Quote from Heavyride on April 12, 2022, 7:08 am

The trucks with a 5-spd would have the 6.666 ratio, because the overdrive would let them get the max speed, so they had the higher numeric axles to have better acceleration when loaded. The 4-spd would have the 6.285 ratio.

Quote from Pintosh on April 12, 2022, 1:04 pm

More aggressive gearing does create a quicker car but not a faster car. A gearing change will certainly have a noticeable affect on your car. If you swap in taller rear gears, you can gain some top-end speed, making your car faster, but you're going to get a bit slower leaving from a stop.