|
|
|
|
Original Message
|
| C6AE-R was common on all FEs in 1966-67. |
| By Dave Shoe - 11/14/2001 12:16:55 PM; IP 12.2.11.131 |
Federal emissions regulations changed FE heads and intakes a whole bunch in 1966. Features for adapring the FE head to fit the Fairlane engine bay were also added to all FE heads this year.
The small-runner C7AE-A appears to be the most common head in 1967, but the large-runner C6AE-R appears to be the second place finisher.
Other emissions-era small runner castings which were common in 1966-67 were the C6AE-J earlier in the 1966 year, C6AE-L (if I remember this suffix right) in mid-1966, and C6AE-U in later 1966 and early 1967.
By the second round of federal emissions changes at the start of 1968, Ford decided the C8AE-H head would replace all previous emissions castings. The D2TE-AA casting of 1972 was just a rehash of the C8AE-H head, but the exhaust seats were "induction hardened" (like a camshaft lobe is hardened) and the foundry was moved to the new MCC facility.
As for the valve sizes, all non-MR/HR/TP/SOHC FE head castings are cast to fit 2.02/2.03" intakes and 1.55/1.56" exhaust valves. Even the CJ head is cast for this valve size, however the CJ head gets an extra machining step in production which dresses-out the valve throat to fit the larger 2.08/2.09" intake and 1.65/1.66" exhaust valves.
The C7AE-A is NOT like the 427 marine heads. Marine heads have the old "large runner" heads which have the 1966 thermactor, exhaust manifold, and AR mods.
The C6AE-R head is like 427 marine heads of 1966-later. On my two 427 marine engines, I got a mix of C6TE and C7JE castings (I forget the suffixes right now) which were identical to some C6AE-R castings I had. Note that I've got several C6AE-R castings and some are slightly different than other C6AE-Rs, so exact comparison between a C6AE-R casting and another casting can be a bit confusing.
Shoe.
|
|
|
This thread, so far...
|
|
|
|
Post A Response
|
|
|
|
|
|