what gears does my 99 trans am have?
#1
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Join Date: May 2005
Location: arkansas
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what gears does my 99 trans am have?
I have a factory rear end in my 99 Trans Am. it is an a4. what rear gears do i have? are they the 2:73's or 3:23's? thanks
josh
josh
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thanks guys. i couldn't find the rpo codes on the drivers side door. becasue i don't have the factory DS door. it got dmaged in a wreck. so i'll juts look at my rpm's and see. i'm thinking i have 3:23's though. and if i do how much will it help changing to 3:73's? thanks
josh
josh
#5
TECH Senior Member
Good point, double check against a gear/RPM calculator like www.f-body.org/gears/ to be sure. My car says GU2 on the door, but has a "factory" 3.42 rear in it from an M6 car.
#6
3.73's would help but not near as much as a stall. If you do have 3.23's then I'd definately go for the stall first. I'd actually go for the stall first even if I had 2.73's. The gears will help but not as much as a stall in an auto.