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Re: 1964 GMC 1500 "crustine" semi- build.
Hey guys!!! Well there's been a change of plans. I was going to modify a 305 intake for a 4 barrel, but decided to be lazy and find a Magnum manifold. These require no welding and are Much easier to open up. Enclosed are some pictures...305 manifold on the left and 351M or larger manifold on the right. Notice the difference in port size between the 305 intake and the magnum intake. lol Getting excited!
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