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Old 03-11-2012, 11:59 PM
davidmij davidmij is offline
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Default 390 heads and intake question

Greetings FE people,
I'm replacing the heads on a 1967 390 with some that have larger intake ports. The heads I'm installing are C4AE-6090G. The old ones were C7AE-xxxxx. Do I have to use an intake manifold with larger ports to reap any benefits? The heads and intake are stock cast iron ford parts.
Also, is there such a thing as porting the intake? The ports on the newer heads are about 3/8 inch longer in the down measuement. (Does that make sense?)
Should I look for a used Edelbrock Performer RPM as described in Barry Rabotnick's "Max performance Ford FE Engines" book? Will there be all that much difference in performance?
As you can probably tell this is the first time I've ever done anything with an engine.
thx for any advice!
regards, DAve J.

PS: I can post pix if that helps
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