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#61974 12/08/10 12:34 AM
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What years did chevy heads have 14mm 3/4" reach, Gasket Style plugs, without the smog pump provision on the exhaust port.

Thanks, Harry


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Harry,
I believe from the 1st ones made thru around 1970.


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dunno about the plug size, but the first smog pumps on federal engines in 1968 (sorry about late post-Polish you know)


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