[g503jeep]

All engines 1968 and up, 455 400 403 350 307 260, use the same lifter bank angle of 39°. the earlier engines
had 45 degree bank angle,same bank angle you can use the cam from any engine
you can put the same cam from any engine displament,after all their is no size diference externally ,like in a chevy big block or small block, i think the 455 is only noticed by a casting hump diferent than a small dispaclement