I HAVE A 87 IROC 350 TPI AND IT SEEMS LIKE IT IS MISSING POWER BAD WELL IT HAD A BAD MISS IN IT SO I CHANGED THE PLUGS WIRES CAP ROTOR AND COIL AND IT WENT AWAY FOR ABOUT 10 MINS IT RAN FINE THEN IT STARTED RUNNING LIKE CRAP AGAIN BUT ITS NOT MISSING LIKE BEFORE WHAT COULD IT BE NO WIRES ARE CROSSED BECAUSE IT RAN REAL GOOD FOR 10 MINS OR SO ALSO IT SMELLS LIKE GAS AND IT IT SOMEHOW SPRAYING OIL THROUGH THE VALVE COVER LIKE WHERE THE PVC VALVE IS AND THE OTHER HOOK UP WHAT COULD IT BE?? ALSO I WAS ALLWAYS TOLD THAT THE GAP FOR SPARK PLUGS WERE .035 FOR A 350 WHAT IS THE CORRECT GAP?ALSO NOW MY TACH IS JUMPING FROM LIKE 1500RPMS TO LIKE 1700-1600 JUST KINDA BOUNCING AROUND BUT IT NEVER DID THAT BEFORE NOW IT DOES CONSTANTLY WHILE IM ACCELERATING THANKS

 

try pressing the cap lock button. there's a good chance people aren't reading what you typed, i know i didn't.

 

I read it. Caps killed me however.

.035'' is correct for a 350 engine. Most anyways.

Is it idling at 1500 rpm? If so turn it down some. That isn't going to help you right now but it definetly needs to be done.