MSO documentation

[PhilS]

I'm trying to figure out the meaning of the horsepower (SAE) rating found on MSOs. My theory is that the rating is max built to spec per cylinder. I noticed on the Daytona Yellow COPO Chevelle at B-J the number was 55. On a Camaro bought by a friend the number is 53.6. This car is supposedly a 375 hp car. I think Zs are 48. Kurt and Daniel have been trying to help but Kurt says an SS350 is something like 51 which might blow the theory. Charley thinks someone has already figured this out but doesn't remember who. I would like to see more MSOs to get a better understanding. The number on a new Vette is around 51. I think a Viper is in the same range. If anyone has an MSO for a 67-69 Camaro I'd appreciate your info or thoughts.

Thanks