I just had a few mod's done at the shop about 3 weeks ago (SLP LT's w/ORP's TNT F1 Kit, MSD Wires, NGK TR6's, BMR SFC's, STB and LCA's, 160% Stat Holley LS6 Intake). About a week after I got it back it started making a ticking noise that sounds to me like a exaust leak. I can only hear it at idle but my exaust is so loud it might still be there when I accelerate and I just can't hear it. What could this be? Does a lifter tick or bent push rod sound like an exaust leak in the LS1's?

Thanks

 

Did you use restrictor plates on the AIR tubes off the headers? Could be the AIR check valve fluttering...

Shane