder Heads. You can put dogleg heads on your engine. Way bigger intake runner than any oem head Correct, the intake valve were further apart, but mine had normal dogleg exhaust ports and the 291-C numbers still in the casting. All large valve AMC heads flow about the same on the intake side. Asking $50. Machined for stud mounted or Jesel rockers. 025 intake/1. Here is a free-flow Dog leg port exhaust manifold kit for your 1970-91 AMC V8. Quote PHAT69AMX. At lower rpm's there is almost no difference in power. In 1973 the  · AMC Addicted Joined: Jun/16/2015 Points: 2254 Post Options. This first group of info was posted by Ken Parkman: Even though the raw data does not show the dogleg to be that much better, add a stub and the dogleg really shines. I said the heads are 1973 dog-leg heads which have a 58 cc combustion chamber. You will see the ports on the Edelbrock heads are smaller in size when compared Yes it is, but I think you are confused. Upgrade your vehicle's performance with the premium AMC 360 Cylinder Heads designed specifically for the 5. All data is at 28" H2O unless otherwise noted. AMC lists a tolerance for chamber volume. They come as you see needing full rebuild. 165″ to 9. Will this even matter to you? Depends on your use. Send Private Is there a way to tell if the heads on my 1968 AMX are square port or dogleg port without removing the Forum Home > The Garage > AMC V8 Engine Repair and Modifications The casting number on a 1968 AMC 390 head is 318 8558 rectangular exhaust ports. Using dogleg headers on my suqare port 343 heads. very mild. Quote budryzer. You can get an idea.  · AMC Nut Joined: Feb/27/2015 Location: Victor Montana Status: Offline Points: 447 Post Options. These header flanges are designed for the AMC 304-401 cid engines with the dog-leg heads. Uses aftermarket AMC 360-401 roller rocker arm. Sep 24, 2000 · Hooker even makes a dogleg header, as did most other brands at one time. you can buy thicker intake gaskets to use these heads on your engine. 1/1. and are machine surface. mbwicz .  · There's been a few discussions on this subject here. Port Size: 1 3/4" and 1 7/8" port flanges Jun 8, 2024 · Prepping AMC V-8 Heads For Performance Use. AMC Addicted Joined: Apr/04/2010 Location: Alabama Status: Offline Points: 985 (or less) heads for sbc are so popular 1975 Cherokee S - Turbo Hemi stick shift autocross/drag race/street 9. It will help them some, but the only thing you will save is weight. They have a hybrid head, which is a 440 Chrysler cylinder head made to fit an AMC block with a Chrysler exhaust flange pattern. One had 14cc valve reliefs for the 2 bbl engine and the other had 3cc reliefs for the 4bbl engine. Replaces cracked, warped, or damaged originals; All-new heavy-duty high-flow castings patterned after originals; T-304 stainless steel exhaust manifold bolts and steel air injection plugs Fits all 1970-91 AMC 304, 360, and 401 V-8 engines with dog-leg port cylinder heads  · AMC Addicted Joined: Apr/28/2014 Location: Largo, FL Status: Offline Points: 3551 Post Options. I have stock heads on it now but I'd like to get a set of aluminum heads and figured if they flowed more then stock the larger primary would be needed anyway especially with the tunnel ram. Refering to 360 AMC heads as "Weak" though, Is completely inaccurate. 051 head gasket: Bore: (diameter) Stroke: Cylinder Head Volume: Effective Dome Volume: Deck Clearance: He builds Amc engines and has the knowledge and info on doing the 360 crank in a 343 block. » AMC, ALL AMC V8s: DOGLEG HEADS Products for: Engine Make: AMC; Engine Family: ALL AMC V8s: DOGLEG HEADS View Universal items for: AMC, ALL AMC V8s: DOGLEG HEADS. IIRC alot of heads went from 58cc Find many great new & used options and get the best deals for 1970-71 AMC Javelin AMX Hornet V-8 401 360 304 dogleg cylinder heads 3212993-1 at the best online prices at eBay! Free shipping for many products! AMC 360 Block, Dogleg Heads and Crank. Cylinder Heads & Parts for AMC American, Window Cranks & Parts for AMC Eagle, Cylinder Heads & Parts for AMC Javelin, Here is a set of Edelbrock Performer RPM heads for the AMC V8 vs. There are interesting photos afloat, including the headers on the Penske Javelins. Used set of heads that will need a rebuild.  · Check piston height also. Top. 68 with later 58cc heads. Using the lower deck intake means the centre holes need to be slotted or re-drilled. 030 the compression ratio should be about 9. AMC V8, 360, 390, 401 I know there isn't a whole lot out there aftermarket wise for AMC, Edelbrock being the only one I can think of. No dents but some slight surface rust. A DIY porting job isn't going to give any significant gains unless you KNOW what you're doing and have actually had AMC heads on a flowbench in the past, have done porting mods then flow, repeat. The only real difference The Eddy heads are a good choice if your heads need a pile of work. I hate to scrap them. You're probably going to want the extra head bolts at that point too. The 52cc closed chamber heads are rare, but ordinary dogleg heads are a dime a dozen. I have a '69 AMX with a 390 / 4spd and on the Hot Rod Power Tour I talked with an Edelbrock Tech about using their shorties on my '69 heads. Items 1-7 of 7. For Years: 1970 . Report Post Thanks(0) Quote Reply Topic: Dogleg heads with diff bolt patterns? Posted: Jul/05/2012 at 3:18pm: Anyone know if I beleive you can only buy BIG tube headers from Hooker for dogleg heads, The books say they are for dogleg but they are not . Both heads have the superior dogleg exhaust port and studded rocker arm mounts. Block casting #3195528 For the street I'd stick with ported AMC heads or Eddys, Indy 401-SR if you really want that last bit of power. Would the dogleg heads be worth the switch ?Increase torque at a given rpm increases HP. Earlier heads had smaller combustion chambers and thus netted higher compression with stock pistons, but the poorer exhaust flow still makes them a sub-optimal choice. 5 compression ratio with 50. Also, the later heads have 1/2 head bolts and the earlier  · If the heads have not been milled or the block decked, you might get away without machining the intake. Report Post Thanks(0) Quote Reply Topic: head bolt - header clearance Posted: Aug/18/2007 at 2:14am: I used ARP head bolts in a 390 rebuild - now it appears Hooker Super Comp headers for dogleg AMC heads. Bought stainless Chrysler valves at yard sale for 50 bucks so I posed the question. 2 to 1 compression from the factory. Report Post I've used Rectangle port header gaskets to seal dogleg manifolds to the early heads . They want $1,181. Find Members Posts. The engine is a 390 with the 401 dogleg heads. so I assume we are talking the exhaust. should be correct for your block, based on the additional bolts added note the engine has been rebuilt at some point. 97 @ 140. Report Post Thanks(0) Quote Reply Topic: Heads for 343 street engine Posted: Sep/20/2020 at 3:11pm So I have a freshly rebuilt AMC 360 (dogleg heads), standard bore, new pistons, Summit K8600 cam, hydraulic lifters, Edelbrock double-roller timing chain set, performer intake, 600 cfm carb. Once you start getting into cam AMC Apprentice Joined: Sep/21/2019 Location: Salinas, CA Status: Offline Points: 74 Post Options. Precision laser cut from 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U. I heave read where several people have used dogleg port headers on rectangular port heads. Members Profile. Early blocks have 7/16" head bolts, 70-up blocks have 1/2" head bolts. --All Dog Leg Exhaust Port Heads use 1/2 inch Head Bolts and move the two inner intake manifold bolt holes closer together. Report Post Thanks(0) AMC Addicted Joined: Nov/10/2011 Location: West Coast Status: Offline Points: 1013 Post Options. Quote myrambler. 5" sizes; NASCAR style merge collectors & scavenger spikes; 3/8” flanges are CNC machined to clear the spark plugs and head bolts An advantage of the aluminum is that it doesn't hold heat as well as the iron heads which allows you to run your compression about a point higher prior to detonation with the same fuel. flat tappet but have no AMC 360/390/401 Rect. You otta get you a set of Hermans heads. I had to have my R4B milled to fit, but it was neither extensive nor expensive. Would the same concerns exist with Dogleg heads as well? Since the heads are rect. For Makes: Amc . A 650 AVS Eddy carb or 650 Holley is plenty big enough for what you Made for the AMC V-8 engines with rectangular port cylinder heads Premium 100% T-304 USA made mandrel-bent 18-gauge stainless steel Available in 1-3/4”x3", 1 7/8"x3", or 1 7/8"x3. AMC Addicted Joined: Nov/04/2008 Location: So. I ported/polished the 360 dogleg heads on my 360 and there was definitely a difference in the engine from the get-go. also the heads do have the x cast into them. I am guess. With stock type 390 pistons . The earlier square port heads are somewhat rare, and few people want to use them due to the reduced flow characteristics. I'd prefer adapters to make it easy to get to the header bolts but if I could find some starter flanges that are dogleg to 2" round I would buy those. Using the dogleg head allows use of free-flow exhaust manifolds, but requires modification of the intake. The flange itself is 7/16", so overall, call it maybe a skimpy 1-1/2" or so from the outer surface of the head to the end of the transition. Quote sweatlock. 500 lift cam - free shipping in 48 states - for 1970 and later engines - Thank you. Report Post (also modified to fit dogleg heads). Report Post I'm considering the dogleg heads myself and picked up a 1968 390 intake, so it sounds like the same mating concern as for the OP. These were used on AMC 360, 390 and 401 engines. This 51cc chamber Fender Exit Header Build Kits: AMC Dogleg Head V-8. The 1970 to early-71 heads with 51cc chambers (casting number 319-6291), and the mid-70 to mid-73 58cc heads (casting numbers 321-2993 and 321-3948). These header flanges are designed for the AMC 304-401 cid engines with the square port/rectangular port heads. sku: 2214539388526131. Great for building that set of fender exit headers for any roadster, racing, or performance application. port I may just redo them stock and use them. Uses Indy part #401-7SR guide plates (5/16 or 3/8). Sep 24, 2018 · A single-plane manifold that mates to 4150-series Holley carburetors is offered to fit stock AMC heads (with modifications) or Indy’s own 401-SR street heads. Some very credible numbers can be put up by AMC heads, Almost 300 cfm per cyl.  · Spend your money on a good intake, carb and exhaust that are well suited and matched to your engine's build and you will see much better results than swapping out your  · The 360 engines never came with square port heads, only dog-leg (1970+). A good option would be to find a set of 1970 304 heads (casting number 517) that have the smaller combustion chamber and the dogleg exhaust port and the 1/2" head bolts. They’re based on the superior ’70-and-up AMC dogleg exhaust-port configuration, but AMC 360 Engine assembly fresh from the machine shop, block shot peened and heads magnafluxed with valves ready to be assembled. 773. Jump to Latest I have a 1971 engine block #3195527 and the dogleg heads #3199517 for sale. flat tappet but have no All Dogleg port heads have the same exhuast ports and thus can use the same exhaust manifolds or headers as long as they are the ones for the smaller American body. Dan Curtis-Owner and CEO AZ AMC Restorations; Facebook All AMC v8's went to the dogleg head in 1970. There are 2 desirable subtypes of AMC V8 heads. Items 1-7 of 7 AMC 360/390/401 Rect. Report Post Thanks(0) Quote Reply Topic: dog-leg heads on 1968 390 Posted: Jun/12/2014 at 5:21pm I have an AMC 401 engine for sale, Rotating Assembly Balanced at Machine Shop, Block Machined @30, Crank machined@30, Dogleg heads resurfaced with new valves, springs, and seats, rebuilt connecting. So the parts aren't mismatched, I've got square port headers on square port heads. Quote Jav69. California Status: Offline Points: 4460 Post Options 1971 amc 304 heads. AMC knew what they were doing with that. These changes were major enough to consider the engine a third generation of the AMC V8, and as such, it is referred to as the GEN-3 engine. Quote captrambler. Report Post Thanks(0) Quote Reply Topic: Bridged vs non-bridged dogleg heads Posted: Nov/02/2013 at 7:13am: What are the pros cons? What year did they switch to bridged? 1968 Rebel SST AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 15810 Post Options Chart is not wrong at all. 02 intake & 1. Manufacturer: AMC. Located in Mississauga, Ontario. Quote four4fish. I have a seemingly new set (actually several sets) of the correct 343 pushrods but I was reading an old Dick Dotson publication today and a guy named Don Wright advises that one should use the later 360/390/401 pushrods if one is installing a dogleg head on a 343 block. Their headers don't look convential either. Even with relatively "junk" heads as compared to the 304 doglegs, a 4-barrel version was rated at 195-210 gross horsepower. Engine Size: 5. 6 cc early dogleg heads or 9. with the 1/2 bolts with crane stamped in the casing, on top of that the lifters apear to be the hydro. Earlier are more desirable as they had the --All Rectangular Exhaust Port Heads use 7/16 inch Head Bolts. . I just finished port and polishing a set of Edles. I'd recommend switching to dogleg heads, free flow exhaust manifolds, and "Machine"-ing your existing intake manifold. flow), rockers are stud mounted, pushrod guides  · But I remember the old 250 Rambler V8. (sort of one year only) Sorry I don't think I have better photos of the exhaust. All 360 AMC heads from the factory were equiped with 2. $1,750. Add to Buddy List. Dogleg heads out flow square ports on the exhaust side. Pre-'70 390s had a rectangular port head that didn't flow nearly as well as the dogleg configuration; pieces from 1972 and later had 58cc chambers, thinner casting heads, and larger coolant Indy Cylinder Heads makes two different aluminum heads for AMC packages. 00. Quote mlbiegl. Machine owners: were they also used on '70 Rebel Machines? Nov 17, 2021 · AMC 327 engine is from a completely different design. leaked around the welds on both sides. AMC 360/390/401 Rect. When you're done everything looks stock, but performs better and runs on unleaded. Port Mild Steel Header Flange. You'll need to re-drill the heads or slot the intake manifold because the 2 center intake bolts are placed differently. 4th Gear. 62 exhaust valves, "dogleg" exhaust ports (50% better ex. 680 exauhst valves, And due to the dogleg port design, flowed better than most small block head designs. Designed to fit the AMC V-8 dogleg heads. Rich Rinke knows a thing or two about Super Stock racing, so when his 1969 AMX needed a Aug 1, 2013 · Here is a list of some flow charts for amc heads, the exhaust port is the same basically for the dog leg head, 304 has a smaller valve. AMC V8 engines with the dog-leg heads. Yes, there are odd race heads made by AMC, but these are rare.  · It seems like my choices are 1970 heads (small chamber), later dogleg heads (larger chamber), Edelbrock, or Indy. Report Post but don't flow as well. The newer dogleg exhaust port heads flow better than the 390 heads do. Report Post Dogleg heads with 2. 9L - 360ci - V8 engines from 1979 to 1991. If I went with Indy, I don’t want the version that has the Mopar exhaust ports. 5" sizes NASCAR style merge collectors & Obviously you're going to want dogleg heads on either motor. These are the big 1 7/8” primaries. Intake valve diameter Nonethless, if you added a 600 or 650 double pumper, intstalled a dual poinst distributor and cranked up the advance a bit, changed out the intake to an R4B, added headers (before freeflows or dogleg heads were available) and installed an upgraded cam, lifters and performance vavle springs then you could easily jump the AMC 390 right up to 350 360 Block, 58CC Dogleg Heads, Stock 343 (4V) Pistons with a Cometic . Report Post Thanks(0) Quote Moving to 58cc dogleg heads from a later model 360 would be a step in the right direction (assuming you would want to use pump gas), moving the CR to 9. tzxv tyfht ovk gcnh ayc geznefd egibm zqid emhaagb debx