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Old 03-16-2024, 12:36 PM
JLMounce JLMounce is offline
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Butler just put out a pretty detailed bulletin on these. "Best" at least according to their recent information has more to do with your lifter bore height and cam profile of your specific block vs a generic statement of "x part is the best."

They all have slightly differing oil band heights and you want the highest quality lifter that matches what your block wants for oil band height.

https://butlerperformance.com/n-1349...formation.html

If the Johnsons are the needed fit for your application, that's what I'd go with.

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1969 Pontiac Firebird