I'm planning a +.060 292" with 'lump ports' & a mild cam for pulling trailers.
From what I see a 550/600 CFM Holly would be the one, or slightly less than the the 650.
Is there a model (Holly) that has small primaries, as those will be the main use portion. This rig will just need (++ CFM) for going on freeway or keeping up on hills.
