Quote:
Originally Posted by Nismo 370z
Anytime man. I dunno if there is a difference betweeen an underdrive crank pulley and a light weight one like the one stillen offers. Maybe one and the same thing  . |
I know a good UD pulley on my LS1 was worth 6 or 7 HP, too. All depends on the car you're throwing it on, of course. But, I certainly would NEVER expect more than that on ANY car.