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I have two mustangs right now, a 65 6 cyl and a 66 8cyl. on the 66, I went from 2.80 gears to 3.80 gears, and the speedometer is off positively by about 15-20mph. The 65 I just got, and i'm not sure why its off - but it is slow by about 15mph. Anyways, they both have 16tooth gears. What do you guys reccomend for each? I know I wont be able to get it exact, but I have to be able to get it better than this. I had heard that they make a 21tooth gear. SHould I use that in my 66? What should I use in my 65?
Chris
Chris