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Old 01-29-2018, 08:08 PM
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Tom Vaught Tom Vaught is offline
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Join Date: Dec 2001
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This info posted is very telling:
"Another selection tip is to 'undersize the carburetor' slightly. As an example, Car Craft tested a 540ci big-block Chevy on the dyno with a blow-through F2 ProCharger in the Oct. ’05 issue (“Blow-Through Superchargers”), making a repeatable 976 hp on pump gas with what most enthusiasts would consider a too-small 750-cfm annular-discharge Quick Fuel carburetor. While power was limited with the factory iron heads, the carb and fuel-delivery system performed flawlessly.

A F2 Procharger Centrifugal Supercharger is a LARGE Supercharger as is the 540 Chevy Engine. 976 HP.

So now we go back to the Little Pontiac Engine that Mark from Luhn Performance did (limiting the rpm to 5300 street rpm. Luhn made 863 HP with a much smaller Vortech "T-Trim" supercharger, 462 cid engine, 300 cfm heads and also a 750 cfm Holley Carb.

540 vs 462, limiting rpm to 5300 rpm, 300 cfm basic E-Heads, 750 cfm Blow Thru carb. 976 vs 863 hp. 78 less CUBIC INCHES, less engine rpm, smaller blower, The little Pontiac was making 1.86 hp per cid vs the 1.80 per cid of the chebby engine. Luhn Performance kicked their butt basically with a "lesser engine"

Tom V.

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