Ok let me start off by saying i am a mustang nut but not a chevy HATER. i am new to the site and here for my mom and her 95 blazer that she loves to death i no nothing of a 4.3 vortec but when it was running good it had *****. LOL but here we go it has 123.000 miles on it i put new plugs new wires cap in bug and still out the drive way an try to go misses and pops put the gas down it will go but just has no power dont want to get up to 35 miles an hour and it was doing this before the new parts no service light on. open to hear what u guys have to say because she does not want to trade it in like i said she loves this thing. thanks dwayne