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Old September 14th, 2016, 05:59 PM
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TJ's GMC TJ's GMC is offline
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Join Date: Mar 2015
Location: Cave Junction, Oregon
Truck: 1964 GMC 1500 LWB Wideside 305E V6.
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Default Re: Next question, intake

Quote:
Originally Posted by WyoRoadDog View Post
TJ, to clarify, did you port the heads to match the intake, or leave it as is?
Left as is, the magnum ports really are not much bigger. The main difference is Magnum is Open ported and non-magnums are split. But there is a slight size difference none of which I have had to worry about. Did a plug check and it's burning super clean. And that's with a pertronix and the plugs gapped at .035!
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1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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