HAS ANYBODY EVER SWAPPED OUT A SMALL BLOCK TO A BIG BLOCK IN A 87 CHEVY 1500 SHORT BED,THE BIG BLOCK (454)CAME OUT OF A 87SUBURBAN,I GOT ALL THE WIRING HARNESS AND ECM,MY WHOLE PROJECTIVE IS TO MAKE IT LOOK FACTORY,I GOING TO BUILD THE BIG BLOCK MAYBE 30 OVER WITH A SMALL CAM JUST TO GIVE A LITTLE SOUND,I WILL NEED TO FIND SOME INFO ON WHAT SIZE CAM I CAN RUN WITH OUT CHANGING ANY CHIPS IN THE ECM.
