Hey 79, what prop do you run?

In the picture, the pad with the identifier is under the electrical cable that's running across the top.

Thanks Tom I'll get him to go take more pictures

You're welcome!

He says he can't see any other numbers. Oh well.

Mercruiser ID tag is on the rear of the block above the bellhousing.

Right now I have a 25p mirage plus. I think I am going to swap to a 24p 4 blade though.

You will love the Bravo prop. Makes everything easier. you have a bad bird sir.

I just talked to Bob Grissom (might have spelled it wrong) the engine builder. He was very kind and very helpful. He relayed to me this information.
It was an original 454 block
He bored it 100 over he said which makes it a 476 cubic inch block. He used pistons with about 100 thousands dome they have a compression ratio of about 9.75. It is indeed a flat tappet cam shaft but does have roller rockers. He said it is a factory gm 454cu 450hp cam shaft. He said the engine is precision balanced, he put a little aluminum intake on it. Ran it on the test stand over an hour to check it all out before it left. All in all he said it should be around 425 hp or so the way it is. Hotter fuel and more timing might squeeze more from it but it simply a reliable engine as it is now.