Cams, Cranks, Connecting Rods, billet steel this-n-that.
The billit cranks are far above most others out there. One reason is he has billit hammer the was specifically made for him and his needs.
He will run untempered billit steel through it and make it even smaller. smaller == denser, more closely packed. It is partially why his stuff is just so damn good, he doesn't leave well enough alone.
Edelbrock had and still has a ways to catch up. Though Edelbrock has a much larger empire and domain of products. Quantity makes business big.