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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Mar 2005 Posts: 1,513 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,513 | The heat riser flapper is missing from my manifold, but I expect it will still provide enough heat, just not as fast. A functioning heat riser is what sets the vette manifold or a split one apart from the rest. Heat on at startup directs exhaust up to quickly remove the chill from the intake and heat off directed down and away from the intake once the spring has warmed sufficiently and a weight to keep it there. With no flapper you invite vapor lock and other grief associated with overheated carburetors. I would suggest to scare up the parts and make sure it functions properly for good driveability at startup.
1952 1300 Canadian 1/2 ton restomod You Tube | | |
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