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Old 01-09-2007, 10:45 PM
TimG TimG is offline
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Default Re: need help with 1969 427 decoding..

I believe the casting states "hi perf" and "pass". This means 427 in two or four bolt configuration and not a truck engine. The two and four bolt were cast the same way and configured differently with two and four bolt mains and a larger oil plug for oil cooling on the four bolt blocks.
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