Th350 transmission leaking from tailshaft. So I'm filling it and it starts leaking out of some hole.

Th350 transmission leaking from tailshaft I bought it at Rockauto. My dad's 84 short bed c10 had a long tail or 9 inch tail th350 in it and we put in a th350 6 inch short shaft, all bolts up perfectly, just need the driveshaft 3 inches longer. i need to at least stop a couple of the many leaks from the old original th350 in the 75 until i can I've determined that my 700R4 transmission is leaking on my 87 R10 truck. and there are some transmission professionals here that could give the spec TH350 Transmission Pan Leaks! The best way we have found to get them to stop leaking is a RTV called "The Right Stuff". Find TCI StreetFighter TH350 Transmission 311090 - 9" Tailshaft at LSXceleration with Free shipping on qualifying orders! Toggle menu. Is there any special procedure for removing it? I went looking for the usual youtube video, but there doesn't seem to be any We put in a new converter in and the trans is still leaking on my th350 trans. About 2/3 down the slip yoke, one side of the splines get wider by a 1 - 24 of 143 results for Transmission Shift Shaft Seal Compare Filter/Refine. 2011 Road King. Designed to fit my generic TH350, but should fit a bunch of GM transmissions of that era. INVISIBLEKID, Dec 7, 2022. _____ Mike 1972 Chevy K20 , 350, Long Bed All 67-72 two wheel drive with 350 Turbo's had a 6 inch tailshaft. I had the classic issue where tail shaft leaked Hi everyone, here's my problem. I am wondering if I should continue to trust this guy or take it to a real transmission shop. The transmission is a TCI Superglide with roller bearing tailshaft. This thing was leaking pretty bad. Fairlane Dave. After having a leak from the transmission oil pan at the seal. Be careful not to damage the inside seal when installing it. What are your thoughts? I know I'm probably missing something. A few months back I notice tranny fluid leaking from the rear seal. I've heard of removing the tailcone and (cutting?) the output shaft. how do i do it and can it I believe there is one snap ring that holds the tailshaft to the drum. Why or how can a transmission leak out the yoke? I guess there is a hole in the center of the casting? The guy that put this truck together,really used some undesirable engineering,he put a 10 bolt posi from a 2nd gen camaro in this 81 chev truck,the rear is off center and the yoke doesnt appear to be slid into the trans tailshaft far enough,it is not leaking around It seems like the torque converter may be draining back into the transmission and when it reaches the leaking level it starts. Our trusted TH350 performance transmission kits include a TH350 transmission, Tailshaft Length. This metal sleeve and included oring will prevent fluid from reaching and leaking out of the yoke at the rear of the TH400 Tailshaft housing leak kit. It slides out without having to lower the transmission. MJ406, TH350 w/Vigilante 3000, QP 9" w/3. I am confused as I thought the short shaft would have been in the 4x4 due to transfer case length and the long shafted trans should have come out of a 2wd car. My question is, what would it take to convert the tailshaft of a 2wd th350 into a 4wd output. Transmission Tailshaft Plug Kit Prevent fluid leaks from your transmission tailshaft during driveshaft removal with this Lisle 5-piece transmission plug set! The set include five different adapter plugs to fit into the transmission tailshaft during TH400 and TH350 GM Automatic transmissions are notorious for leaking. 00 gear True Trac, full Wilwood disc, Viking Coil overs, Transmission was rebuilt a few years back and has always leaked. th350 transmission tail shaft housing – 6″ short steel – double bearing. Last year I decided to start actually Check the pan gasket, speedo gear housing, vacuum modulator, and governor housing first. Lay down some cardboard. 3K views I have been told you can cut the output shaft of a short tail shaft th350 (and clean up the splines) and it will work in a 4wd. The second time he removed the transmission and did a complete reseal at no extra charge. We don’t share your credit card details with third-party sellers, and we don’t sell your information ICT Billet TH350 TH400 PAN BOLT SET I have the driveshaft out of my Camaro, and wanted to plug the tailshaft to avoid leaking transmission fluid, so I designed and 3D-printed one! Transmission tailshaft plug TH350 by patman2 This is a plug for the tailshaft of But good chance it is leaking out of one of the easy to do ones. The tailshaft swap sounds like a PITA. Any problem with just using the short tailshaft TH350 and a longer drivershaft? I already have a long driveshaft from an 80's Impala. Transmission Drive Type. Just kidding. The tranny is in my shop. I couldn't believe the factory thought a tight metal-to-metal fit would keep fluid from weeping out. Do it all at once. one thing to consider about the transmission is that the seal maybe okay, but your driveshaft has worn where the seal touches it. What spline is my T-350 input shaft? Jump to Latest Ok so I know my th350 output shaft is 27 spline. 06 out of 5 stars Powerglide Automatic Transmission. so i want to change output shafts. while standing still. I just pulled the 283 out of my 57. I am a Mopar guy and have had my head stuck in the sand for a long time, but i was always under the impression there was jus a long and short shaft TH350--but all the charts list 3 lengths. You need to jack the rear up as far as you can so your fluid doesn't leak out. CT90632 - Everything needed to completely seal up the leaking problem at the rear of your aluminum powerglide Transmission, 1962 & up. And with only 60 miles after re-installing Episode 97 of Bad Hombre Garage: my car has been leaking transmission fluid pretty bad, and the speedometer isn't very accurate. Thread starter mr j-man; Start date Mar 12, 2011; 1; 2; length as a Trimatic, obviously all the rest are longer. I didn't want to get a longer driveshaft made up because I intend to swap to a TKO600 this winter anyways. One person found this helpful. I had the truck up on jack stands working on the exhaust for a few days with the front of the truck higher than the rear. Get some rags(or old junk shirts), or scott towel and wipe the heck out of that transmission. It is a regular garage, not a transmission shop. It always pukes out the tailshaft vent for some reason. I don't know who the idiot was who rebuilt the transmission for the previous owner, but I ended up installing helicoils in FOUR pan bolt holes and two for the tailshaft housing bolts. After a few days it started leaking again. Scored a rebuilt TH350 today for non the less, It can't be leaking up high, I'll also run a vent line down to the tailshaft, although not needed. He is a member of the Sonnax Cast Iron, TH350, TH350C, TH400 Automatic Transmission, Remanufactured, Forward Shift Pattern, Automatic/Manual Valve Body, Chevy, TH350, Each. 1974 Nova Hatchback 383/ TH350/ 12 bolt 4:11 soon to be 4 speed car Wanted 4 SPEED PEDAL ASSY Nova/Camaro will work. If I pull the whole rear Every TH350 I've had seeps somewhere , the odd drip on the floor is not uncommon. This could explain why it sets a few days before leaking. Then you remove 1 bolt that holds the lever that touches the rooster comb. I also recently purchased a performance th350 which was previously in a 4x4, it has a long tailshaft. While you have the driveshaft out, you can double check the u-joints - they should move nice and smooth. There is a small internal O-ring that seals where the cable sleeve slides into the transmission and bolts to the case. This is a plug for the tailshaft of the transmission so that the fluid doesn't leak out while the driveshaft has been removed. Also included is an additional inside Get the Best Performance with JEGS Transmission Pan Gasket GM TH350 60981 parts at JEGS. CT Solutions Everything needed to completely seal up the leaking problem at the rear of your TH350 Transmission. 4 mm) Trans Model. th350 transmission tail shaft housing – 9″ long steel – double bearing. The local automotive stores only had the cork type I wrecked my 9" tailshaft th350 friday night and was able to get an awesome deal on a rebuilt th350 with a 6" tailshaft. Helpful. No. Each TCI StreetFighter transmission comes equipped with a manual/automatic That being said, chances that you’re using a GM vehicle with the TH350 transmission are high if the car is a model launched around these years. The problem started when I replaced the stock oil pan for a new one. Simple check before transmission surgery: TH350 Transmission Seal Filter Kit; Automatic Transmission External Gasket Seal Reseal Kit for Turbo 350 TH350 TH350C Rebuild Kit. The engine runs great, the transmission shifts great, and WTF, the transmission leaks exactly like the original one, and even I didn't believe that, but it brings us to my original post, and IMHO, the answer to your question. The 72 has about a 6 inch housing where the 75 is much longer. Sort By: Compare. Now to find a new or good used Product Description. I was also told that the tailshaft may have porosity and it can be Most TH350 transmissions have a can shaped part pressed on to the tail Total novice. skeeter2 Discussion starter. I went to a transmission shop to inquire about replacing the seal and was told to replace the shaft bushing along with the seal. It fits GM power glides, GM th350, Saginaw, Muncie, bert and brinn transmissions. 88. 2nd. Everything on this car was leaking something the tranny is no exception. I had a problem that I thought was a rear tranny seal leaking. Logged #1: The easiest and most obvious solution to any problem is 99% of the time correct. My question is this . They can be changed so that's probably not a real big deal if you are buying a core to rebuild (or have built). 3 Year Limited Warranty. That’s until I swapped the electric speedo with a cable and had to remove the I have another TH350 from a 75 Lesabre I had last year. . Status Not open for further replies. if you don't see oil ,check the kickdown cable on the right front side . I have a th350 behind a sb 350 in a vega. Still leaks. SHARE POST #1. This will not only give you a bit of comfort but will make cleanup easier. OP, no need to V8 trimatic leaking from breather. TH350 Front Pump Leak Sealing Kit 1969-Up Turbo 350 Transmission CT3403 - TH350 leaking from the front? Solve the problem with our front pump leak sealing kit for the GM TH350 Transmission, 1969 & up. I just keep putting fluid in it. I did pull the shaft from an old TH350 case that I have. 21. SHIFT SHAFT SEAL; and probably the shaft also. But with this new cable, I’m back to smooth sailing on the open road. The TCI StreetFighter automatic transmissions for Chevrolet engine applications is tough enough to withstand the rigors of the toughest street machines. The new seal will have a sealant on it so all you have to do is tap it in place. This is a 1970 Cutlass that originally had a 2 bbl carb so I assume it is a TH350 tranny. It seems the fluid drips come from above (I'm not 100% sure. Jump to Latest 29K views 2 replies 3 participants last post by SSedan64 Apr 5, 2011. Part Automatic Transmission Tailshaft Adapter, Aluminum, Natural, GM, 700R to TH350, Each. Get a mirror and make sure. Transmission Mfr. Includes outer oring and inside metal clad gear seal to stop leaking at your speedometer housing. The difference is the extension housing. Add to Cart. #2: There is no such thing as impossible, it just The th350 transmission was finally phased out in 1984 and replaced with the 700R4 since the 700R4 had become people’s choice. 58 out of 5 stars. Have rebuilt tail shaft housing: New bushing, Torque converter drainback is a common issue with the TH350 transmission as it ages. While if i have the long version of the TH350 the 700R4 would be better transmission to go with. What is the best way to take what I have and make 1 good short tail TH350 without enlisting a trans shop? DETENT BOOT SEAL TH350 Transmission for Passing Gear Kickdown Cable. Replaced the badly damaged th350 (had big chunks of metal in the pan when I pulled it) with a 2004r, cleaned things up some. i have a th350 long that lost 2nd gear. 89s. There is a small hole below the tailshaft where the fluid (which enters the space between transmission and transfer case) drains back into the Transmission - Hutch's Transmission Service. Each TCI StreetFighter transmission comes equipped with a manual/automatic 1970 Nova, 406 SBC TH350 03 Heritage Softail Anniversary Black and Silver. Bottom of floors near tailshaft had trans fluid on em, obviously had been leaking for a while, left drips on floor, thought it was rear seal. I'm not sure if the TH350 is like the TH400 in this case, butif so, there may be a second seal hiding in your transmission that needs to be removed. We are going to get a bit wet laying on our back. The tail shaft to case seal is just a large "O" ring. Please login or register. S. C3 Tech/Performance - TH350 Shifter Shaft Seal Replacement (with pics) - Hello, I just successfully completed this Friday afternoon. Have fluid dripping from the back end of tranny but after wiping everthing dry, it is dripping from the inside of the U-joint, between the yoke and the cross if I am describing this right (the seal on the outside that is visible is dry). Last year I had the gears in the rear end changed and a new tail shaft seal was put in the transmission, but I don't know about the bushing. I thought about buy a new gasket from a local automotive store. The bushing is fed with trans fluid which lubricates the tailshaft. Outside A new speedo housing leak stop kit for the GM TH350 Transmission, 1969 & up. Remove the wide clip on the selector shaft. Jointly developed by Chevy and Buick, it is also referred to as TH350 transmission. This maybe something to check with a set of calipers. Pump can leak , which is where the converter is located. I can certainly sympathize with you, the trans fluid makes a mess under the car, and it's probably a fire hazard too. These transmissions are able to handle up to an astounding 725 horsepower. I recently Transmission, TH350, TCI StreetFighter, w/ 9" Tailshaft. The trans has the short tailshaft. Seal wears the shaft, replace both. Reply. I had to buy the tube/dipstick as the donor transmission did not have one. Common as dirt on TH 350. Transmission & Driveline TH350 leaks when sitting but does it usually leak out of the gasket around the pan or the tailshaft, somewhere else maybe? my 69 does this and i haven't had time to look at it yet Many times it's the dipstick tube seal or kickdown cable seal leaking when the converter drains down after a few days. 350s are known for leaking there and running around the front of the trans. Summit Racing™ Tailshaft Seal and Bushing Kits. TH350's that were originally used behind larger engines typically have more plates in the clutch packs than transmissions that were used behind smaller engines. I've had the truck running a couple of months and the leaks have progressively gotten worse. the fluid coming out of the breather can also be caused by the fluid being low allowing the pump to suck air causing bubbles/foaming wich just keeps causing the fluid to foam eventually pushing it out of the breather. the deal is i know a guy that has a 74 gmc truck that has a newer all i have to do is pull the tailshaft off and bolt the transfer case inbetween it and the transmission. 5. So I noticed a transmission fluid leak on the TH350 in my '75 Chevy C20 pickup. 700r4, the primary thing that differentiates them is the number of Order a TH350 transmission kit at JEGS High Performance. I had it on stands running in gear and sure enough it coming I finally pulled the motor and trans yesterday and removed the TH350 tailshaft housing. Tailshaft End Cap Plug TH350 700R4 C4 Powerglide 2004R Output Yoke Seal. Hardware Or are there two types of TH350's. If you are to compare the th350 vs. Locate Performance Hi. There is a table of all available transmission drive and driven gears for the th350, printed below the calculators at the bottom of the page. Your speedometer housing must be the steel "bullet" style speedo housing. Was it normal for a 73 Nova to come with the 9 inch tail shaft instead of a 6 inch tail shaft? It is time for mine to get replaced and upgraded but most Th350"s have the 6 inch tail shaft and that would require getting a new driveshaft made. 2WD TH350 to 4WD TH350. Shop Now at the Guaranteed Lowest Price! $5 off $49 / $15 off $249 / $30 off $499 / $65 off $999* Quick Shift Automatic Transmission Fluid [1-gallon] $41. Mine is a 1970 so the plug type fits that. So I dug in. Here is my question: From what I understand the tranny level should not be higher than the top of the TH350 w/ Gearvendors, 3600 Converter, Home Built HEI, Junkyard Hydro Boost, QP 9” w/ 3. 2, 5 speed, std cab, Sonoma Teamsters Local 1150 :flipoff: If you look into the end of the TH350, you will notice there is a bushing pressed into the hole where the tailshaft comes through. Buy JEGS Transmission Tailshaft Rear Seal | Fits GM TH-350, Powerglide, Saginaw, Muncie 4-Speed, Bert, & Brinn Transmissions | 1 Per Package: La Speedometer TH350 700R4 OUTPUT SHAFT SEALING KIT Plug Seal & Stop Yolk Yoke (4L60) and 4L60E transmissions. 99. It has a normal mechanical speedo drive. Often this leaking is caused by scoring on the shift shaft itself, Sonnax Transmission Company 2 Imtec Lane, Bellows Falls, VT 05101-0440, USA Subject: Fluid/Oil Leak During Cold Weather from Transmission Vent (Early Models-Replace Transmission Fluid Level Indicator and Install New Transmission Vent Assembly) Models: 2001-2011 Chevrolet Silverado 2500HD-3500HD Series 2001-2011 GMC Sierra 2500HD-3500HD Series Equipped with Allison® LCT 1000 Automatic Transmission (RPOs M74, MW7) Edit: I pulled the trans dipstick. TH350. Now that you have the major grime off. $10. i have a good th350 short tail . 99 Must have to keep your vehicle’s transmission from leaking; Fits th350 chevrolet, buick, oldsmobile, It is common for the shift shaft seal in GM TH350 and TH350C transmissions to leak. It was leaking out of the kick down cable but not at the seal. The O-Ring from the dipstick had cracked and everytime the car sat for more than 3 days it would leak. Member. I planted the brand new GM 350 crate motor and rebuilt TH350 transmission in the truck. This kit will work on the TH350 extension housing with a 3/4 inch steel bullet type speedometer housing hole. Shifter shaft, KD cable, diptsick tube, speedometer gear adapter, accumulator cover, etc are a few of them. 0 Mar 31, 2010 | 11:46 AM before you pull your trans. Seems to be the shift shaft seal. If your input (pump) seal is leaking badly, it's time for a tranny rebuild, anyway. I figured maybe since I hadn't replaced the (PaPa Johns 77) But my transmission goto guy said check fluid level for an overfull condition and make sure the vent is clear! He said he has also seen that happen with a bad tailshaft bushing and excessivly worn yoke! Thanks for taking the time to check with someone else about this. So I'm filling it and it starts leaking out of some hole. CT9683 - Everything needed to completely seal up the leaking problem at the rear of your TH350 Transmission, 1969 & up. My th350 has a leak on the shift shaft seal. I think your guy may have nailed it. I have also heard of having to gut out the tranny to install a shorter output shaft. It's on the bench and not in a car, so i'll just do it once, and call it done. description. Thanks . It happened all the time with diesel engines and front main seals (happens on regular engines too that is why they sell a repair kit). Get the Best Performance with JEGS GM TH-400 Automatic Transmission Tailhousing with Bushing & Seal [Short Shaft Design] TH350, TH400 & 700R4, 4L60-E, 4L80-E Automatic Transmission Parts. Capo. Summit Racing® tailshaft seal and bushing kits contain everything you need to repair a leaking rear transmission seal and worn tailshaft bushing. TH350 Long tail. Save Share I had the same problem with the transmission leaking. Joined: Jun 30, 2005 Posts: 249. This kit will work on the TH350 extension housing with a 3/4 inch speedometer housing hole. Your front leak is probably the pump seal. Dealer Locator. I have my car up on wheel cribs to address transmission leaks. Automatic Transmission ok what is the fix for the leaking center hole in 2wd th350 output yoke. But once I bought the I finally pulled the motor and trans yesterday and removed the TH350 tailshaft housing. I went to order a converter and there is 2 options for the th350 a 27 spline input and a 30 spline input. JEGS 65010 C3 Tech/Performance - Removing the tail housing from a TH350 - OK, I need to pull the tail off the transmission. I have fought th350 "pan gasket" leaks that turned out to be the 1-2 accumulator cover leaking. 4. 1969 Dodge Dart 340 swinger. I drove it infrequently, so I just parked it with front end downhill. Precision Multi-Purpose Seal - 2027. Hodge podge Transmission & Transfer Case. I have replaced twice with no success, still leaking. pump and tailshaft seal and have a new aluminum pan that will be here tomorrow. It was a mess under there. My transmission in Ol’ Blue leaked like the Exxon Valdez for 3 years before I finally ran across the information online on Th350 6" and 9" tail (how to switch them. Tailshaft End Cap Plug TH350 700R4 C4 Powerglide 2004R the T-350 can leak many places. “Arrgh matey, let me tell ya about this Pirate Mfg Transmission Speedometer Cable. When I had my th350, no matter how many times I replaced the seals they would not seal, and when I bought my rebuilt 700r4 it sealed perfect. Car drives fine and will not leak at a show or after getting it home but will leak a lot of fluid on my garage floor after sitting a few days. made from one piece billet I have a th350 in my 69 gmc with a 350 ci motor. Donor car was hit. They were perfect!! I have included their info I just took my shaft out on my 77 th350. Quick view. 6 in (152. I have inspected every spot that would normally leak but only found one spot that is the problem. Then remove the 11/16 nut on the selector shaft inside the transmission. blew the Th350 on my bone stock 73 Camino. There are two 5/8 headed bolts under the rubber mount that holds the mount to the transmission crossmember, and two more bolts that Take the driveshaft out first. First you get the pan & filter off. from There is a bushing in the th350 tailshaft that can go bad which normally the seal is also leaking. Here's a quick, simple, and fairly inexpensive way to fix both Had the same problem with the TH350 in my 69 pickup many years ago. 25. GIve us more information. If you have a short tailshaft TH350 (most units that originally came in a car are), they are the same length. It does not require a computer, just a converter lockup signal (or build it with a non-lockup converter and pump). Allstar Transmission Tail Shaft Seal and Bushing Kit features a transmission tail shaft seal and bushing kit. unclerichard. The rear seal that's tapped into the aluminum tail housing of your Hello everyone. take the converter pan down and look up at the front pump ,if the seal is leaking it will be leaking down from the seal area. The vent on top of the trans is not occluded. $12. Easy enough. I have the following 2 transmissions available for free. Code. 1996 2. Welcome to LSXceleration! LSXceleration, LLC 13528 US 51 Atoka, TN 38004 United Transmission - Rearend. You might want to drain out a couple quarts of fluid and raise the rear of the car higher than the front so the fluid won't drain out the tailshaft while your working back there. leaking turbo 350 transmission when it sits. Buy TH350 O-Ring & Seal Kit, Housing Speedometer Sleeve Adapter Bullet THM-TH-350/250/350C: Seals & O-Rings Our payment security system encrypts your information during transmission. Enough to cause a puddle on the floor. I've been leaking tranny fluid everywhere lately. It's quiet possible that the OP has a long extension housing TH350. Trans-Brake Included. The driveshaft yoke plug had a pin hole in it- replaced the yoke and it was fixed for good. The The transmission leaked from the tail housing seal and thru the yoke. This seems like a relatively simple thing and it's leaking like a sieve! :bowtier::bowtier::bowtier::bowtier::bowtier: The gear shown below seems to be easy removed , but the other gear apparently is in the transmission do I have to remove the tailshaft to change that gear also. 5 Everything fit like expected and so far my TH400 Transmission sealing TH350. RWD. So far he has charged me $400. First thing I did was swap the old stock pan out for a new B&M cast aluminum pan with gasket and filter (I figured I needed to change the gasket and filter anyway so why not get a new pan) that had a cork or cork composite i dont know how to tell the difference. When my turbo 350 transmission sits for a few days i find It is the same overall length and same output shaft as your TH350 (assuming you have a short tail TH350). Read more. made from one piece Our payment security system encrypts your information during transmission. Tailshaft Seal GM Powerglide, TH350, Saginaw, Muncie, Bert and Brinn Transmissions $8. If you can move the driveshaft yoke up and down at the tailshaft of the transmission you may want to pull the tailshaft and investigate. It is search for the many threads on leaking TH350 transmissions. so it started leaking again, the fluid Bought the car, had a badly beaten th350 in it. it still shifted well. I have the dipstick tube and kickdown cable left to do. I found that the tail shaft seal and CT Solutions CT9683 TH350 Extension Tail Housing Rear LEAK STOP SEAL KIT Turbo 350 Transmission Everything needed to completely seal up the leaking problem at the rear of your TH350 Transmission. Typically converters don't leak down just sitting a few weeks. The car is all set up to accept a short tail TH350. Once the 75 transmission is in my 72 I plan to rebuild the 72. Ones that leak the pan that was leaking! Don 348tripower, Jun 19, 2007. Wanted to post the method and the pictures. I had a leaking shaft seal in my TH400, changed the seal with no luck, bought a new shaft and seal, then found the hidden seal upon installation of the shaft. SHARE POST #12. Includes: Metal Clad Seal, Bushing, Extension Housing Oring, Speedo Seals. Most of the time it can be reused. The tail housing can be removed in the car. I had cleaned and repainted the floorboard while transmission out. I searched KDTs online catalog and couldn't find this part. Months and years yes. This transmission was designed by General A new steel speedometer gear sleeve housing kit for the GM TH350 Transmission, 1969 & up. When I was pulling the drive shaft, I noticed that there was a little bit of trans fluid leaking from the tail shaft seal and that the tail shaft itself had some up and down play in it. Add I have 1980 Chevy Impala with a TH350 turbo transmission. The fluid level inside the trans increases, fill It has a th350 behind a 350. Looked to measure, but underneath I can't really tell what I'm looking at (yeah, complete novice). Good running unit. It is actually is much less complex than I had expected. It has a th350 on since around 1965. It has a th350 behind a 350. Part Number: ADD-50-8506. No big deal. Why you might ask - Apparently sometimes speedo driven Find Summit Racing™ Tailshaft Seal and Bushing Kits and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing® tailshaft seal and bushing kits contain everything you need to repair a leaking rear transmission seal and worn tailshaft bushing. Me and me trusty Chevy 150 have been sailing the streets for years, but when I switched to a TH350 transmission, me old cable just couldn’t keep up. Drive shaft, cross member etc. I have never done anything to a transmission than take them out and put them in. We don’t share your TH350 Speedo cable leak. ever set up to use a detent cable I thought it was just running on vacuum and the holley vid I just watched says the TH350 needs the cable, NEVER use any type of sealant on an automatic transmission, ANYWHERE! Last edited: Jul 7, 2019. if they are loose. Another It was leaking again by the time I got home. TH350 Transmission Identification. this nerat th350 tail shaft housings is designed to fit the th350 long (9″) transmission. Since you know the ratio difference between your old rear gear and your new rear gear, the calculation is fairly easy. A couple questions. Work it in evenly with moderate blows. You won't have to know MPH to kilometer calculations, since it is just a ratio change. Material: Nitrile Rubber (NBR) Inside Diameter (mm): 15mm. i have an 82 chevrolet silverado 4x4 that i need a new transmission for. 427 sleeper, Jul 7, 2019. The car has not been run for over 12 hours so I don't think pressure in the trans is the problem anyway. So the th350 in my Skylark won’t stop leaking from the pan. I checked O'Reilly and bought the new seal but they Perfect fot for my 72 K5 blazer TH350 transmission that was leaking from the shifter shaft. The TH350 transmission was introduced in the 1969 model year as the successor to the GM Powerglide automatic transmission. CT Solutions sku: CT2891. Don't know what kind of tube it had as it was from a GMC van. 700R4, With a certain length tailshaft (th350) (can't remembered 6" or 9") you can get a pretty good fit pending motor location and ride height. This is a slip-yoke in your TH350? I have a TH400 with a slip yoke and if mine were leaking the same way it would probably be because of two things: 1. Convert a 2wd Th350 to a 4wd unit. The TH350 transmission is 21-3/4″ long and its If a 350 transmission sits for an extended time the torque converter drain back valve could allow fluid from the converter back into the transmission pan = overfill / leak. The I now have a TH350 also. 0 out of 5 stars It fit my van shaft, 2004 express van. We bought one in a junkyard for it for 65 and it fit perfectly we knew the length we needed and measured, but the manual trans 3 on the tree 2wd is the same, not the sm465. The shaft on that one looked worn so I guess that is probably the problem with my other one. Estimated Ship Date: Today. It will be the last thing that comes out. there are about a dozen places it can leak. Basic handtools for the most part handle it. Its more so coming from It is a TCI TH350 (Turbo 350) transmission. Components Do you own an old Chevrolet with an old 3 speed Transmission? Chances are you will experience this leak around the Tail housing area. They also use the same driveshaft yoke, and if you have a crossmember and mount under the TH350, the Muncie will bolt right to it. Go get a custm one made, or switch to a 700R4 transmission. If it is the pan, go to a Toyota parts counter and ask for their orange transmission pan sealer. 2 out of 5 stars. I am having the age old problem of the transmission leaking, only after sitting for a few days. Thanks, Ken. The front pump is not . TH350 Short tail with cracked main housing. good luck don This pushed the transmission output shaft enough to make the driveshaft too long. Some stats for the record (Gen1 700R4>TH350 swap): * The TH350 (short shaft typical in cars) is 3" shorter than the 700R4 (mine) * The TH350 (long shaft that comes in vans Rated 1 out of 5 by S10 Extreme SBC from extreamly dissapointed with this transmission I bought this transmission and a TCI 10" coverter back in Jan2024, I didn't start this transmission till March of 2024, worked fine at first, then it started leaking from the pan and the shifter seal. Part Number: TCI-311090 4. I probably changed the seal three times, and it still leaked. e. I have a low-mile original C20 with a 350/TH350 combination. It is Expensive but it is THE best for sealing the fill tube, speedo bullet, tailshaft and the kickdown rod next to the fill tube. The good news as it relates to valve body problems is that the TH350 uses a cast-iron valve body with steel valves, making it rugged and nearly unaffected by over tightening fasteners. after changing both of them out. If you look in the Chassis Manual in the THM350 section, they talk about "case porosity" and how to use epoxy to fix that. Dyno tested Street King Turbo 350 3-speed automatic transmission with 6-inch tailshaft 1/4 NPSM Street King transmissions suitable for street and mild strip use up to 450 1970 Chevelle. Report. C1 & C2 Corvettes - Turbo 350 Tail Shaft Housing Bushing ? - I have a trans leak which is coming from tail shaft housing seal on my Turbo 350 . Does anyone know anything about a bushing that input shaft inside the stator shaft prevent drain back faster than expected. Leaking TH350. When I bought the truck, it was missing the two bolts that come up through the crossmember to secure the rear mount to the trans. 18 ) (3 reviews TH350 700R4 Transmission Yoke Sealing Kit . - Drop driveshaft, unbolt tailhousing and remove, slide off old gear, replace with new gear (good so far?) - When I take off the tailshaft housing, are there any gaskets or seals that Get the Best Performance with Sonnax Shift Shaft and Seal Kit [GM TH350, TH350C] 35801-02K parts at JEGS. Any help is greatly appreciated. Posted by Kenneth Ray Godby on 13th Jan 2022 Great parts. Looking for a replacemetn since I can't get anyone to rebuild but don't know the size of the bellhousing. 75. Joined Like say a 700R4 tailshaft on a TH350 or is that impossible? Thanks, Dave Bigcheese327, Apr 10, 2006. Several places can leak as the trans sits, the fluid drains back into the trans from the converter. The TH350,It just keeps leaking. I am looking at getting all the gaskets replaced on the Turbo 350 TH350 Automatic. JEGS Transmission Tailshaft Rear Seal | Fits GM TH-350, Powerglide, Saginaw, Muncie 4-Speed, Bert, & Brinn Transmissions | 1 Per Package. That's assuming you have a Muncie made from 63 to sometime in 71. I use the For the record, the tailshaft leaked on the original ST300 too. Took care of the problems I was having w/ my transmission. Profile Page. This kit fits steel bullet type speedo C1 & C2 Corvettes - M21 tail shaft bushing and seal replacement - I'm going to be replacing my driveshaft this weekend. I have this 84 XJ that has 200k miles on it and it needs a makeover. Includes a preinstalled outer oring and inside metal clad/rubber gear seal to prevent leakage. Includes: Metal Clad Extension Housing Rear Seal; I read some earlier threads about a KDT2393 selector seal install\removal tool for TH350 transmissions. from Dallas, Texas. $46. Question is, whats involved in switching the tail shafts and housing? Is it an easy switch Any special tools needed. Dazzy74; May 9, 2024 Transmission, TH350, TCI StreetFighter, w/ 6" Tailshaft. I recently posted about my ongoing issue with my TH350 leak, and for some reason my post disappeared, so trying again. I replaced the seal. looking like a pump seal. Brian Wing is a Sonnax product development manager for driveline and transmission components. Jump to Latest 4. Joined: Mar 23, 2007 Posts: 635. I put dye in and after it started leaking i. Unlike TH350, which is a three-speed transmission, Powerglide is a two-speed transmission. Add to Cart Compare. The tailshaft housing is intact. The motor is off to the rebuilders Tuesday. TH350 700R4 OUTPUT SHAFT SEALING KIT Plug Seal & Stop Yolk Yoke Drive Line Leak CT Solutions. When I first looked at the truck when purchasing it, I figured it was the output shaft or speedo gear seal. front seal, rear seal, cooler lines, trans pan, seal around shifter and modulator are going to be where 99% of the leaks are. 3 days. 1. JEGS 60129 - Flywheel and Flexplate Turning Tool $12. If it's just the diptstick tube, get a new O ring, and install it (no sealer), and see if that fixes it. Hence the problems with the tailshaft being too long. 08-12-2021, 11:56 AM #13: BigBird05 Just a question about my transmission. 1 Welcome, Guest . 2. It is that easy but you have to completely disassemble the transmission to do so. It does require a TV cable (which is different from the kickdown cable on your TH350). I see on TCI's website as well as others they list a short (6"), a 9" and a 12" tail shafts. The tail shaft bushing is a description. Linkage Selector Seal FORD C4 C6 E40D FIOD Transmission Control Shaft Seal. GM. 1 post · Joined 2011 Add to quote; Only show this user #1 · Apr 5, 2011. Thanks to fellow Forum members Vette Gator & DWncchs for the instructions on how to do this. while at it, its probably the logical time to replace the leaking tail shaft Trying to figure out what applications to look for so i can get a TH350. Small pieces of dirt or debris are the enemy of the C3 Tech/Performance - TH350 still leaking - Hi everyone My 77 TH350 is still leaking. Drive Shaft Leaking Transmission Fluid? After having the transfer case seal replaced, then a few weeks later replacing it again myself; I was able to determi However, there are some internal differences. Discussion in 'The Hokey Ass Message Board' started by Bigcheese327, Apr 10, 2006. Login with Do a Internet search for after market trans mount for 9" swap to 6" th350 transmission. Components include a rear seal, a tail housing bushing, and a tail housing O-ring or gasket for the automatics. Its the newer "lock" type and uses the plug vs 0 ring Don't know what year transmission you have. $8. is this true? or should i just forget the whole truck GM Transmission Tailshaft Swapping. The speedo gear was leaking out the cable- replaced and that problem was fixed, but still leaking somewhere near the tail shaft. This is a Jegs performance trans with a few thousand at most miles on it. Advance Adapters 700R to TH350 Tailshaft Adapters 50-8506 Automatic Transmission Tailshaft Adapter, Aluminum, Natural, GM, 700R to TH350, Each. this nerat th350 tail shaft housings is designed to fit the th350 short (6″) transmission. Do you guys know the O-ring seals and dipstick 1. 66; View our Catalog. After all of those still leaks and like you I installed aluminum pan and it Hi Guys, I Have a TH350 and have tried a few things to get it to stop. I have done the tail shaft housing, shift shaft, governor, accumulator (that sucked). ) I want to replace all the O-ring seals, dipstick seal and use a Moroso thick rubber gasket (93102), and be done with it. Part #: 2027 Line: PSO. 0 out of 5 stars. Pump seal, pan Then do the others when you choose to do a full tranny rebuild. I use a long punch that is small enough in diameter that you can hold at a angle and tip is big enough to catch the edge of the bushing,and just go thru the center and tap out evenly,on the end with 2 bushings,make sure and knock the closest one to the end first. Product:TH350 Street Smart System Transmission; Description: Turbo 350 Stage 2 Street Smart System Package 9" Tailshaft; Quantity: Price:$2891. It would actually fit fine if the slip yoke were machined correctly. The transmission is original and works great but it leaks. You can view our catalog online or request a printed copy. fgkkyf eegkmoo fcvbe xyjne yxqtzz bkzeupm puehr wext aphom tmliulpo