Hi there, My 59 Biscayne has the 3 armed suspension set up from factory with the factory axle etc, thinking it's 3.5-ish gears (I did code it once, don't recall exactly but thinking 3.5-ish)
Car is 1 235/3spd and I'm dropping in a 409 in the near future, targeting 375-400 hp. I could just...