kevtherev

Presently fitting P-1SC Procharger to my LS1 engined 61 Vette.Pulley is numbered 385 and about 90mm diam.Engine is running stock crank damper.Anyone know what psi this will be making.Thanks.

NovaCain383

iTrader: (8)

How big is the crank pulley?

kevtherev

Don't know.Check tomorrow.Will be back,thanks.

EPP

iTrader: (22)

How much boost the blower can produce depends on many variables.
* Cubic inch. The larger the engine the less boost it will make with a P-1SC.
* Headers and exhaust. A better flowing system will produce less boost, requires a smaller pulley to regain the loss in boost. Ultimately though, more power will be gained.
* Camshaft and heads. A camshaft with some overlap will leak out some boost through the valves. Better flowing heads react a lot like a better flowing exhaust system.
* Altitude. Elevation plays a big part in how much boost is produced. Those people living in the higher elevations have to spin the blower harder to see boost.
* Condition of engine. An engine with real good sealing rings will ultimately produce more boost than one with worn rings.
* Rpm. An engine that is spun up higher in the rpm range will normally produce more boost. Bob

kevtherev

Thanks for that but pulley size is also a primary factor in determining boost so what is my 90mm procharger pulley with 180mm crank pulley going to possibly produce?

EPP

iTrader: (22)

I would say 6 to 8 psi. Bob