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Battle of Budget Boost! Centrifugal vs. Roots, Paxton vs. Weiand

Boost is good. Forced induction makes huge power, and you want it cheap and easy. This time on Engine Masters presented by AMSOIL, we look at the two most affordable implements of boost from SummitRacing.com: a Paxton Novi 1200 blow-through-carburetor centrifugal supercharger setup ($2,483 at the time this was posted) and a Weiand 174 Powercharger roots blower ($2,794.95). Both of the blowers are tested on a Dart SHP Ford 363ci engine. In the episode, you’ll learn about installation details, problems, hidden prices, and, of course, the shapes of the power curves! Hint: We turn 450 hp into 675 pretty easily. If you want to duplicate an engine like ours or look further into the tech specs, here are the part numbers from SummitRacing.com: The Paxton centrifugal supercharger is the self-lubricated kind, so an oil-return line to the oil pan is not needed. We chose the satin finish, as it’s priced lower than the polished kit. The part number we used was 1001864SL. The Weiand 174 Powercharger roots supercharger kit was also satin rather than polished, part number 77-174FSB-1. The Dart SHP 363ci Ford has an 8.2-inch deck height like a 302. The part number at Summit is DRT-03243632. With the roots blower, we used a Holley Aluminum Ultra XP 850-cfm carb, HLY-0-80804HBX. Holley also offers supercharger-specific carbs with boost-referenced power valves that would be a better choice for use in a car. With the centrifugal blower, we used an Edelbrock Victor Jr. intake manifold, EDL-2921.


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