Ford Performance Parts

It’s hard to believe, but the S550 Mustang (2015-17 Mustang) has now been in production for more than three years. That means more and more sixth-generation ‘Stangs from the 2015 model year will be coming off leases and out of warranty. So, if you’ve ever wanted to get your hands on an S550 (or hop

Q: I have a 1989 5.0L Mustang, and I recently purchased a Ford Performance X303-grind cam for it. I have some questions concerning valve clearance. Can I run stock pistons with this cam, or will it be necessary to alter the piston to achieve the proper piston valve clearance. How much clearance is recommended with this cam?