Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - SBC header tube diameter
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Old 04-02-2013, 02:45 AM
snakebit68 snakebit68 is offline
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I would advise you to go no smaller then 2 1/2" pipes....and 3" would probably be even better. You're going to need that engine to breathe. The last thing you want is backpressure with a supercharger. I ran a smallblock with small diameter pipes with a blower in the past...I blew it up. It matters more how much you can evacuate from the engine then what you can force into it.
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