Stephen68

Hello, can someone please give me some input and suggestions....Heres the deal. The 95 lt4/lt1 has just been rebuilt. New valve seals, pistons, crank, etc. CC503 cam, Pace Setter long tubes. Other than the heads being reworked and bigger springs for the cc503 and long tube headers the motor is stock. The car starts good and runs/idles good but has this awful gas fume exhaust smoke coming from it. No SES codes and temp runs normal. It just smokes really bad, whether just idling or when the fuel is pushed. I have checked all the sensors and replaced the o2's with Delco. Also, the car seems to have a tiny bit of a miss when i hold the rpm around 2k steady, i can feel it in the steering wheel. All plugs and wires are new also with no pinched wires. Can anyone please give me some suggestions as to what it may be....The more you push the gas pedal, the more smoke......

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Stephen68

Actually i just got to thinking...I have deleted the smog and EGR plus i have no tune with this new cam and bolt on's.....Could a tune be whats causing this problem or rather a lack of a tune?

RUDEDOG

Yes you must have it tuned for that cam

Stephen68

Thanks RUDEDOG, That is the same conclusion I have also come to after doing a lot of research...Who would you suggest for a mail order tune?

RUDEDOG

PCM For Less is who I used. No compaints. The car runs very good.