I bought a wrecked '92 Chevy Tow Truck that made a good donor for many parts. 
Namely the 454 engine and HydraBoost brake booster.

Ready to go to the machine shop.

The 4 bolt block is in good shape.

Cylinders have no ridge at the top

My daughter helps tear down the engine.  She claims the Vette is hers

Crank journals show very little wear.

The Gen V Big Block arrives at it's new home.

Original main bearings show normal wear.