1krr

you guys runnin quick with 4.10s, are you gettin close to getting out of 3rd? im just wondering considering you are trappin 120+. id think youd have to switch to 3.73s or so. or maybe im completely off. lemme know what ya think!

MATTREDSS

iTrader: (16)

I have 4.10s, I crossing the stripe around 6700-6900rpm in 3rd. I am using a 275/40/17 drag radial and car is shifting at 7k.

Bill00Formula

iTrader: (4)

Not sure how much slippage there is in an automatic but in a 6 speed I was able to go around 129 in 4th gear (1:1) at about 7,000 rpm using 26" tires. I have since changed to 28" tires as an alternative to changing gears since I couldn't stay in the throttle through the traps.

StealthFormula

iTrader: (35)

Check this calculator out, may be helpful to you:

http://www.ls1lt1.com/forum/gearmphcalc.php

stumprrp

iTrader: (2)

my car is at 7000 RPM @ 120-123 MPH in third with a vig 3000 and 25.66 inch street tires. that equals about 8% slip

1krr

thanks for the info guys