Classic Tech
Hi everyone,
1966 Mustang, 289 v8 with a c4 Trans. I have an 8" open rear with 3:00 gears stock gears I believe. I'm going to do some engine modding with a top end kit and wanna change out the gears in the rear. I've heard of 3:25s and 3:55s, but would a 3:40 work? Particularly these...