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Old 09-08-2004, 07:24 PM
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how much horsepower

I was wondering if someone could give me a good estimate of horsepower, 350 four bolt main, bored to 355, 280H magnum cam 480 lift, vortec heads 64cc, keith black flat top pistons around 10 to 1 compression,.

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Old 09-10-2004, 06:23 PM
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I bet it makes about 380 at the crank.
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Old 09-14-2004, 12:52 AM
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I'd say with the right carb/intake and exhuast your could be makeing a little over 400HP.
One thing Vortec heads max out at about .470-.480 lift check your retianer to seal clearance befor you fire it.
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