Put a camera on a tripod for the first time you start it. That way the whole world can know if you succeed or fail.

Hell, I'd say I'm a halfway decent mechanic and I still wouldn't attempt a 408 build myself (Namely, because I'd put a new engine in a car before I did a bottom end). I'd let a machine shop do it, preferably one that has years of experience in custom work.

 

the critical steps are:
1. measuring main, rod, and cam bearing clearances with dial bore gauge and micrometer - $$$ tools
2. file fitting piston rings
3. torquing rod bolts and verifying bolt stretch
4. measuring installed piston deck height
5. spacing/clearancing windage tray for stroker crank

anyone can do it, but it requires some new tools, lots of patience, and a clean workspace.

i suggest buying Joseph Potak's book, that is a great place to start

 

Cleanliness is probably the most important thing after measuring for proper clearance. I still think u should have the machine shop assemble the short block, this ain't no stock 5.3 rebuild.

 

FYI, this was my first build and the cost of special tooling FAR outweighed the cost for a shop to put it together. only do it if you really want to, don't look to do it as a way to save money or time.