Not sure, but the Eaton website has the critical info on the blower available. Max RPM's, etc. Someone on here did the math and figured that at redline, the blower was running real close to max speed. What RPM does a GP run up to? We're hitting 6,450 as the max, I'm under the impression that the GP is a little lower than that, and with the RPMs of the charger increasing more than the engine I think it gets pretty close. Let us know what ya think, always can use more opinions. When I saw the pulleys at the Cobalt site though it got me thinking that maybe it can run a little faster.ZR2_S10 said:I find it hard to believe that GM would run the blower at or near max speed. The grand prix gtp's come stock w/ a 3.8" pulley, and guys run down to a 2.6" pulley with gains.
How big is the stock pulley?