Mopar Muscle Association UK

He's sent me a few pics and the block number is 2899830-8 which according to my research suggests it's a 68-79 361 truck or industrial block. And he want's the valve steam heights to check the lash. Any ideas? Here's his latest Email;
"Kev,
I have been looking this afternoon on the Internet and wondering if my engine is not only a 209HP Chrysler 75M petrol engine ????? Formerly installed on the lightweight armoured personnel carrier M113. How about this?

If it is, can you tell me where could I get its tech. specifications: How to check valves? Valve steam height? How to get valve clearance correct if any? All tune up specifications?
Thierry"

Here's a pic, I'd love to see that data plate!

Ask on Moparts, I'm sure he will be able to get a definitive answer there! It definitely looks a bit unusual!

Is there anyone he has not asked now ! I posted on Moparts, thats where I got the answers from ! if he is asking the whole world for info I ain't going to spend hours looking through the books, I am busy so someone else can do a bit !

If anyone sees the plate here is what it means http://www.marineengine.com/manuals/chr ... ne_id.html

and here for a workshop manual http://www.marineengine.com/manuals/chrysler/#