I had an L78 cam in a '66 360 hp 396 4 speed Beaumont. It worked fine and got excellent gas mileage as well. In our L78s and especially the L72, this cam is excellent for the street. The cam lift specs include the valve lash, so you are actually running slightly under .500" lift. If you plan on turning 6K plus rpm, make sure that you install better than stock valve springs or you run a good chance of dropping a valve sooner or later. This caused the demise of most L78 and L72 engines, including the original engine in our L78 Chevelle.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now.
