Got an engine noise question. The last couple of times I have started my GT from cold, there is a clattering sort of sound coming from the top of the motor. Sounds like its coming from the SC. No abnormal valve train noises, etc. It goes away in matter of minutes, once the motor warms up. No loss of boost. No fluid leaking anywhere. Car runs great. It's different than belt squeal and slippage in cold weather. I have a stock blower and pulley. Car has 18K miles. A mechanic buddy of mine thinks its some end play in the supercharger that tightens up after warm up. Anybody seen or experienced this. BTW who makes our stock SC's, and where do they go for repair if needed? Is this something an SVT mechanic can handle? Shadowman, Kendall, Torrie, anyone? Thanks, AC