80FoxCoupe
Well-Known Member
Everyone has a different approach, let the results do the talking!I would maybe do a 4.5 if I had head studs
Someone said each pulley is 1.5 lbs of boost.
Anyone know if that's true on each blower or D1x or p1X
Friends car with D1sc and 4.75 made 14-14.5@8k
This all is info with 15-17 cars, with 18+ and there crank pulley you have to go down 1 size to match up...kind of
Let me know what you guys know about pulley sizes
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