Classic Engine Tech 1967 - 1981 Engine Related

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Old 03-29-2009, 11:11 AM
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BBC Power

Can a BB 454 be powerful with 9.5:1 CR?
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Old 03-29-2009, 12:42 PM
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Why not? CR makes torque without changing anything else. Camshaft and heads determine how much power it can make.
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Old 04-02-2009, 05:43 PM
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Hell yea.

Put some good oval port heads on it (if its a street car), decent cam without a bunch of overlap and have at it! A good intake and carb will help too.

I had between a 9.5:1-10:1 468 (454 bored .060 over) with factory 781 oval port heads, a Comp Magnum hydraulic 244/244 @ .050 .550/.550 lift cam, Pro Products single plane intake, a flowed Holley 850 in a 79 Z28 that weighed around 3400 and went 11.0's in the 1/4.

With that weight that car needed 500 HP to get that job done...

Last edited by Rice Killer87; 04-02-2009 at 05:45 PM.
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