after $2000 dollar machine shop bill and countless other parts car runs but has fouled out 2 sets of plugs within 50 miles with no power whats so ever seems to have weak spark and i cant figure out why any ideas are very welcome.. please and thank you

 

whats all done to the motor, and for 2000 bucks that better have forged pistons a custom cam and lots of port work

 

heads cut blocks decked port polished forged pistons bored 60 over blanced rotating assembly machine crank 460 lift cam 1 to 6 rockers pacesetter headers theres more that i cant think of right now lol

 

Tuning?

 

need cam specs being a speed density system if the cam dosent pull the same vacum as stock the ecm will add more fuel.also make sure the map sensor is hooked up and the vacum line is also connected. if it isnt the ecm will see no vacum and try to add the same amount of fuel it would at wot

r u using stock injectors?

 

Could be weak spark from bad IC, or perhaps you need diff heat range plugs, and running too rich could also cause the problem.