So...I'm thinking about adding a blower to my 21' Liberator jet with an EFI 383 LS1. But, I can't decide between a Whipple or a Procharger (because I want a closed engine cover, turbos are not really an option right now).
The target is 650-700 hp max. I will not exceed that with my current engine...and will most likely have the power down in the 600-625 hp range; but would like a little growing room.
I had been set on a Procharger, and according to company I'd need 4-5 psi of boost with an intercooler to achieve my goal. But...then I did some thinking on the Whipple twin screw - and they appear to make good peak horsepower, but with increased power in the low to mid range over the Procharger. However, Whipple said my goal would require about 7 psi of boost. The Whipple is more money, BUT that prices includes the built in intercooler. However, once you add all the required parts to a Procharger, the price is very close to the same.
I just have no idea which direction to go...so I'm looking for advice.