aftermarket speedo
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Joined: Jul 1999
Posts: 4,384
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From: Tulsa, OK
I don't think there are any "application specific" aftermarket speedometers made to fit into your car. But many aftermarket gauge manufacturers do make speedometers that can be adapted to your car.
You can find out your gear ratio by:
1) Looking up your RPO code (assuming the rear is original to the car)
2) Look up the axle code stamped on the front of the axle tube on the passenger side (assuming the gears are original to the rear end)
3) Jack up the car and spin the wheel (once for posi and twice for std) and count the revolutions of the driveshaft.
4) Take off the differential cover, and count the teeth on the ring gear and divide by the number of teeth on the pinion gear. This is the most accurate way, but obviously takes the most work to do.
You can find out your gear ratio by:
1) Looking up your RPO code (assuming the rear is original to the car)
2) Look up the axle code stamped on the front of the axle tube on the passenger side (assuming the gears are original to the rear end)
3) Jack up the car and spin the wheel (once for posi and twice for std) and count the revolutions of the driveshaft.
4) Take off the differential cover, and count the teeth on the ring gear and divide by the number of teeth on the pinion gear. This is the most accurate way, but obviously takes the most work to do.
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