[whitels1]

Originally Posted by COS399

Thanks for the video. I bought a 86 k20 with a 5.3 already installed a few months back. The guy left the TH400 and I was thinking that maybe if I found a 4L80E for the right price I might swap it out. It still has the 4.10 gears and could use an overdrive gear when I am running it down the interstate.

Thanks for watching! An 80 would be a good idea, how does the truck run?