|
|
|
|
Original Message
|
| Your C7OE heads are 427 racing heads. |
| By Dave Shoe - 09/03/2001 12:38:35 AM; IP 216.243.158.102 |
I don't have my cross-references handy, but I strongly suspect you are referring to casting numbers on 427 MR or TP heads, in part because racing heads did not get any emissions features cast into them, and in part because the only FE heads with C70E cast into them were 427 racing heads, not available on the production line.
There is much confusion about generic FE head casting numbers because most texts erroneously mix together part numbers (-6049-) and casting numbers (-6090-) without distinguishing between them. Part numbers CANNOT be found anywhere on the heads, and are useless beyond the Engine Assembly Plant or factory service counter.
Casting number options for 1967 FE car and light truck engines (except 427s) are C6AE-R, C6AE-U, and C7AE-A, the latter two heads being basically identical castings. Among these three casting numbers, Ford offered numerous part numbers, some with Thermactor holes drilled, some with different valve springs, some with different exhaust manifold drill patterns. Note that all of these heads got Thermactor bosses cast in (often times not drilled), and all got the eight extra exhaust manifold bosses which allowed drilling for 8-bolt or 14 bolt patterns.
There is a remote chance you can find C6AE-J or C6AE-L casting numbers, but these were common heads in early in the 1966 model year, and are not likely to be found in 1967.
Ford did not put special heads on 390GT engines, however 390GT engines did get the stiffer valve springs installed on the heads, as well as the 14-hole drill pattern. Only California 390GTs got Thermactor in 1966-67, the 49 state 390GTs did not. By 1968 (the last year of the 390GT engine), all 50-state 390GT engines got Thermactor, due to more stringent emissions legislation.
Also, the 1968-71 model years standardized on the C8AE-H casting number for all engines except 427s and CJs. Only a few early 1968 cars got C7AE-A heads. In 1972-76 the D2TE-AA casting was the only one you could find, though some C8s likely made it into the early 1972 model year (I suspect these would have required induction-hardened exhaust seats to meet federal regulations). I presently suspect that all D2TE-AA heads were cast at the brand new MCC casting facility, which came on-line in September of 1971 with the first of it's five mold lines running.
Shoe. |
|
|
This thread, so far...
|
|
|
|
Post A Response
|
|
|
|
|
|