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All early Chevrolet Corvette factory exhaust manifolds are cast iron. Since the manifolds are cast, the actual casting number and date are raised above the actual surface of the part. Most casting numbers are visible when the manifold is installed on the engine. The casting number location and casting date location will vary from year to year and sometimes manifold to manifold. Some manifolds will not carry a casting date at all. Small block manifolds do not carry a year designation. 2" outlet small block manifolds will have a casting date, while most 2 1/2" outlet manifolds do not have a casting date. There were two types of manifolds being cast for Corvette, the first from the Flint, Michigan built engines, which were cast in Saginaw, Michigan. All small block Corvettes used these manifolds. The second type was cast at the Tonawanda Engine plant and all Corvette big block engines used these manifolds. The big block manifolds will be discussed and identified in the second installment of this article.

The camshaft is the one part of the internal combustion engine, which has the most bearing on how that engine will operate. The basic function of the camshaft is to control the timing, the length, the speed, and the height of the intake and exhaust valve openings inside the cylinder head. The camshaft in all Chevrolet engines is located within its own bearing chamber below the cylinder head face and above the oil pan rails. There have been some minor changes in rear camshaft bearing face design, but for the most part the camshaft has remained the same from 1955-82. It is important to verify which type of block, rear bearing face and camshaft bearing you need before you invest in a camshaft.

This article will focus on the different types of Corvette trim Tags that were used from 1955-1982. There were numerous changes over that period and we hope to cover the majority of those changes in this article. We will cover the rear differentials in brief detail to point out the specific differences that exist.

The 1969 Mustang used six different tire types, with the types based upon the original engine equipment that was ordered on each particular car. The base 6-cylinder and 302 cars used a C78x14” tire as standard equipment. An E78x14” tire could be ordered optionally on any of the 6-cylinder or 302 cars, while also being standard equipment on the 351 and 390 equipped cars. The 302, 351 and 390 equipped cars could also be ordered with an optional E70x14” Wide Oval. These E70x14” Wide Oval tires were also only available optionally on the 428 and GT Equipment Group cars. An optional F70x14” Wide Oval was again offered for 1969, this time as optional equipment on the 302, 351,390,428 and GT Equipment Group cars. The FR70x14” Wide Oval Radial ply tires made their second appearance in 1969 as optional equipment on the 302, 351,390,428 and GT Equipment Group cars. The 185-R14” Radial ply was now discontinued and a new F70x14” Fiberglas belted tire was now mandatory equipment on the 428 Cobra Jet cars. The last tire that was available on the 1969 Mustang was the F60x15” tire, which was the standard and only tire available on the Boss 302 and Boss 429 cars.