A 1964 Chevelle Super Sport with a COMP Thumpr cam, Ultra-Gold roller rockers, and clear valve covers that put the entire valvetrain on display — this is what a properly executed small-block looks like when the builder decides to make the engine compartment as interesting as the car itself. The first-year Chevelle body combined with a quality COMP valvetrain package makes for a combination that rewards a close look.
The 1964 Chevelle arrived as GM’s answer to the market the Pontiac GTO was about to define — a mid-size platform with enough room under the hood for serious engine options and enough body to carry the visual language of a car that meant business on the street. This particular Super Sport goes considerably beyond factory specification in ways that are visible from the first frame, most notably with the all-COMP valvetrain setup and the clear valve covers that turn the engine into its own display case. If you are going to build a show-quality small-block, you might as well let people see exactly what you built.
The COMP Cams Build Sheet Under Glass
The specification list reads like a COMP Cams catalog brought to life: the Thumpr camshaft that gives the engine its distinctive lopey idle, Ultra-Gold roller rocker arms, COMP lifters and pushrods, a full roller timing chain, and clear covers that expose all of it to anyone who opens the hood. A Thumpr cam is a specific camshaft profile designed for street performance with enough idle character to make the car sound like it means something before it leaves the driveway — the name refers to the exhaust note it produces, a rhythmic, loping beat that traditional muscle car enthusiasts recognize immediately.
Why the 350 Small-Block Still Rules the Street
The Chevrolet 350 small-block in this application represents the engine that underpins an enormous share of American automotive performance history. Produced from 1967 onward, the 350 cubic inch displacement hit a sweet spot between tractable street manners and meaningful performance potential that made it the foundation for an almost uncountable number of builds over the following decades. With a quality camshaft, matched valvetrain components, and proper supporting work, a 350 can make numbers that embarrass engines twice its displacement.
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The 1964 Chevelle Super Sport body carries its own significance as a first-year example of a nameplate that would go on to produce some of the most celebrated cars of the muscle car era, making this particular combination of rare body and quality engine build especially worthwhile.
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