Quote Originally Posted by farmtruc View Post
Well after two years of mild abuse, the transmission is DEAD!
It lasted with about 1.5 years of 425hp to the wheels with the rearmount, and the rest of it's life with 520hp to the wheels with a front mount.

The trans started making noise last week, a high whining noise under light acceleration, well any acceleration and idle.

This week we tore it apart and found out what has failed.
The clutches are slightly burned up. They are black and lots of residue in the pan. Some of the steals between the clutches were warped too.
I can't say the gears were slipping, but there is definitely a lot of wear.

The big problem was the sprag. It's worn out and grinding itself away.

I thought this would be the last part that would go.

Anyway, I bought a salvage yard trans and I'll be installing it Sunday, then later this week I'll add a shiftkit. I've seen stock 80e's with shiftkits last a long time, so in the meantime I'll rebuild this broken one and move on.
Was this the built transmission that's listed in the 4l60e to 4l80e swap tutorial?