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#3
12-25-2018, 03:58 AM
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Thanks for the questions. It is not a 074 head. It is a prototype open chamber head from before the 074 was made. It is based on a 842 head with the plugs on the ends and the sloped exhaust ports. The 074 head used an exhaust port with a different external design that was more upward and rounded. Yes, the chambers are originally open chamber with some casting still intact.
Last edited by SuperNovaSS; 12-25-2018 at 04:03 AM. 
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