Originally Posted by Supercharged SS
It's an 10% overdrive pulley, not an underdrive pulley. On the rebuilt stock bottom end 12 or so mid to low 10 second passes. I just got the car back a wk ago.
Yeah, I understand why an under drive pulley would be counterproductive on a blown engine. But what's the point in an over drive pulley. Why not adjust boost with the blower pulley, and let well enough alone? Is there some benefit to pulling the belt itself faster?