Joe Soucy

I got 383 lt1 with the 280xfi cam. car hasnt been tuned yet but idles like its only ruuning on 6 or 7 cylinders.. has brand new plugs wires all new sensors, new coil and icm.. everything. Opti is about a year old and was fine when i took it off and put it back on. Any ideas? car also has brand new fuel pump and injectors. its getting fuel, spark and has compression. Firing order is also correct.. ive checked it 3 times.

transamcustomz

iTrader: (8)

Answered it yourself

Joe Soucy

what I meant to say was that car was previously tuned but hasn’t been retuned for the new stall, head porting, Intake porting and new valvetrain.

Gangly

Again, answered you own question. Those items in combination require significant tuning, especially with the introduction of a cam.