well you dont want to pull the motor on that to get it rubuilt but as of what ur trying to do its about the only way it should cost you almost 2000 to get it rebuilt bored 60over cam and just about everything else i know this because mybro has a 94 s10blazer with a 4.3 vortec in it he got his done and it cost him around 2000 at first but then ur gonna need other parts because stock wont really work on it so 100 shot is about the best way for you to go if you dont like the hassel of a rebuild