| [GMCnet] Got an Olds 307 aluminum intake manifold coming Thursday for my 403 [message #311890] |
Sat, 07 January 2017 20:57  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
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Amazingly my main interest in an aluminum manifold was that I needed to pull out the stock iron manifold. And didn't want to put that heavy thing back on. Now this idea has brought up some other issue when installing EFI on my 403. And these same issue would be involved with an iron, or aluminum manifold anyway. You have to install a 3/8 inch adapter to mount the TB. And I don't like the turbulence that is creates due to the adapters alignment with the intakes carb ports. I want to uses the stock air filter. The adapter moves the air filter into the distributor. So I'm thinking of machining out the aluminum intake were the 4 holes are for the carb ports. Then weld in an aluminum 3/8ths inch mount down in the manifold for the TB. Thus this will lower the TB. Then I can move the TB to were I want it to be. Bob Dunahugh 78 Royale Mouse House
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