boat has a 500hp (aluminum heads) with an M1 procharger (intercooled) at 3-4psi boost. Fuel system consist of aeromotive a1000 fuel pump, 850 cfm holley carb
i am concluding that this is a factory type set up from procharger (m1 kit)
the pulleys are a 2.75 blower pulley and 7.625 crank pully
looking to up my boost. boat runs 5100rpm with a 29p 4 blade and has a thunderbolt V ignition.
would like to have 5-6 psi boost and possibly prop it down to keep off the rev limiter (not sure what it is set at on the 2003 hp 500s carb)
i have researched that going down any more on the blower pulley will increase belt slippage and lose surface area...so thinking of staying at 2.75 and getting a larger crank pulley? any idea on where to get that from?