Re: 1961 GMC 5500 Tilt Cab Project
Your 401 should be a Magnum, if it's not I will be a little surprised. There are numbers stamped on the block just forward of the right head. If yours is a Magnum it will say 401M.
As for my 305, much better over the 2 barrel.
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Mileage is decent if I can keep my foot out of it and it has no problems lighting the tires in 2nd. I went with an HEI and dual exhaust(recommend, especially for a larger engines).
Ed Snyder would be the one to talk with as he has a 401 with a 4 barrel.
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1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
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1966 Chevy C10 292 hotrod 6/TKO600
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