Breaking in and testing out the new(er) Chevy 383 in my 1972 Cobalt Jet runabout. A broken water pump belt overheated the previous 383, leading to this buildup. Shortblock: M&R Engines Street Economy package - Forged Keith Black pistons, 5140 I beam aftermarket rods, Nodular iron 3.75" stroke crank, externally balanced. Comp Cams Xtreme Marine 278H hydraulic cam and lifters. Heads: Dart Iron Eagle Platinum 200, 72cc chambers, straight plug. Estimated 9:1 CR Carb: Custom assembled and tuned Quadrajet using big block spec parts by Recarbco Carburetors. Other: Edelbrock Performer RPM intake manifold, 7Qt "Econo" Series Hamburger Racing oil pan, GLM Universal style center rise exhaust manifolds and risers. Music: 2 Minutes to Midnight by Iron Maiden