Rocker arms are considerable less work to replace than a camshaft, even on an LS engine which is a lot easier to cam swap, so if they are worth the same power as a camshaft then why not just do the rocker arm swap? Richard Holdener is going to do cam swap vs rocker arm swap testing in the video below, so check it out and see if a rocker arm swap is what you need, or if you should just go straight to the cam swap.
Video Description:
DO ROLLER ROCKERS ADD POWER? FULL DYNO RESULTS ON LS ROLLER ROCKER UPGRADES. HOW MUCH POWER DO THEY ADD TO AN LS MOTOR? ARE ROLLER ROCKERS A GOOD UPGRADE? HOW DO ALUMINUM ROCKERS COMPARE TO A CAM SWAP? HOW MUCH POWER IS A CAM WORTH? CHECKOUT THIS VIDEO WHERE I RAN THREE DIFFERENT MOTORS, THE FIRST WITH A SIMPLE BTR TRUCK NORRIS CAM SWAP ON A 5.3L. TEST NUMBER 2 INVOLVED COMPARING A STOCK LM7 CAM TO AN LS7 CAM, THEN SHOWING THE RESULTS OF 1.8 ROCKERS ON THE LS7 CAM. THE FINAL TEST WAS TO DYNO TEST 1.85 ROCKERS VERSUS THE STOCK ROCKERS ON A 5.7L LS1, THEN COMPARE THE ROCKER GAINS TO A CAM SWAP (WITH STOCK ROCKERS).
