I researched this a couple of years ago before I bought my pulley. Even with the decreased diameter of the 2.3 inch pulley, the SC is still within it's safe operating RPM range. I agree that bearing life may be sacrificed some but I feel pretty confident the SC will hold up to the increased RPMs. Besides, there have been several people on this forum that have performed this upgrade and I have yet to hear of someone blowing up their SC because of this mod.

Josh

Quote:
Originally posted by ATFrontier:
Alot of money spent for a gain of 15-18hp and the assurance of replacing the blower alot sooner. The pulley salesman was doing his job. Selling. I would love to see the dyno sheets that show a 26hp gain.
The stock blower on WOT is 7-8psi according to my gauge. The aftermarket pully might get it up to 12-14psi.
For the cost of the parts and subsequent blower replacement it's just not worth it. But hey, it's your truck so good luck.