Originally Posted by
performula
Is that 48or 64p? I'd like to stay stock at 48. If so what spur do you have?
64p. A lot depends on how much boost you run. It was my first time running 13.5 boosted, so I was playing around a fair bit with boost and turbo settings. Was faster than I thought 13.5 should be, and was getting up to 130F after 5 minutes.
To get 4.9875 FDR with the stock 84t 48p spur (it is 84t, right?), you'll need a 32t pinion.