[DainBramaged]

I am restoring an 86 chevy k10 4x4. I purchased a new crate motor and had the original 700r4 rebuilt. After less than 500 miles the transmission seal where the torque converter connects blew out and it started pouring out tranny fluid. I took it back to the place where I purchased the rebuilt transmission and he replaced the fly-wheel, torque converter, pump, and seals. On the way home the f'ing truck started leaking Engine Oil from what appeared to be the same area. Can someone provide some insight into my headache?

[302 Z28]

Kind of curious why he replaced the flywheel. Who's crate motor is it, what year?

Vince

[joe350s10]

Sounds like someone didn't install something right to me.

if he replaced the flywheel, there is a good chance it was warped. I have seen them be warped right out of the box. Probably wasn't his fault...although he should have checked it first.

what size torque converter did he install? Is it a stock converter or does it have a stall?

Did the truck have a wierd vibration/noise prior to the initial failure?

I would have someone else make sure that the engine and tranny are properly aligned and that you have the right flywheel for your TC. sounds like somehting is either mis-matched or not properly installed.

Which probably lead to the rear main seal failing.

[airworld2]

I have never had transmission trouble cause any rear main engine seal leak!
even if your flywheel was bent ,cracked or warped(all can cause front tranny seal and bushing trouble ) but this can only be trouble in rear main or crankshaft . but I could be off

[Ozz1967]

I had a tranny leak problem in my 700R4 that was nothing more than the pump. Not sure why your man replaced everything. With everything that went wrong, he defintely put something in wrong. Not sure, but maybe he damaged the rear main when he put it in?