[Steve C.]

Off topic, but related to that question and a FWIW.....

Dave Bisschop states his CNC 290-295 KRE D-port heads on back-to-back dyno testing with a street/strip pump gas combination will produce as much or more more power than his CNC 315 cfm Edelbrock heads. The D-ports produce their cfm number at 0.550" valve lift and the Edelbrock heads at a slightly higher 0.600" lift. Both heads use the common FelPro 1233 intake gasket, but between the two the KRE heads would have a smaller intake runner volume.

What is not mentioned in the testing is the camshaft details nor the peak power RPM for each cylinder head. Or the compression ratio for each head. In addition the type of chamber design on the Edelbrock head is not stated, there would be a considerable difference between the older style 'bathtub' design chamber and a 'heart-shaped' chamber, that and the amount of cc's involved. Out of the box the Edelbrock 72cc head flows more than their 87cc head.


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