This past winter I rebuilt the 402 for my 72’. I was just looking to freshen it up with a mild flat tappet cam, trying to save some money. I’ve broken in many cams over the years, but this one went south in a hurry. I lost one lobe on break in, I did use proper break in oil and procedures. I didn’t want to spend the big money on a hydraulic roller, but I ended up having to and them some for a complete set of bearings and machine shop bill for cleaning it all back out. It’s a hard pill to swallow paying that extra, but I strongly suggest you consider a roller setup. I went with a complete Lunati kit, #20110548 cam, 535”/.545” lift, 220/230 duration @ .050”. Other than that it’s .030” over, 9.0:1 CR, stock 292 oval ports, Performer 2-O intake, Comp Cams roller tip rockers, Q jet for now. I’ve only had it on the run stand so far. I don’t know if this is true, but from what I’ve read and been told, the flat tappet cores are not up to the quality they use to be. Here’s a short video with the roller cam.
IMG_0697.MOV