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Old 08-02-2004, 09:44 PM
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Reverse Heads

Alright, gentelmen, here is a question for you. I heard a story the other day about a reverse head that was once run on some drag cars as well as some land speed cars. The plan was simple: grind a larger exhaust valve, buy a reverse ground cam (a custom cam I might add) and switch your intake to the bottom of the engine with the exhaust running out the top of the engine where the intake manifold used to be. I realize that this sounds like a waste, but think of the potential gains in intake by having access to cold air right outside your fender with iyour intake on the bottom like that. But, this was just a sotry I heard, I do not know the truth of it. If anyone out there has any ideas, facts, or knows anything that should be added to this, please speak and be heard.

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Old 08-03-2004, 06:47 AM
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I dont know the exact deteails, but yeah, thats basically it, I forget who it was, but I recall pics of it with a story
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Old 08-03-2004, 08:11 AM
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It was fairly common when running a blown Nail Head. The intake port flowed well but the exhaust port flow was poor. By using the intake port for exhaust, you could overcome the poor flowing exhaust port with more boost. Mickey Thompson had an Indy SBC that the intake port relocated to the outside of the head for a straighter shot at the valve. Flat head Fords would run the exhaust ports in, toward the intake to increase flow, and to take heat away from the tops of the cylinders.

What motor are you working with? If you are working with something as common as a SBC, go with todays technology for max power. If you are starting with an odd ball motor, some of the old timers tricks may still be valid. Any of the old tricks would look way cool at a car show. Dan
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