When my shop was in California we did two years of cam testing related to 360/388 cu.in engines on alky.we had a racer at a local track that thought he would get on up on local engine builders and he bought a $30,000.00 engine that was supposed to be designed for alky from a well known cup engine builder. after three weeks of not making the main he brought the engine to me to dyno. the engine had decent power @ 7500rpm but no torque @ 4000. his cam was 264/276 we changed cams to one of the alky grinds we had in the shop 258/260 and made the same top end power with a 100 lb torque increase at 4000 Rpm. bottom line is alky loves comp ratio but not long ex duration.Bill