Found a Distributor??

Best way to tell an LA small block distributor from a big block distributor:

With the shaft pointing down, vacuum can nipple pointing AT you, the vacuum can comes out on the left side of the distributor housing for small blocks, on the right side of the distributor housing for big blocks.

Later ('72-up) big block RB distributors have 2 grooves cut into the blade end of the distributor shaft, Low Decks have only 1 groove.

Mark.