The rocker arm employs the use of a fulcrum or pivot to increase the cam lift by a given ratio. That increase in lift is the result of moving the pushrod pivot point closer to the fulcrum. That ...

This pump-gas, 470-inch big-block Mopar we recently started working on was originally built with factory-style, 1.50:1-ratio rocker arms. The 1.50 rocker arms were working just fine, but we decided a ...

Ok I'll try to keep the story short.<BR><BR> 1988 Jeep Cherokee, 4.0 liter inline six.<BR><BR> I changed my oil last Sunday (Oct 23rd) at my dads and all was well. Then I drove about 35kms home after ...

When most of us think about performance parts, roller rockers are usually not the first parts to come to mind. However, a good set of roller rocker arms can not only reduce friction, but also they are ...