Heine Hansen - DK Posted November 1, 2004 Share Posted November 1, 2004 Searching for a left side exhaust manifold to a 1955 Buick Special (264 cid). Does a manifold from a 322 fit ?? Link to comment Share on other sites More sharing options...
brad54 Posted November 1, 2004 Share Posted November 1, 2004 A manifold from a '54-'56 should fit--for '56, you'll need a single-exhaust manifold. They'll all work whether it's 264 or 322.Also, for what it's worth, the '56 manifold outlets are larger diameter. If you find a pair of '56 single exhaust manifolds, you'll have a better flowing exhaust system.-Brad Link to comment Share on other sites More sharing options...
Heine Hansen - DK Posted November 3, 2004 Author Share Posted November 3, 2004 Thanks alot for the infomation. I'll try'n locate some manifolds to a 1956 then... Link to comment Share on other sites More sharing options...
kenmatthews Posted November 4, 2004 Share Posted November 4, 2004 Hey Heine,See Judd's post on a different forum below. In case you can only find dual-exhaust headers...56 dual exhaust manifolds will work but you'll have to cut holes in the drivers side frame like on a 56 for the pipes. I think there are issues with the brake cylinder also but I know others have converted a 55 to duals so it can be done. An upgrade for a 55 322 would be a 56 4 barrel 322 they have the highest compression of any 322, the biggest valves, the highest lift longest durration cam, and the most free flowing heads. Link to comment Share on other sites More sharing options...
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