89 MJ Posted 7 hours ago Share Posted 7 hours ago I saw that Newcomer Racing has come out with roller camshafts for 4.0s. Not at all cheap, but sure beats having to build an engine with a flat tappet cam twice with the poor quality of new flat tappet lifters. Looks like they have the same offerings as their flat tappet cams. For anyone interested: https://www.newcomerracing.com/store/p49/Billet_Roller_Cam_and_Lifter_Kits_4.0_4.2_Jeep_AMC.html#/ Link to comment Share on other sites More sharing options...
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