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OK, I think I am done for this year, I added a factory four barrel intake, a edlebrock 500 cfm carb., a set of headman headers, and a edlebrock 2122 cam and lifters, how much horsepower do you think I have gained? (66 289 c code, 200 horse).
 

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Did you dyno the car before the mods. If you were at 175+- rear wheel horsepower before, you should see a 25-40 hp gain ... It'll be hard to gain more than that with that carb and the factory heads.
 
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