This is an Idle comparison between stock and 212x cams idle on my 4.7 Ram. I got these back in 2018 from a seller on ebay. The cams are 212x regrinds of H.O. cores done by CraneCams back in 2016, Unfortunately Cranecams is no longer doing regrinds for the 4.7L. If we want more cams for the 4.7 we will need to come together and contact companies to start making them again! you can contact me on instagram @rochelle_ram_1500 if you have any questions. Thanks for watching.