Check the roller clutch for damage.

 

Thanks, I'll check that when/if I have to pull it back out. I was hoping it would fix itself, that didnt happen, just took it out, 2nd and 3rd are great, hold good, but I was rolling in 2nd about 10mph and dropped it to 1st and it was like a brake was applied, the car came to a stop. No clicking or other noise, Im wondering if somehow the band is applying in 1st?? Is that possible?

 

The problem seems to be zero intermediate clutch clearance aka I put three fibers/steels in a light duty th350 that calls for two. Checking the intermediate clearance was the one thing I couldnt find how to do on the internet so I figured it must just be end play....hahaha yeah right. Found this out after the fact http://www.crankshaftcoalition.com/wiki/T-350_rebuild_tech#Intermediate_clutch_clearance and got Ron Sessions book. 2-3-R all worked great but it beat the hell out of something, the fluid that was new last week is now very opaque gray.

 

Sounds like you had a 2 clutch int piston and assembled it with 3 clutch's.


Hutch

 

X's 2^^ If your gonna use 3 frictions and steels there, use a piston designed for a 3 clutch set up or measure the thickness of 1 friction and 1 steel and machine that amount of the piston you have. I try and run .060 clearance in this clutch pack. Also you can get a center support from a 700r-4 or 4l60e and replace the original center support( I've seen the stock 350 one crack at the roller clutch area). Its beefier and is a direct drop in replacement. good luck and let us know how it comes out.

 

Thanks, I'll keep an eye out for a center support from a 700 or 4l60 for next time I have it apart.

Turns out it definitely was the 2 clutch piston when I was using 3 clutches doh. I cut the piston down and put the three clutch pack back in and it drives great now.

 

Glad to hear ya got it fixed.