Thread: Rear exit manifolds for flathead 39 Ford
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Old 06-01-2020, 04:52 PM   #20
drolston
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Default Re: Rear exit manifolds for flathead 39 Ford
Quote:
Originally Posted by Mr 42 View Post
What is the single most effective way then?
Cubic inches, which if the heads remain the same, brings added compression ration as well.
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