Since you're on the topic of roller conversions, I have a question. What's the difference in an HO 302 with a roller cam, and a Non-HO 302 with a flat tappet cam, other than the tapped threads for the spider. Are the slots for the lifters taller with the HO's. I didn't know of the question on the shorter lifter need was because you're doing a 351, or if that was a roller conversion question. I had a friend ask me the difference the other day, and I wasn't sure what to tell him.
Dave
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