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Kirkham Motorsports

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Old 11-25-2017, 05:45 PM
Phx Mike's Avatar
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Join Date: Apr 2016
Location: Phoenix, AZ
Cobra Make, Engine: Ex owner of a polished Kirkham 427 S/C. Now Cobra-less and driving a mid-engine German hot rod.
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By the way on my aluminum edelbrocks my static compression ratio is just about 10:1 and it just tolerates 91 octane. Really prefers 92-93. This is operating at low altitude (1100 ft here in Phx). At higher altitude you can go a little higher but in general I would stay at or below 10:1 esp if you have a mild cam.
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