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Old 05-10-2008, 11:51 PM
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400 Chevy Small Block

I got a 400 Chevy Small Block whats the avgerage hp on them because I'm putting in my 69 Chevy C10 and I wanted to know if it got enough power for me.

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Old 05-11-2008, 12:06 AM
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Well, average when new, or average for todays leftover 400's? If it's a stocker, it isn't going to have any significant amount of HP. But then, that just might be plenty enough power for you.
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Old 05-11-2008, 12:09 AM
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One of my dads friends built it for him and it has way low mileage on it but its been sitting on a stand in the garage for about 10 or 11 years now.
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Old 05-11-2008, 12:39 AM
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Quote:
Originally Posted by 69ChevyC10
One of my dads friends built it for him and it has way low mileage on it but its been sitting on a stand in the garage for about 10 or 11 years now.
Pull one of the valve covers off and write down the casting number on the top of the head, below the springs/rockers. Post the number here. Also post the type, manufacturer and model no. of the intake manifold and carburetor.
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Old 05-11-2008, 03:07 AM
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Well at age 13 you have plenty of time to build it the way you want it. Take your time and get the right combination for the application you intend to use it for.
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Old 05-11-2008, 05:50 AM
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Nearly all chevy 400s were produced during the most abyssmal part of the 70s-80s. HP ratings ranged from the 150hp area up to 215hp area.

Nothing tire blistering, but torquey from idle to 2000. Then it was all wheeze up to 4000 rpm where things went from decent to flaccid
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