Quote:
Originally Posted by Gscherer78ta
Did you check those chambers for Volume? The info I have and the chambers I measured on my #46 heads says they are 73cc chambers and when I checked them I got 72cc. Mine had press in rockers as well which I drilled and taped for screw in and I enlarged the exhaust valve to 1.77 on my 400 build.
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I didn't do any sort of fluid measurement like you suggested...I went by the chart on Wallace Racing, my date code indicated that they came off a 1969 400, and it didn't give a chamber volume. It simply said 10.0 CR, and my valve size matches what the chart indicated. Leap of faith in hindsight, but all sources I had recommended using the charts from Wallace.