I built a 461 in 2007 and used CC HR lifters and the OF cam no issues at all, still running great. Got the revised version HR lifters in 2017 for my brother's 464 and they were NG, neither were the 2019 replacements. Supposed to be better with the revised oil band position.
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1967 Firechicken, 499", Edl heads, 262/ [email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule.
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