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Names Mike, I own a 70 chevy C10 1/2 ton pickup RWD 4.1 L 250 cu. in. These Motors were built with 155 HP. Owned this truck for two years so far and have been putting all my money i can spare into it. Just bought a new Offenhauser Intake Manifold from Summit. Going to be putting a 500cfm carb on it, with an upgrade of new pro cam with over a half an inch of lift. Hopefully this thing can pull off 275 HP with it.
 

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Welcome!!
You got pics!!
Don't forget headers too! Langdon's stovebolt cast iron headers work good.
Good luck makin' 275 hp. Maybe 200 if you're lucky unless you're gonna do some extensive head work and bump the compression up to 10 to 1. A head off a 194 will bump your compression up there.
 
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