Quote: I'm running a 28" tall tire with 4.10 gears behind an A500 overdrive trans. Runs a tick under 2500 RPM at 70. OD was one of the best modifications I made to my car.
That's interesting.....I'm gong to be running a 2 wire 518 behind a 440 with 4:10's and 30" to 31" tire in a RC. I was wondering where my tach was going to fall at 70. Oh.....mine will be higher I guess cause I don't have a lock up.
I've ran 3.55's behind my OD 833 in my swb probably 6 to 7 years....which it ran around 2100 rpm at 70. I've also had 2.76's in the same truck twice an now it runs around 1700 at 70. I think the next gears I'm going to try will be 3.23's, because I have them to try.
I know in my 64 valiant I had 2.76 behind a regular 833 with a low first gear and it would run around 2100 rpm at 70. I can't remember what size tire I was running back then.
