well, one pontiac 400 cylinder is about 50 cubes, and so is a 292 cyl.
The dual pattern cam tends to aid in manifolding/porting faults which you could say both D-port Pontiacs and 194-292 chevy sixes have.
the pontiac and chevy sixes are more similar than either is to the small block chevy chamber-why not "borrow" all you can from the other engine "camps". Jim Hand has made a lifetime out of researching every thing about Pontiac engines and living with, and adjusting to their "faults". A lot of his recommendations make for big torque numbers over their limited rpm ranges-neither of which are much over 6000.
