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By Kahuna - 10 Years Ago
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A friend said he has a 292 running truck engine that I can have.
He also said he has a 312 engine complete, but in pieces available.
I'm interested in the heads from the 312.
What would be best?
Any numbers, etc would be appresiated
Thanks Jim
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By 62bigwindow - 10 Years Ago
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As far as heads go look for ecz-g. They may even be posted. If it were me I would grab all of it and build a bad ass stroker to embarrass the small block scrubby crowd.
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By Ted - 10 Years Ago
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There’s really no such thing as a 312 specific cylinder heads as the 292 and 312 typically shared the same heads. But the heads do vary between the years with 1957-59 being the pinnacle in cylinder head development. The big intake valve heads would be ‘ECZ-G’, ‘113’, and ‘B9AE’ for the smaller combustion chambers. The ’B9TE’ and ‘417’ heads are also big valve but the combustion chambers are much larger which necessitates using pistons with 10+cc domes to get the compression ratio back to the same as the smaller chambered heads. The earlier 1956 ‘ECZ-C’ heads would have the intermediate sized intake valves. The later model 312 marine engines seem to be fitted with whatever cylinder was available at the time of manufacture.
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