The Mustang Forum for Track & Racing Enthusiasts

Taking your Mustang to an open track/HPDE event for the first time? Do you race competitively? This forum is for you! Log in to remove most ads.

  • Welcome to the Ford Mustang forum built for owners of the Mustang GT350, BOSS 302, GT500, and all other S550, S197, SN95, Fox Body and older Mustangs set up for open track days, road racing, and/or autocross. Join our forum, interact with others, share your build, and help us strengthen this community!

Piston Slapping

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.


Some say he has a tattoo of his face on his face.
I just got back from a cruise-in where a gentleman I've talked to a few times with a '12 Boss said his car has this problem. He said he took it into two different dealerships and both acknowledged it was happening on #7. He also said this was a known issue but that there was nothing Ford could do about it and it wasn't going to damage the engine. I haven't had any problems but I wanted to ask if anyone else knew/heard of this before.

TMO Supporting Vendors