[Outlaw1]

Originally Posted by Goat Blower

Nah, there's no cancelling of boost to run the supercharger. It's only parasitic drag on the crank that cancels some horsepower, not boost.

I just read last night that a regular old centrifugal supercharger can use up to 50 horsepower to run it on a big block Chebby. They also talked quite a bit about the drag from the supercharger pulling crank pulley's apart. They also can bend a supercharger mount that's not strong enough. They use two 3/4" aluminum plates to mount the supercharger. Interesting.

Steve

You would be blown away if you saw the amount of deflection in a ProCharger D1-SC bracket setup on a Fox body Mustang. Within the last few years the craze has been to use a huge supercharger at a low boost setting to keep the intake charge dense. You should check out the belt tension it takes to get an 8-rib setup from slipping with a D1. It makes me feel very sorry for the supercharger bearings, engine main bearings, crank snout/pulley and brackets. Unless you go cog drive, you're stuck with serious belt tension with a big centrifugal and an 8-rib.