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Original Message
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| It's a 1966 to early '70s intake. |
| By Dave Shoe - 07/28/2001 1:56:43 PM; IP 216.243.158.180 |
The only year of major changes for the FE was 1966. This was due both new emissions regulations, and also to the space constraints of the unibody design.
The "S" intake means it's an emissions type "equal runner" intake, a brand new design for 1966. It came in both two and 4 barrel forms, and seems to have been used on most FEs from 1966-1971. I believe this might be the smoothest running intake for the FE.
Also born in 1966 was the "T" manifold, also available in 2V or 4V forms. It was based on the pre-emissions iron intake, but it had the runners tapered down to match the new-for-1966 emissions heads.
Ford engine plant machinists used these two codes to identify the intake manifold when assembling engines.
Just as Ford opened the 1966 year with two head offerings (The all-new C6AE-J, and revised older design C6AE-R), I think Ford offered both intakes "just to be safe".
I haven't yet figured out what percentage of vehicles got one or the other intake, but it seems the "S" intake was slightly more common on cars from 1966-1971, and the "T" was found a bit more often in trucks and industrial apps from 1966-1976.
Both types of intakes are quite common.
All JMO,
Shoe. |
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