I have a 84GT5 which puts out 420bhp. My ring and pinion is 4:22. I'm looking for 180/190mph. Currently I run out of revs at 145 which is very frustrating. Will a 3:77 ring and pinion do the trick, and does anyone have one? Thanks!
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Marino Perna of Pantera East tooled up and had some made, but they're not cheap. He also had a 0.655 gear ratio made up for the ZF, which makes about the same percent change but only for 5th gear. This is another option.
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