thanks guys

 

I forgot you got a six speed, I think the forth gear is just short of 1-1 and fifth is overdrivin already, so you would want to top out in forth then. You dont want to be in an overdrivin gear in a drag race..

 

yup so what gears do u think i should go with

 

got some 3:73s going in ...also rematch set for 2012

 

wow this runs real quick. seeing a thread your thinking about going turbo not sure but check out some 6-speed guys and what their drags are like with 3.73's. since you have them id say use those but id say sneaking some 4.10's in there would be nice. probably be in the higher rpm in 4th gear if i had to guess.

used f-body.org/gears, randomly plugged in some gear ratio's i found for a 6l90e(found a thread that listed them on gm-trucks so may not be official ratio's per gear), figured you shift at 6500 for example, 4.10's maxed 4th gear on 28 inch tire is 115mph, 3.73's is 126mph (112mph @ 5800rpm)

 

I'd say 4:10's would be perfect especially if your turning more than 6500rpm! But 3:73 aren't bad either! Post up your shift point RPM and I could post you speed at the end of each gear!
Ex:

 

man i want your truck

 

thanks guys i still havent done the gear swap

tire height is 29
shift points at 7300 (may go back down to 6800

 

holy hell you got that thing wounded up!