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Author Topic: 318 and 360 intake manifold port sizes?  (Read 1132 times)

38dodge

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318 and 360 intake manifold port sizes?
« on: September 14, 2011, 09:25:13 PM »
im looking at purchasing an intake manifold for my 318 with 360 heads. i have machined the decks and heads and am getting about 180psi when doing a compression test. also am running a mild cam. going to be running a 650 road demon carb.wondering what intake manifold would suit me? is there a differnce in intake port size between 318 heads and 360 heads as looking at the edelbrock catalogue it says 318 - 360 is the same???



Offline clint

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Re: 318 and 360 intake manifold port sizes?
« Reply #1 on: September 14, 2011, 11:18:48 PM »
318 does have a smaller port, the manifolds bolt on and work though......just a mismatch in port sizes.

i had a 318 with small port heads/victor jr and 650dp. complete mis match of parts but it still went well, ran mid 14's in a vg

Offline Airstream

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Re: 318 and 360 intake manifold port sizes?
« Reply #2 on: September 15, 2011, 05:16:31 PM »
most alloy intake are the same size as the 360s.

to tell at swap meets is. put your top 3 finger in the port if it a little tight to nice fit its a 360 port size. 318 one i can only fit 2 1/2 fingers in.

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Offline 77CLute

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Re: 318 and 360 intake manifold port sizes?
« Reply #3 on: September 16, 2011, 09:56:07 AM »
or BIIIG fingers :)