Brian, I'll let one of our more knowledgeable members give you more details, but essentially, you have a two piece rear seal in that year, as I remember. You are right about dropping the pan, and you will also remove the oil pump and the distributor drive shaft. One way is to loosen all of the main caps only slightly to let the crank drop down, just a tad. Remove the rear main cap completely, exposing the upper seal in the block. You can sometimes just turn the crank a little and the top seal will come out, or you can help it by screwing a small screweye into the end of the seal and assisting it as you turn the crank. They sell a tool that looks like a skinny corkscrew with a handle to do this too.

Once the seal is out, the new seal should come with a little plastic "slider" to put in first that keeps the new seal from getting damaged as it goes in. Lube both sides with oil to help it slide home. Once it is in place (follow the instructions about which side is out..........I think the lip goes toward the motor), then retorque the main caps and replace the rear cap with the new seal installed in it too. There is a sealant called anerobic or something like that made for rubber, and you can paint the ends of both seals with that stuff to seal the gap.

Under some cars it is a b****, but in a Model A frame you won't have much in the way of dropping the pan down. Now we'll let the good mechanics tell us the right way to do it.

Don

Hehe, Randy was typing same time as me.