High compression with aluminum heads and pump gas???????

Yup, that'll do it.
Thx for responding.

As to my Eddies, I never measured them. I assembled the engine, flipped it on its side with a plug hole facing up. I poured in oil to the bottom of the hole and measured the fill volume. I knew my deck height,and the head gasket's published ccs,so it was easy to do the math and figured the Eddies at a published 65cc were pretty much right on. Then I ordered my cam(which I had targeted) to get the Dcr that I believed would run on 87E10. I set it up with a thin headgasket, the idea being that I could lower the Dcr if needed by going to a thicker gasket. Well at crs of;11.2 Scr and 8.2Dcr, the 292/509, was right at home.
That was the first of 3 cams.