What gears do i have
Manual = 3.42s
Auto = 2.73s or 3.23s. Pretty sure Z Rated tire cars got 3.23s, in which case if he has a 150mph speed he's got 3.23s.
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Some Trans Ams have the 2.73s in Ls1s & LT1s.
Look in Glovebox or on the driver door for the RPO Code
GU2 for 2.73
GU5 for 3.23
Or Look at the RPMs driving.
http://www.f-body.org/gears/
2.73s 60 mph is 1500 rpm
3.23s 61 mph is 1800 rpm
My 94 had 273s with a 150 speedo so throw that out the window as stated earlier.
I went from 273s to 323s and there was a big difference. 273s suck.
But since you know your RPMs and the tire size, put them in.
http://www.f-body.org/gears/
thanks

