whitt1

Made a costly trip to the track took out transmission and rearend at the same time.Any suggestions on how to make both the transmission and rearend live with 500lbs/ft of torque.I'm starting the rebuilds monday.

Hit Man X

What all did you break? I'd suppose the G80 in the rear and prolly the input shaft and drum or sun gear shell in the trans...Got any video?

Anyway... the rear end is pretty easy to beef up:
1. Eaton Positraction
2. T/A Performance Stud Girdle
3. Forged Axles (Strange, Moser, etc.)

Find my post about the 4L60E build up in the search area of this board.

Good luck?

whitt1

A better question is what did I not break?Trashed about everything both planetaries, drum,filled a Yank 3ooo with metal broken ring gear broken differential.But the axles are ok

Hit Man X

How the hell did you do that? Massive wheel hop or something?

Here is that write up:
https://ls1tech.com/threads/showflat...rue#Post268061

That should help a bunch. Good luck!

whitt1

No wheelhop to much bite from the Drag T/As,3000rpm launch and tons of supercharged horsepower.

creederado

That Sucks, Was is the first run of the day and did you have any warning?, Tranny slipping more and more or the rear not locking up?

Hit Man X

Oh hell thats why...drag radials on a stock 8.5" w/ G80! LOL. I thought it broke in 4Hi somehow.

whitt1

No warning at all a good burnout,one short hop,stage,launch bang.I'n going with every hardened internal part I can find and a Eaton posi with a TA stud kit I'm debating over a 4.10 or 3.73.

creederado

From what I remember Toms Differential came highly recommended in the past.
http;//www.tomsdifferentials.com/tomc.htm

I'm looking into upgraded my factory g80 to 4:10 and the Eaton. Especially now!
Whitt with the 26 drag radials and your stock rearend gears what is the new ratio? Would staying with 3.73 with your tires be better. I'm running 28(track) 29(street) and I think 4:10 would help.