Thread: Cast iron Genesis block problems!
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Old 05-06-2007, 07:06 AM
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Join Date: Oct 2002
Location: Fairfield, CT
Cobra Make, Engine: HM-2027 / 427 SO
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I beleive the main reason the Ford C5 casting number was added was to make the blocks NHRA stock and SS legal. The C5AE-H casting number was original to the sideoiler. Thus accepted as a legal replacement/upgrade. Then when Ford added them to the FMS catalog they were assigned a new Ford part number. I'm not sure where either side stands now. But that's part of the story as I understand it. I'm sure there is more to it...

G.
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