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Old 10-18-2015, 09:48 AM
Frank Reiner Frank Reiner is offline
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Join Date: Feb 2011
Location: Modesto CA
Posts: 4,068
Rh:

To quickly distinguish Cal. from Fed., look at the exhaust manifolds. If Fed., the manifolds will consist of two sets of three smoothly curved cast iron pipes. If Cal., there will be two large cylindrical cast iron chambers; they are thermal reactors, the forerunners of catalytic converters. The engine will also be equipped with an air pump, aka smog pump, which supplies air to the reactors.

If yours is a Fed. car, the carburetor is the simplest of three variations that were used over the '73-'76 run of carbureted engines. I have one of that that variation in rebuild now. All were subject to warping, in varying degrees.
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