Quote:
Originally Posted by tinmansunbeam
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I heard the sideoiler upgrade to the FE was developed as part of the SOHC program (the SOHC design effort did overlap the alum 390). Regardless of which project it was part of, the Ford engineers obviously thought incorporating this new sideoiler concept into the alum 390 would be a good opportunity to put the idea into action. As a result, the alum 390 was the first sideoiler FE.
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I would not interpret that to mean that the aluminum 390 was a sohc motor.
The heads on the sohc motor are much bigger than the heads I've seen on the pictures of the aluminum 390.