If my 2 bolt LT1 is going to get converted to a 4 bolt splayed or 4 bolt straight caps, is it necessary to get all the caps done including the rear and front or do I just need to do the center caps done in order for my engine to handle at least 650-700 flywheel horsepower? Thanks for any help.

 

Just the center 3 is fine. If you want to do the rear cap, i belive program makes one for the rear. But most people including myself that will be running that type of power have the center 3 splayed or stright 4 bolt.