The Offenhauser or "Offy" is a racing engine that dates back to the 1950s. It features a revolutionary design that casts the block and cylinder head as one piece, eliminating headgasket failures under high compression and boost. This Indy car is a 1972 Chassis that won the 1973 Indianapolis 500 with Gordon Johncock at the wheel. it's 4 cylinder, 159 cu.in Offy engine makes over 700 horsepower! | Hemmings

The engine from our previous post on #throwbackthursday was this 232ci AMC Inline 6 and we figured you guys always enjoy a dyno video! This engine was not a full rebuild, it was a refresh to give it a little more life and power, while dressing it up a little. It got new rings, bearings, a spicier flat tappet cam, and a few performance parts like an Offenhauser Sales Corp 4 bbl intake, Quick Fuel Technology carburetor, and MSD Performance distributor. It really picked up on the dyno and in the ve