[ERA Chas]

Greg; I installed Shelby's myself on my SO iron block. I bought Stage IIcnc heads and they were everything M. Lefevers said they'd be. I checked piston-to-valve, valve-to-wall and cc'd each chamber. All chambers were within 1.5 cc's of each other and absolutly no clearance probs. on any specs., and my cam is a 613"-633". My Harland Sharp rockers, B&B pushrods, FPP shafts and stands all work perfectly. Took 44 lbs. out of my ERA over my old iron med. risers. Very noticible perfomance gain. I'm very pleased with their product.