Small block confusion

The late LA series 360 would have shaft mounted valvetrain and roller cam as noted by crackedback. They will have the 308 casting LA head,basically the predesor of the magnum with much improved exhaust ports over the LA head,but not quite as good as the Magnum.

The Magnum series would have pedestal style rocker valve train like a chev but the heads are closer to the old AMC heads. They have a roller cam as well.

Earlier than 88 you probably wont find a roller cam 360. You will find roller cam 318's as early as 85 with shaft rockers.

The LA series ended in 92.