Does anyone know if the rsm underdriver pulley helps or hinders the boost output?
HINDERS BOOST. Your turning the charger slowing, so your car will see less boost.
You want an over driven pulley for more boost, or a smaller charger pulley.
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
That's what I thought. Thanks man my friend was filling my ear with
any of these smaller pulleys on a GM s/c'er will not physically work... they are too small in diameter and the belt wont even be tight at all.. i could not even make my sisters belt tight even with a 3.0" s/c'er pulley on it, there was still about 1" of slack
The First Twin Charged jbody
blue car (R.I.P) - 240whp @7psi..
silver car - 305whp 315lbs.tq @15psi (91 Octane) or 420whp & 425lbs.TQ @20psi (94 octane+Alcohol Injection)
All dynos run on a Mustang dyno
So, I have the pulley boys quick change system and I would like to know what kind of pulley puller I need for the gm charger.
there is a belt that you can get @ napa and other stores that is a bit smaller
josh: try Goodyear Gatorback #4050722 (72.25") (metric No. 5PK1835 --> 1835mm). is around .6" shorter then stock and that could help you a bit
Do you remember how much it was and what about the pulley puller?
