RI Chevy guy
OBS Enthusiast
A cam swap makes a world of difference in this engine, comp cams makes several upgrades for these (as does Lunati, but I have not used them). The factory cams in these made them quite weak, typically mated up with 3.08:1 gearing made for a less than desirable driving experience. Bumping up the cam a notch improves low end and gas milage without having to re-tune the computer, going to the next step really wakes this engine up but requires the ecm to be re- tuned. If, like me, you have the dreaded 3.08 gears, changing up the gearing in the back makes a world of difference (I went with 3.73)