carbon fiber coupe

iTrader: (2)

I have a gearing question

I have a stock gear set gsr trans

right now on a normal pass (19psi 9200 redline) I am shifting from 3 to 4 at about the 1100ft mark.

what can i change to stay 1-3 for the whole pass? sorry not to big on trannys and gear and what not.

Turbo-LS

iTrader: (4)

Longer final drive or more power or shorter gearing all together so you get through to the top of 4th gear

tepid1

Tire size plays a large role. Some more info is needed.

Ron Burgandy

iTrader: (1)

You want to stay in 3rd?

carbon fiber coupe

iTrader: (2)

405 whp
24.5/9/13 slick

im shifting so close to the end it seems like its "slowing me down" by shifting then passing through the traps

i have 2 tunes on the car a pump gas and c16 tune i havent ran it on the c16 tune yet to see how it goes

MR.johnson

shorter tire, longer fd, turn the boost up Are all options.

choadsi

1/8 mile? stock gsr on 24.5 you should ride all of 4th out unless you have a FD under a 4.0. I would think you have a ls gear stack with a 4.0 FD but even then you should bang 4th sooner than that. I don't know much about trans but you don't want to use 1-3 for the 1/4 mile because around 1000ft mark is chute popping area and you're still banging gears

Aquafina

iTrader: (3)

You don't want a 3 spd setup. You should cross the line at the top of 4th. Run the B16 3/4. 4.26 FD if needed.

hardcore97

doesnt sound like a gsr trans to me. my setup on a gsr trans and 24" tire puts me shifting into 3rd around 112 mph and thats revving to 9500. at 400 whp you should be trapping in the 120's so i wouldnt think you would be shifting to 3rd that close to the end of the track if you are only around 110 mph

carbon fiber coupe

iTrader: (2)

previous owner told me it was a GSR....

my best pass to date is 121mph.....
obviously without taking it out i would have no way to know for sure what the stack is,

DA-NINE

cruise around and do a log of cruising rpm in each gear. with that you can compare the vss reading and engine rpm to accurately determine your gear ratios.