Quote:
Originally Posted by Alan Roehrich
The piston manufacturer must submit samples to NHRA for approval, and NHRA may require an unmodified OEM piston as a control sample, if they do not already have one.
I've been through the piston approval process, NHRA put us, JE and me, through the wringer, for 6-9 months.
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mind sharing the story?
might be handy to know what to do and what NOT to...