Take any cam for example, mate it to a small 2 barrel, a restrictive single exhaust, untouched heads, and low compression and you'll end up with weaksauce power any way you slice it, when compared to other components that would allow the engine to perform no matter which cam was used. I'll spare you guys all the boring details of each cam, as I've listed them elsewhere on this website numerous times before.Īs far as different power ratings (and has been previously mentioned), other aspects of the engine can affect the power output greatly. The Melling sbc-5 is similar to the Federal Mogul cs647 as it is listed as the "GS" cam for use with '68-'74 engines, and the smaller sbc-11 cam for use with '75+ engines, though they are interchangeable. There used to be another one made by Federal Mogul, but as far as I know, it's discontinued.
To the best of my knowledge, there are three possible OEM replica cam replacement choices available: one from Federal Mogul listed as cs647, and two from Melling listed as sbc-5 and sbc-11.
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