Was able to get my car on the lift, counted the rotations need help (gearing)

[cfiiman]

A few of you told me to count the rotations that the driveshaft made while turning my wheel 1 full revolution so I was able to get it on the lift today and do that. As some might remember from my original thread my speedo is off pretty good. Anyway the driveshaft turned 3 and 3/4 of a turn for one full rotation of the rear wheel, does that mean 3:73's? If so I need to order the recalibration kit, thanks for any help!

 

[eucharistos]

sounds like 3:73's to me, looks like you are a gen1 with stock height tires

if you are running taller tire setup the math changes

an exper will chime in soon

congrats on the gears

 

[cfiiman]

Thanks, honestly I never cared about gears, guess I just inherited them, but I read it is a nice upgrade...I just want to get my speedo calibrated right is all. I have stock tires I'm pretty sure, the backs are 335/35/17 and the fronts are 275/40/17 are those stock? I'm pretty sure the front is b/c it is an original tire (no worries I have new ones on the way) and the rears are new Michelin PS2's.

 

[plumcrazy]

sounds like 373's

what kind of RPM do you turn at 65mph in 6th gear ? that will help confirm above too

 

[cfiiman]

Plum,

1400rpms in 6th at 75mph indicated which is probably somewhere around 63 or 64 actual mph according to gps, hope this helps...

 

[AZTVR]

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