Thread: 454 supecharger help

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Originally Posted by 71SS

Hey guys,

I’ve just bought a Vortech V-7 YSI kit.
I have a 1971 Camaro with th400 and 3.73 gears.
It’s a street/strip car with a BB 454 mark IV (2 bolt main) with main girdles, TRW forged pistons, GM steel forged crank and GM 7/16 "dimple rods" with ARP bolts, and it’s all std (approx 550hp). It has a Dart heads 320cc, 1.7 roller rockers, stud girdles,850cfm mighty demon carburetor, Victor Jr intake manifold, Competition Cam solid flat tappet (advertised duration 274/280, lift .568/.578, lobe 110), Patriot headers (2 in. primary tube diameter,.3.5 in. collector diameter), 3 in. exhaust system, MSD 6AL, MSD Probillet distributor and CSI electric water pump. The compression ratio is 9.5:1.

I am looking for an honest 900 h.p. on pump gas (92/93 octane), want drivebility and reliability. I also have experience with modified engines, but NO Blower experience.

Here are my questions:

Considering the rods, pistons, crankshaft I don’t think the engine will handle more than 900hp, what do u guys think?
My supercharger setup comes with a 5 pound pulley, so how much horsepower it will make? how much boost do I need to make 900hp and how much safe boost do you guys think i can run? With more than 6 pounds do I need a bypass valve and intercooler?

Thank you

headers are to small and the ex need to be bigger the cam i would run a roller a bit bigger maybe more lsa and yes a intercooler and more boost for 900 hp 9si or more?