It has a little more duration and lift than the regular 235 cam, without causing the rough idle and low intake manifold vacuum associated with more radical cam grinds such as the popular "Bulldog" cam that some of the resto-ripoff places sell. Back before the supply of new camshaft cores dried up, the Melling CCS-1 cam, and the Elgin E-323S cam were both very similar to the cam that GM installed in the 261 engine. Those cams are almost impossible to find new, so a reground cam is just about the only way to go. Used lifters can also be resurfaced to prevent damage to a new or reground cam.
Jerry
Would there be a measurable gain in performance with this 235 Corvette/261 cam in a 54 235 Thriftmaster truck engine? The Corvette 235 engine was a very different setup, with three 1V Carter YH side draft carburetors on a triple intake manifold and a split exhaust manifold.
If you have performance data to compare, would be interesting to see it.
