it was mentioned a Comp 268H , 270H , ex268 however I have no idea what that means. I looked up Comp Cam 270H and it came up as a Chevrolet cam...be easy on me Im learning lol

Go to the Comp Cams web site, click on products, click on camshafts, hover over AMC/CHRYSLER/DODGE and click on Big block 383-440. When the next page opens look through the hydraulic flat tappet camshafts choices and you will find the suggested cams.