Quote:
Originally Posted by mysticmissle
bad geometry and push rod flex. what head and rocker ratio? guide plates correct? Is this a new combo or making changes?
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69 Ram air iv heads, 1.5 ratio exhaust 1.65 intake. No guide plates, t & d shaft rockers. Only change was 1.65 rockers on the intake. Exhaust is what broke. Pushrods have about 100 passes on them. I've never seen one break like this without being bent at all.