[glenncof]

I've replaced my 1997 5.7l (350 ci) a couple times. The key things I remember/suggest is:
1) Carefully look at serpentine drive belt so you can reinstall. There should be a diagram under hood. 3/8" breaker bar to remove tensioner tension.
2) The fan/drive needs to be removed. I think I used a large adjustable and a rubber strap wrench (to hold the pulley). Careful when reinstalling not to cross tread.
3) Clean mating surfaces completely. I used single edge razor blade and/or exato knife. I put Permatex Water Pump gasket compound on gasket, pump side only.
4) I used the four bolts to hold gaskets in place while installing. This was the tricky part as gaskets tend to slide around. Keep pulley off while doing this to minimize weight and make it easier to hold/position pump with single hand.