Chevy TH350/TH400 Common Transmission Leak Fix (and Fix the Speedometer Too!)
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Episode 97 of Bad Hombre Garage: my car has been leaking transmission fluid pretty bad, and the speedometer isn't very accurate. Here's a quick, simple, and fairly inexpensive way to fix both problems.
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Пікірлер: 60
There is also the shift shaft seal that’s notorious for leaking. Now you need to add Power Steering. Nice Nova 👍
@BadHombreGarage
5 ай бұрын
Good call! I will be doing a video soon on that fix.
Alright Joe, double fix, and simple too, motor sounds good, looks like you are having nice summer weather
@BadHombreGarage
3 жыл бұрын
Thanks Mike. Yep, the weather has been warm but it’s now cool and rainy this weekend.
@DesertRatFabrication
3 жыл бұрын
You have probably heard the Seattle weather is going to break a record for heat 🤒
I have a TH350 in my 70 Monte Carlo that's leaking good tips to check , typically after driving the car, I will notice a pool of transmission fluid, and I had to top off my trans fluid
@BadHombreGarage
3 ай бұрын
It could be many things… I’d check the speedometer cable output, the gasket around the pan, the shifter shaft, and the dipstick tube.
@4everDCOOL1
3 ай бұрын
@@BadHombreGarage i just had dakota digital gauges installed and the mechanic installed a BIM unit for speedo and gear shift, imma try the simplest thing 1st pan gasket/filter and new pan..summit had a complete kit ..54 year old car, i can't hurt
Just what I needed, subscribed!
@BadHombreGarage
2 жыл бұрын
Perfect! I’m glad you can use the video.
Great video Joe..
@BadHombreGarage
3 жыл бұрын
Thanks, trying to put out a few more.
Yeah man thank you. My 1982 Camaro is doing exactly this too. Leaks from what looked like the cable. I am going to do the inner ring and then the rear seal too.
@BadHombreGarage
Жыл бұрын
Great! I hope this works for you.
Great video Joe. I need to replace my bullet too.
@BadHombreGarage
3 жыл бұрын
It was pretty easy to do.
Great stuff sir!!!!
@BadHombreGarage
3 жыл бұрын
Thanks for watching!
It helps to know vehicle history when finding an external correction box on the speedo drive. I had to get one made years back on an 'as-is' purchase: axle tube code suggested 3.31, but it was really a 3.70 as received. My speedometer excited a few passengers before fixing, but the car wasn't nearly that fast. If you can figure out the correction, that tells you what was behind it before.
@BadHombreGarage
Жыл бұрын
Yes, either that or a lot of trial and error. Thanks for watching!
We have built several hot rods over the years. Put in a 400, 350, 327, 283 currently have a 6.0 working on also.. Had several th350's one already in a car used and another rebuilt.. have a 350 turbo that was rebuilt setting around, used it..seems like every single time we build an engine the trans ALWAYS leaks, or develops a leak.. i have always checked everything no matter what, rebuilt or a used trans.. changed all seals on the sides, everything even put on a $35 re usable moroso pan gasket and new aftermarket pan, checked everywhere.. and every time there are always leaks.. owned 2 or 3 camaros built 4 or 5 motors and every single time the trans leaks no matter what is done to it.. i've had them leak at the tailshaft, on the sides, dripping off the pan, around the shift shaft, i've fixed issues only to have another area come back...im talking some bad leaks, i have resolved them only to realize there is ALWAYS a minor leak somewhere..also my dad has messed with 350 turbos for 40 years.. the only transmissions I've had that didnt leak were 4l60's that were already in an f body from the factory.. i dont get it..thinking about spending a grand or so on a monster transmission next time i put an engine together.. strong transmissions but having a hard time understanding how people get these 350 turbos from swap meets for a few hundred throw them in a hot rod, go to the track or car shows in a 5 or 6 hundred hp car and never have them leak ever on the track or anything..i've had nothing but leaking issues with them amd thats with me being pretty thorough taking my time and just driving on the street some.. maybe its the fact these transmissions in circulation that were in street cars originally are 40+ years old?? they phased out 3 speed 350 turbos in the early 80's.. nothing but issues for me with leaks... ofcourse this stuff is stuff thats happened over the last 15 or 20 years..a shop even put a new case in one.. i dont get it.. kinda ruins the whole hot rodding thing for me. These transmissions are everywhere but has anyone else been through the wringer with leaks? Is everyone using an aftermarket racing transmission like monster? I used to think they leaked a little when i was a teenager and had one 15 yrars ago because i didnt spend the extra money on them like everyone else does, going the extra mile buying the best most expensive gaskets, pans, and dipsticks but now i do all that.. and they STILL leak 😡 smh..
@BadHombreGarage
2 жыл бұрын
Yeah... it seems like I've had a lot of them leak. If anyone has any ideas on how to keep them from leaking please comment below!!
Great information thanks
@BadHombreGarage
2 жыл бұрын
Awesome, thanks for watching!
Good trick. I will remember that if mine leaks. Thanks.
@BadHombreGarage
3 жыл бұрын
Right on, that’s why we do this, right?
Cool car.
@BadHombreGarage
3 жыл бұрын
Thanks!
One Bad Hombre ! Thanks Good Stuff.
@BadHombreGarage
4 ай бұрын
Thanks for watching and for taking the time to comment!
thanks^for that great vido i have the same problem
@BadHombreGarage
2 жыл бұрын
Thanks for watching!
Killer!!
@BadHombreGarage
2 жыл бұрын
Thanks!
My 46 Ford has a 350/350 combo and drips a little.....I'll get her on the lift and check. Thanks
@BadHombreGarage
Жыл бұрын
Good luck!
Great
@BadHombreGarage
11 ай бұрын
Thanks for watching!
Where do you get the bullet shaped piece at for a 350 turbo?
@BadHombreGarage
2 жыл бұрын
I’ll post a link like the one I got off Amazon. I got one with the different gears so I could get my speedometer calibrated while I was at it: GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET 18 19 20 21 22 TEETH SPEEDO W/BULLET www.amazon.com/dp/B0845MYL6W/ref=cm_sw_r_cp_api_glt_fabc_7XQZW4JG6FBTXSNVGX7M
What Vendor has Speedo Gears?
@BadHombreGarage
10 ай бұрын
I got them on eBay from a seller named greaterdimensionsengineering
Is there supposed to be oring where it screws in?
@BadHombreGarage
Жыл бұрын
There is an o-ring that goes around the bullet, but not one on the screw.
@in_the_building1
Жыл бұрын
Thank you!!!
Great video, but now how is your car gonna mark it's territory. 😃😃
@BadHombreGarage
3 жыл бұрын
Haha! It’ll still find a way.
@nikomartinez1578
2 жыл бұрын
By leaving rubber behind
My friend where do I get that bullet transmission sensor???
@BadHombreGarage
Жыл бұрын
I have no idea, this one came with the used transmission I bought at a swap meet.
@jaytheslayer7703
Жыл бұрын
I found it Señor Malo they sell those on Amazon by like 19 bucks
@jaytheslayer7703
Жыл бұрын
Thank you Anyway my friend
@BadHombreGarage
Жыл бұрын
@@jaytheslayer7703 nice!!
Someone who knows what they are doing
@BadHombreGarage
2 жыл бұрын
As they say, even a blind squirrel finds a nut every once in a while.
@isaiahirish6501
2 жыл бұрын
@@BadHombreGarage lol and a broken clock bound to be right at least twice a day
Need a gear with 2 more teeth
@BadHombreGarage
2 жыл бұрын
Got it sorted out- brown gear turned out to be perfect.
Mine does not have the bullet deal or the teeth when i pulled it out any idea?
@BadHombreGarage
Ай бұрын
Sounds like someone probably removed it in a prior iteration of rebuilding that transmission.