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Old 01-07-2015, 04:59 PM   #2
JM 35 Sedan
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Join Date: May 2010
Location: Near Rising Sun, Maryland
Posts: 10,876
Default Re: `35 intake manifold - differences in aluminum and years

What is wrong with your existing cast iron intake that requires it to be replaced. Could it be repaired? That year truck came with a CI intake, so going to an aluminum passenger car/light commercial intake would not be correct if you plan to show your truck for points judging.
I don't believe that aluminum would have any advantage other than some may think it looks better/nicer.
I did read a test report by George Mitchell (also known here as G.M.) that a cast iron intake transferred less heat to a mechanical fuel pump if/when considering how to prevent vapor lock when just using a mechanical fuel pump with no backup electric to rely on (especially the glass bowl versions) with today's 10% alcohol gas.
I have a cast iron intake on a '35-'36 21 stud LB engine that I may be talked into selling.
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Last edited by JM 35 Sedan; 01-07-2015 at 09:35 PM.
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