After the easy stuff like intake and exhaust, the modification most of us want to make to our big diesel pickups is a lift kit. “Get that sucker up in the air so you can get some big wheels and ...

It has been about a year since Ford redesigned its F-150 for the 2009 model year, replacing the already excellent 2004-08 trucks. As F-150 owners upgrade to the current model, the market is starting ...

Give them the results of a TDC valve-drop static clearance test, and Comp Cam's techs can calculate the piston-to-valve clearance for any of its cams at any degree of rotation. This is especially ...

The latest GM LS-style engines come stock with free-flowing, rectangular-port heads—they just need a great cam to wake them up. Enter Comp Cams' new LSR series. Available for both late-model one-bolt ...