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Old 06-17-2008, 11:26 AM
tnewland tnewland is offline
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Join Date: Jul 2004
Cobra Make, Engine: CSX 7030 HP 289
Posts: 137
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A 289 with a Holley 4010 600 cfm vacuum sec. carb., FMS 303F roller cam, Edelbrock Performer RPM 2.02 intake heads, Hi-Po distributor with no vacuum advance, Tremec 3550, 3.54 rear, and 2.95/50-15 Dunlops yields a little over 22 mph highway. Which is okay but, in my quest for maximizing efficiency, it can do better. I read the Chevy mag article on carb tuning and it sounds promising; but I don't think it was written with the Holley 4010 in mind. One good thing is my little 289 runs just fine on 87 octane, a significant money saver. In SoCal I can drive it almost anytime I want. And I do, so I don't want operating expenses to enter into my decision as to which vehicle I'm going to drive. Tom

Professional Driver. Closed Course. Do Not Attempt.

Last edited by tnewland; 06-17-2008 at 11:38 AM.. Reason: addition
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