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Old 04-23-2012, 07:49 PM
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how much horsepower & torque

i am new to big block chevy's & just wanted any experienced guesses on the power that this motor is making..030 454 with flat tops mutha thumpr cam 243/257 @ 50 522/507 closed chamber heads(3904390) that have been rebuilt with a valve job standard size valves rpm intake 750 holley & headers.i know it sounds way over cammed but i did do a compression test & every cylinder had 175 psi...thx

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Old 04-23-2012, 07:58 PM
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Not much info, guess 350 HP.
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Old 04-23-2012, 08:40 PM
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My guess, 400-425hp, 425ftlb.
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