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BR3W CITY · 01-02-2012, 02:33 PM

the 4l80e is going to give you the same level of strength, with the bonus of overdrive and computer control (and if you'r running an ls, its almost easier just to run the o/d trans).

4l80e
1 2 3 4 R
2.48 1.48 1.00 0.75 2.07

thm400
First Gear - 2.48 to 1.00
Second Gear - 1.48 to 1.00
Third Gear - 1.00 to 1.00
Reverse - 2.07 to 1.00

essentially the same gearing.
you can run a higher rear gear to pep it up, and let the o/d keep the rev's down on the highway.

with 3:23 rear end you would be smooth as a caddy on the freeway with a 4l80e

what rear end are you running? The 3;23 was much less common in truck.

01-02-2012, 02:33 PM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: what tranny should i go with for turbo ls build the 4l80e is going to give you the same level of strength, with the bonus of overdrive and computer control (and if you'r running an ls, its almost easier just to run the o/d trans). 4l80e 1 2 3 4 R 2.48 1.48 1.00 0.75 2.07 thm400 First Gear - 2.48 to 1.00 Second Gear - 1.48 to 1.00 Third Gear - 1.00 to 1.00 Reverse - 2.07 to 1.00 essentially the same gearing. you can run a higher rear gear to pep it up, and let the o/d keep the rev's down on the highway. with 3:23 rear end you would be smooth as a caddy on the freeway with a 4l80e what rear end are you running? The 3;23 was much less common in truck. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD