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how much horse power does a 390 have?

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Old 08-29-2004, 03:22 PM
71-f100man 71-f100man is offline
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Question how much horse power does a 390 have?

i have a 390 w/ straight header and a holley four bbl, i was just wondering how much horsepower it has or an approximate guess. and if u have a clue on gas mileage.(manual tranny).
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Old 08-29-2004, 04:37 PM
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prolly around 275hp and about 10mpg average.
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Old 08-29-2004, 05:24 PM
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Ya I agree with fordman....sounds about right, but I'll go about 12mpg...cause I get 10 with my C6...

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Old 08-30-2004, 10:24 AM
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thanks for your help
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Old 09-02-2004, 08:11 PM
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how much torque does it make?
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Old 09-03-2004, 06:25 AM
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I think stock there around 376 @ 2600rpm.....

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Old 09-03-2004, 06:25 AM
 
 
 
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