Quote:
Originally Posted by GTX JOHN
As I recall the 1967 375 HP engines had 2.08 and 1.75 Valves and were stamped HP on flat area on front of head. The lower HP versions such as in the full size none HP "C" body had 2.08 and 1.60 valves. Only apparent difference was valve size...casting was identical on all 915's. You do have to run original stock size exhaust valve on early engine 1.60......but they still work fine. John Irving
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John, you are correct that the 67 head had the larger exhaust valve. the 66 head has a smaller exhaust valve, but also differs in that the exhaust floor is higher and also the transition into the exhaust is higher and longer that the 67 heads. At least in all the various sets I have. I have another question, and it is "Do the 66 915's flow better than the 516 heads straight "stock"?
And I appreciate all the positive feedback, about my choices, since it seems the racers that are tryin' to talk me out of it drive chevies or fords.
I believe that both cars would be very competitive, and may build both and make my daughter drive what she calls "Ugly little car." We can always try to take them with numbers huh. Thank's ya'll I feel welcome here.