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39 small port heads on a later 74

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BrentCross@Bronko's

Posts: 88

Joined: Thu Feb 01, 2007 8:20 pm

Post Wed Sep 24, 2008 2:45 pm

39 small port heads on a later 74

Want to try my original 39 (small port) EL heads on my later 74. Any issues to be concerned with? I wonder how the intake manifold will line up but any tips would be greatly appreciated.
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Chris Haynes

Posts: 2631

Joined: Wed Jul 05, 2000 12:01 am

Location: Los Angeles, CA

Post Wed Sep 24, 2008 3:31 pm

Re: 39 small port heads on a later 74

BrentCross@Bronko's wrote:Want to try my original 39 (small port) EL heads on my later 74. Any issues to be concerned with? I wonder how the intake manifold will line up but any tips would be greatly appreciated.


Being as the size of the intake nipples are different on the 1936-'39 heads VS the 1940-'47 heads you will have to use a '36-'39 intake. Your 74 jugs don't have a fire ring on them so there should be no problem there.

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