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Old 08-13-2012, 09:27 PM
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You could check gross clearance from the top, bring the piston to TDC, get an in-car valve spring compressor, (cheap on the "Fix It" display at parts houses) remove the keeper and spring, and see how far the valve drops before hitting the piston, do the math with your cam spec card for actual lift at the valve if you changed rocker ratios. My guess is with .480 lift and valve reliefs, you won't have any problems.
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