Lifter bore flaw
That makes sense.
So is the issue that the Poncho lifter bores can "crack" with high RPM and abuse? Is it a limitation on RPM or just a longevity/abuse thing?
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1974 Lemans Sportecoupe GT (daily driver)
.030 over 354, #47 heads (84cc), Lunati voodoo 700 camshaft (207/213 @ .050), logs, 2.5 duals, X-pipe and Dynomax super turbo mufflers, 3.08 rear
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