420 cubes and they are Harland Sharp rockers. The Harland Sharp rockers are fine you just have to shim the lifters solid. The way the Gen 3 Hemi oils the lifter these rockers will not work with a Hyd lifter.
Any issues with the Harland rockers ?
04 Ram 4x2 11.66@ 122 4750LBS ...phat pig Moves for fully loaded truck with NA 345ci Hemi 2020 1320 Challenger....stock daily driver.