The Stovebolt Site Forums The Shop Area Engine Shop Heaviest Straight 6

MACK RAN A 673 , WAS PRETTY BIG, ALSO INTERNATIONAL RAN A 6 CALLED A RED DIAMOND--THINK IT WAS 573 CUBES. BOTH REAL LONG STROKE, BOTH MONSTEROUS. BIGGEST GAS ENGINE I EVER WORKED ON WAS A MURPHY, USED ON BIG POWER EQUIPMENT LIKE POWER SHOVELS.