Anyone use these for over 500 lift cam

frosty_the_punk said

I've seen something very similar to these used on heads using longer t/a or W2 length valves with .650"+ valve lift on the intake.

I wouldn't think they'd be necessary for sub .550" of lift

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But for the guys like me who have, say, econo W2 heads, I'm limited to a .550" lift camshaft due to the short valves etc. if these things work, I don't have to replace what I have or do extensive machine work to get rid of the cast in pedestals and just shim up what I need.

I'm going to look into this!