Just a 284-484?

RV cam for 360s in a 4 wheel drive?.....have you ever used one before?

you can barely get the power brakes to work ......

*P4120231 284/284 68 108 .484/.484 P4120249 2600-6000 Drag mod. comp w/ auto or 4 speed

Yes. Mike may have been remembering that there were TWO different 284/484 cams many years ago. One ground on 108, like you describe and the other ground on 112. that 112 would not be too bad in a 4X4.