The stock pulley on the Joe Gibbs superchargers is 3.6", and was just wondering who all has done a pulley change on their Joe Gibbs edition tahoe or truck? What size pulley did you reduce down to and how much boost did the new pulley make?

 

from my experience, every .1" reduction in diameter nets just a hair less than 1 psi increase.

 

I just bought a 3.3" pulley straight from magnacharger and they said that it is the only pulley size they offer for the Joe Gibbs edition. Being how they don't make them anymore.

 

Im looking to swap the pulley on mine but its completely stock so how much could I go up and still have it safe for the internals and still be a daily driver? Im not looking for huge gains, was thinking of maybe a 3.2 for 4 more lbs, would that be too much? Or do you think 3.4 would be better? Then it would be about 7.5lbs instead of over 9 with the 3.2.