02-25-2012, 07:41 AM
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CC Member
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Join Date: Jan 2008
Location: Topeka, Kansas,
ks
Cobra Make, Engine: Kirkham 557
Posts: 67
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Not Ranked
Kevin, good luck with your project. I have a KC 482 w. stage II heads and 600 hp in a 2100 lb. Kirkham. The motor runs great, plenty of torque, but the only thing I would add to the comments the others have made is that with the configuration I have I have to run the engine at about 2000 rpm all of the time in order to keep it from lugging. That pretty much implies a gas mileage figure of ~10 mpg. The cam, rear end ratio and head configuration you pick will have the greatest effect on your mileage goals.
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