10-25-2009, 08:24 PM
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CC Member
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Join Date: Sep 2009
Location: Sacramento,
CA
Cobra Make, Engine: ERA 707, 446ci FE
Posts: 1,115
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Not Ranked
I just replaced my 4160 (750 CFM) with a Barry Grant Speed Demon 750. Besides all the other advantages, it has glass float bowl sights, so I can set the float levels with the engine running and no splashing gas.
I took the jets down two steps but am not sure it was necessary. Had some detonation but discovered I had almost 25* of initial timing instead of 15* (don't ask). Backed it off to 15* initial and will see how it plays tomorrow. Much crisper throttle and none of the Holley's bogging.
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