09-12-2004, 11:35 AM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Not Ranked
6500 WILL be the new rev limit, shift at 6000 and save the motor. I'm thinking flat tappet solid for the cam rather than hyd, and of course light weight springs to match. BIG spring pressure compounded the original problem I think.
I really like the "original" aspect of how the motor is setup now. Iron hi riser heads and alloy 2X4 intake, all major parts bearing Ford OEM numbers. I'm even considering going with the original 1965-66 cam specs for the 425 h.p. 427. Nah, to mild, I'll go a little more wild on the cam.
The paperwork with the engine indicates a gain of 96 h.p. with the sidepipes removed and shorties installed. I ran the 1/4 mile with the shorties and could FEEL the increase in power. 11.90 at 121 mph. I won't be seeing "11's" again after the new more mild build. I DID have detonation issues with the 12.5 C.R., having blown a head gasket early on with the car. I feel I HAVE to reduce the compression to achieve the "streetable" pump gas goal.
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