I have a 355 small-block Chevy in my 1971 Nova and just swapped on a set of used aluminum heads. I was told the heads have 180cc intake runners, 64cc chambers, 65cc exhaust ports, and 2.02/1.60-inch ...

Swapping in a new HEI, or even just pulling one out to service, is quite simple. All it requires is basic handtools and some background info on how the distributor works in conjunction with the engine ...