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Original Message
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| All 1965-earlier FEs have the larger ports. |
| By Dave Shoe - 09/04/2003 5:25:59 PM; IP 12.2.11.131 |
The fist of the small port heads showed up in 1966, despite whatthe books might have you thinking. About 3/4 of production for 1966-67 got small "velocity" runners to help emissions and low-end response. About 99.9% of FEs got small runner heads from 1968-70, and all got small runner heads from 1971-on.
The C6AE-R head was a "transition head available in about 1/4 of all FEs in 1966 and 1967, and it kept the old ports and runners, but added thermactor emissions bosses (usually undrilled), and also revised exhaust manifold bosses (for drilling if it was to be used in a Fairlane/Mustang application).
The intake you have is only unique in that it's the first year the oil filler was absent from the manifold and the last year the runners were large. These large runner iron manifolds are identical, whether 2V or 4V, and were only slightly modified in 1966-72 when a small portion of the runner nearest the head was tapered down a little and a "T" was slapped onto the #1 runner, and when EGR was added for 1973-76. It's not a performance intake at all - mainly a smooth runner. For performance there are a whole slew of intakes to choose from.
Shoe. |
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This thread, so far...
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