"... Maybe the ones that lack the bottom end power weren't tuned properly(Carb and timing), geared properly, not enough converter, or too low compression? I sure hope the 9.8-1 RA III 400 that we are building has good tire burning low end..."
There are always Rhoads lifters, to add some low end. But, that makes the Summit cam, less of a bargain price.
Since the Rhoads lifter price increase, a decent cam with more bottom end, plus regular lifters, can actually be cheaper than a Summit cam, with Rhoads lifters.
https://www.summitracing.com/search/...ily/pontiac-v8
There are options.