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By paul2748 - 15 Years Ago
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I was helping a friend of mine with his 57 TBird, "C" model (292). We had the intake off and noticed that the heads had the casting number ECZ-F. Anybody hear of these. What is the original application? Big valves or not? Thanks for any info.
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By Teros292 - 15 Years Ago
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This is what my parts books and casting number books says:
Years
1957
Models & Cubic inch
A (with S/T & O/D) 292
S (with O/D) 312
Part #
B7A 6049-D
Cast #
ECZ 6090 F
I have collected them to http://www.y-block.info
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By Ted - 15 Years Ago
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Is the date code obvious on the ECZ-F heads? Try looking for the date code either on the exhaust side of the heads or under the valve cover. The ECZ-F heads do have the same valve sizes as the ECZ-G heads but it’s unknown to myself if they are posted or unposted or actually came both ways as is the case with the G heads. Also not known is the combustion chamber cc’s or volume so it would be some good information if these are measured if the opportunity arises. Gut feel says the F head has larger combustion chamber volumes than the G head based on its standard transmission applications.
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By paul2748 - 15 Years Ago
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Thanks - I'm not sure I can get the date code as its now buttoned up.
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