help me build a pros and cons list for my 454 vs LS1

[carpoor]

Unknow adjustments for the rockers

Why do you have this listed as a con? Adjusting rockers is cake.

As for a pro - cheap power to be had from the 454. LS engines are great, but they look a little lost in the engine bay. Are you building it to race? Or more of a cruiser? IMHO - you can't go wrong with either one.

I made those statements having had both. In the end, you have to please yourself.