[tormenting5.0]

Hey guys,
My friend just got a 90 gt auto, his car is just like mine. the guy he got the car from didn't really know if anything was done to it as far as mods. Now i have 3.55 rear and @ 2000rpms i'm at about 65-67 mph. my friend is at 60-63mph @ 2000rpms which would come out to be 3.73. Is this right, or should we jack up the car and spin the driveshaft? he has 245/45/17 on all four, the trans is a aod w/shiftkit. other then that everything looks stock. thanks for any info.

[Snake Pliskin]

4.10, accept no substitute on an AOD car. 3.73 works best on sticks

[tormenting5.0]

I wasn't asking what gear to use, i was asking if my math is right he should have 3.73 rear gears.

[systronic]

too many variables involved. just gut under there and spin that sucker.