I have a 94, vortec and it has no power at all. what it does is when you hit the gas too hard it spits and sputters but if you back off of the throttle it will slowly pull. If you hit a hill its like you hit the gas too hard again. but at idle its complety fine. I cinda think its getting too much fuel. Maybe I'll try pulling the intake man. and see if there is puddleing.
Any Other suggestions would be greatly appriciated, just email me at snipped-for-privacy@yahoo.com