'66 Dodge D-Dart at Mecum auction

[dart4forte]

Originally Posted by Paul Ceasrine

Alan,
Good hunting there. Headers in trunk, just like the 67 R/O Plymouth and
67 W/O Dodge race packages. Always had a question about those
Doug Headers with the smaller collector sizes. NHRA limited collector sizes, they could not exceed the size of the largest diameter of the exhaust system (I think 2 3/4" was the opening in that large "Y" pipe) or a tad smaller. For stock classes, Super Stock could have openings up to
3 1/2".
The cast iron intakes with the 1 11/16" openings for primary and secondary were found on marine applications, as they all pretty much utilized Holley carburetors. Dig up Chrysler Marine info, you'll find a bunch of stuff. They were really leaps and bounds ahead of the small-block drag race guys at Chrysler. In 68', many of the 318 marine engines had the larger-bore cast iron intakes on the engines, and better camshafts, thanks to Camcraft, out of Easton, Maryland.
Paul, (Bigger valve size, that one I have got to look into. As for the
shifter, I think it was a 1966 safety issue. Requiring a positive lock-out on the reverse gear and/or indicator on all cars, Protecting the factory from liability claims.)

Paul,

Buddy of mine has one of those marine intakes with the 1 11/16" bores at the last swap meet we wereselling at. I almost fell over myself when I saw the intake unloaded and that he was selling it. First thing that caught my eye was those large bores and I thought I had scored. Disappointed when I checked the part number.