Engine Parts Interchange
Late and early timing covers / water pumps.........You can put late water pump timing cover in an earlier car the lower outlets are different as are the timing marks. That can be a gotcha
The late TBI 'junkyard' LA engines don't have a fuel pump mount on the timing cover
Neither do magnums, and the magnum pan setup is different, confused? I believe the magnums all use a 360 pan. These are recognized by the SMALLER rear 'half mood" cutout. The LA 273--318--340 pans have the "big" cutouts, same size, front and rear.
If you buy an engine, it's "likely" from a truck or van, meaning you need different engine brackets, exhaust manifolds, pan and pickup.
It's pretty difficult to list all the differences. I had early 273 adjustable rockers on a much later model 360. You cannot run LA rockers on a magnum, but you CAN run mag heads on an LA. You can NOT run LA heads on a magnum. The list goes on.