All good info here all the time!
Oldsmobile's have block numbers in front just under the intake manifold sealing rail. Small blocks are all numbers, big blocks are numbers followed with a capital letter. If that is followed by a small capital letter A,that means it left factory without manual transmission provisions. That the easy way.
Like that box of chocolates. .....no telling what's exactly going on inside. LOL with that Olds and welcome!
