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Yup. They're the same. By Dave Shoe - 11/12/2001 9:22:16 AM; IP 216.243.158.38 FE non-racing heads from mid-1958 thru the end of 1965 are all basically identical. Early 1958 heads also have the same runners, but the chambers are machined. The C6AE-R and CJ heads retained these runners, with the exception of Thermactor emissions bosses which were added (and sometimes drilled) in the roof of the exhaust runner. The C6AE-R (as well as some industrial/truck/marine heads) got an additional AR lip, but that's a different story. Otherwise 1966 was a big-change year for the FE head, as emissions regulations forced efficient "high-velocity" runners (also known as "small runners") into most of the FE's being produced from then-on. Shoe.

This thread, so far...

Skip Navigation Links.  do early 390 2bbl and 4bbl heads have the same -- mikeb, 11/10/2001  RE: do early 390 2bbl and 4bbl heads have the same -- Mike McQuesten, 11/11/2001  RE: do early 390 2bbl and 4bbl heads have the same -- mikeb, 11/11/2001 Yup. They're the same. -- Dave Shoe, 11/12/2001  Yes, that is right.......... -- Ed, 11/12/2001

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