I had the 3.31 with a high revving 327......it needed longer gears ( my rires are 26")
The 3.07 was better and now I run a 2.88 with a 600 hp motor, and it gives me the best of everything..I have a 4 speed Jaguar gearbox with an electronic Laycock (Heavily modded for the power....Bronze facings on the cone clutch ).with a o/d ratio of .73.... I have'nt had anyone beat me yet!!!! bikes included, and i cruise at 80mph at 2000 rpm
