Reply to "Dyno of Edelbrock Heads"

Mark Savage (Guest)

Hello Jon, I will try to rescan and get a better image. I don't know how to send PDF files.

74LQQKR, My motor has factory original pistons and crankshaft. I estimate my compression ratio to be a math challenged estimate of 10:1. Chamber volume dropped from 76cc to 60cc. I'm using Comp pushrods #7976-16. Guidplates are designed for 5/16 diameter and pushrods need to be hardened and a Boss length of 8.495 - 8.500. Bolt down rocker design of a CJ will only be a non-hardened 8.400.
I am considering going with the Comp hyd roller #32-541-8 that seems popular with others here.
Edelbrock has recently introduced a flat hyd #7168 with 230 dur and .578 lift. Althought the peace of mind at not flattening a cam may be worth the three fold price difference.
The Comp Cams power estimator program promises a 70 hp increase with this roller cam. Seems wildly optimistic but I'm intriqued.

regards... Mark

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