I think it's a #2 also. The transom will tell us for sure.

[ATTACH=CONFIG]530901[/ATTACH][ATTACH=CONFIG]530902[/ATTACH]

I talked with the guy and he confirmed it was a late 60's early 70's # 2 drive. It was connected to a 460 HP 482. And yes it does have a 2 blade prop on it. What is the history of the #2 drive? How strong is it?

I put numerous engines in front of that drive in a 1970 Pachanga. Started with a twin turbo 350 small block Gale Banks set up, 6-71 blower on a 400 c.i.,a 454 chevy, and a 427 aluminum headed L-88. The drive held up the engines were the weak link, I guess that's what's called the learning curve. I still have a few old number 2 parts laying around in the attic. John M. PS (also put new stringers and floor in Pachanga go figure)

Masoman, What else can you tell me about this drive? What is the prop shaft diameter? Can props off other speedmaster drives be used? How many splines is the shaft?

I will have to go up in the attic and measure it I will let you know later tonite.

The drive I have has a standard lower unit on it not the speedmaster style and the shaft is 11/8" diameter with 18 splines. I believe it takes the same prop as the old Dana outdrive. John M.

[ATTACH=CONFIG]531032[/ATTACH]I went and looked at this boat tonight and here is a better close up picture of the transom plate. What problems are there with these outdrives? Is this an electric shifted drive? John, from what you said I guess my spare SSM II props wont work

It is cable shifted in the picture I can see the cable. I do not know what the splines are on the speedmaster lower that you have, the one I have is not the speedmaster it is a standard lower unit.

I have two different "small shaft" speedmaster props for sale locally to you on Craigslist. You would be welcome to try them. They came off a SSM3.
http://detroit.craigslist.org/okl/boa/4662720695.html