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Old 09-12-2006, 05:08 PM
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how to run heat riser tubes?

I want to run Fenton Headders on my 235 I6 Chevy, the problem I see is the factory manifolds are bolted togther and in the center, there is a exhaust gas heat riser, the fentons or any other headder made for the 235's do not have this provision. Fenton makes a block off plate but I will run this engine on cold mornings of September ( last month of cruising, 1 last show for the year than it's it ) and need the atomization help. I'v seen where there are small tubes run up to the intake but there are no how to's on the net. any idea's? thanks

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Old 09-12-2006, 05:49 PM
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Now you are talking my engine!
Get yourself an Offenhouser(sp) intake. It can be had with either two or three single throated carbs. But there is a provision for hot water to run inside the manifold to do what you are asking for. I never hooked the water to the manifold because I wanted the gas/air mixture to be as dense as possible. I ran this set-up in a 55 Chevy way back in the day.

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