Okay, guys. Got a little time this afternoon to crawl around the truck with a wire brush looking for numbers. Here is what I found:

On the backside of the top of the intake:
3746826
GM 8

On the frontside of the top of the intake:
firing order
18486572

On the front of the rightside head:
850


And while I was having so much fun scraping, cleaning, and looking, here's what I found on the diff:

Front: 68219

Side by fill-plug: 3698535

On a small plate under the above number: 42

And a big stamped "1" next to that.


I'll continue scraping on the backside of the engine block, and see what I can find there. I didn't find anything on the exhaust.

Any info is greatly appreciated. Thanks!

Last edited by Husker; 05/13/2011 8:40 PM.