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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Mar 2009 Posts: 11 New Guy | | New Guy Joined: Mar 2009 Posts: 11 | What other size engine manifolds will fit the 228 GMC? A previous owner attempted to weld them together under the carb area and when I pulled it off to change the gaskets, the weld broke and took some of the manifold as well. | | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | 39to53 228,248 is the same intake manifold. It has the small ports and the larger manifolds will not match the alignment rings. 228 from 39 to 54 are the same. Larger manifolds will fit. The outlet will be larger on the larger engine manifold, but that shouldn't present too much of a problem. | | | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | I'll agree with everything above, but I will also add the 55 248 and the 56-59 270s as these were also small port engines. | | | | | Joined: Mar 2009 Posts: 11 New Guy | | New Guy Joined: Mar 2009 Posts: 11 | Is there any chevy 6 manifolds that will work??
(Thanks for the info so far)
Russell | | | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | Why would a chevy manifold fit the longer gmc motor? (Look up long motor envy) Chevy manifolds fit chevy engines, gmc manifolds fit gmc engines of this vintage. You might be able to make a chevy manifold fit with a "BFH". | | | | | Joined: Mar 2009 Posts: 11 New Guy | | New Guy Joined: Mar 2009 Posts: 11 | ummmm...good answer there buddy...I'm a little new to these older inline sixes, but I do know that later on gmc trucks used chevy engines. | | |
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