History of the Pontiac OHC 6

The Pontiac OHC 6 was a radically new design conceived by John Z. DeLorean and executed by Pontiac's engineering division. The OHC 6 was introduced in the 1966 model year Tempest and LeMans automobiles in an economical 1 Bbl. version and in a high performance 4-Bbl. Sprint version. The OHC 6 created a stir in the American automotive marketplace with its unique belt driven overhead cam design. The engine was offered in the Tempest and LeMans from 1966 through 1969 and in the Firebird from 1967 through 1969. Many refinements were made during the engine's production. In 1968 the displacement increased from the original 230 cubic inches to 250 cubic inches. For 1969 the venerable "H" motor was produced, backed up by a manual transmission. This motor, with its hotter "H" cam, was factory rated at 230 HP!  Development of the motor ultimately ended when the 2nd generation (1970-1981) Firebird's hood line was deemed too low to accommodate the timing belt cover of the OHC. Over 100,000 Pontiac OHC6 motors were produced for both domestic and export use.