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Old 02-20-2015, 04:04 PM
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DanEC DanEC is offline
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Join Date: Apr 2009
Location: Little Rock area, AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
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Quote:
Originally Posted by marcocsx3121 View Post
Based on actual, period test results of 427 Cobras (including my own CSX 3121): at 2700 pounds including driver, fuel, etc, a typical trap speed of 118 mph calculates to 355 hp.
Assuming the Ford Engineering dyno results of 425 SAE gross flywheel HP was accurate for the early LR, dual quad intake 427s (no reason to think otherwise), by the time alternator, air cleaners, log-type exhaust manifolds, and mufflers were added - 355 net hp at the flywheel seems pretty reasonable to me.
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