Folks I got a 93 siverado z71 with the 350 tbi. I just recently changed the intake manifold gasket due to the old one leaking. After I get it done I took it for a spin an now everytime I take off from a dead stop and during speeds of around 55 it will hesitate for a moment when I accelerate. I dont remember it doing this before. When I'm driving down the road at 40to 50 mph and give it the gas it will hesitate and then take off what could be the problem.