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How close did the Cadillac Eaton M122 match up to the Hemi? Bore spacing smaller? Adapters used? [/quote]


Northstar is only a 4 inch bore center, the intake spacing is 4.25, adaptor was a 1 inch think by 2.5 wide piece of alum, during the conversation about the trail and error fitting , he started with lining up the intake as best he could on the center 4 cylinders, and did all the port transition work in the adaptor.