Camshafts are sometimes an enigma. Picking a cam that is the RIGHT cam for your project is critical to the end result you are looking for. We combine real world data with state of the art cam evaluation software to help the customer make the right decision the FIRST time. If you are not sure which grind is appropriate for your application, please don't hesitate to call and speak with one of our techs. They will spend all the time it takes to insure that your end result is what you were expecting!

Installation requires careful checking of various clearances as well as valve springs that are appropriate for the application. We highly recommend roller tip rocker arms for cam lifts above .550".

’84-Up Evo Big Twin Camshafts

Application Timing @ .053" Duration @ .053" Valve Lift Part Number Price (U.S.) Buy Online TR-590 cam shafts for Evo Big Twin 95" motors with 10.5:1 or higher compression ratio. Maximum torque and horsepower at mid and upper rpms (2400 to 6200) I: 22/101/44 E: 48/104/20 246 248 .590 .590   $200 TR-650 is a high lift cam for high-output Evo Big Twin 95" and larger motors. Torque band from 2600 to 6500 rpm. The builder's cam of preference for JIMs 120 and S&S motors I: 26/103/52 E: 56/106/24 258 260 .650 .650   $200 TR-715 is designed for high-output Evo Big Twin street motors with 11.5:1 or higher compression ratio. Runs well on pump gas. I: 32/104/60 E: 64/108/28 272 272 .715 .715   $275 Other brands are available. Call us at 1-866-892-2109 for details!