car is a 98 regal gs (4t65hd, 2.93 FDR stock)
recently installed a tranny that has 3.29 gears, with a 34 tooth VSS wheel instead of a 30 tooth.
im told that this wheel "fixes" shift points by tricking the pcm into thinking it has 2.93's, and that no changes have to be made it will shift just fine, however the speedometer will be off.
so what would i change to fix the speedometer, but not change shift points.
VSS pulses per
mile 23430
rev trans 9.1172
final drive ratio 1.121
trans revolutions / mile 2568.3983