This will be my fourth transmission rebuild (four different vehicles) in one year.
Crusty Chevy gets a refresh.
Category: My Projects
Hmmmm. I’m Suspecting a Seal Issue.
Rebuilding a 4L60E at the school in the Mechanics class. Transmission does nothing. Took it apart. Two smoked clutch packs. It ~looks~ like the transmission was assembled faulty at some time. One improperly installed seal created a $3000 bill. Nice.
Soon…..
Oh yes, soon…..
Read More: The Lethal Locost
Fixing the Crusty Springs
Noticed the right rear of the Crusty Chevy was sitting a bit low. Good time to check out the leaf springs and also shim out a driveline vibration.
Read More: The Crusty Chevy
“Detroit” True Trac Made in Taiwan?!
That was a bit of a surprise to discover during the installation. But I guess it’s a sign of the times.
Better Fan
Because there is always room for improvement.
Read More: The Fiendish Firefly
Re-Programing an Automatic Transmission
Freshening up a TH350, and adding a home-brew shift kit on the V8 Firefly
Read More: The Fiendish Firefly
Gearing = Acceleration
And this bucket of 3.42:1 fun will get me there!
Read More: The Fiendish Firefly
Cracked
Cracked the flexplate on The Crusty Chevy. Ordered up an SFI-rated flexplate, and got it switched in 2 hours. Lucky me.
No Weeping!
That should do it.
Parked the Chevy nose-up on a hill, only to find a stream of ATF out the back, coming from the vent hole on the driveshaft yolk.
Apparently Chevy wants the driveshaft yolk splines greased, but the ATF would wash all that grease out. So they have a cup sort of thing on the tail shaft, with an o-ring to seal around the yolk. There is still an output shaft seal on the tail housing to keep ATF in. Because the yolk will move in suspension travel, and we cannot pressurize this cup thingie, a vent hole is located in the yolk end to release any pressure. This works, until the o-ring leaks.
While I had already replaced the o-ring, clearly something has gone wrong. Instead of removing the tailshaft extension again, I disassembled the driveshaft, brazed the hole closed, and reinstalled it.
Yay! No more leaks!
Should I have done that? Sure! LOTS of online suggestions, as well as even ~specific~parts~ you can buy that plug the hole.
Read More: The Crusty Chevy