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A single overhead camshaft (SOHC) design was introduced by Pontiac in the 1966 model year as the standard engine in the Tempest. Offered also in 1967, the 230 cu in (3.8 L) OHC 6 shared internal dimensions with the overhead valve Chevrolet straight-6 engine it was based on, [ citation needed ] but had unique cast iron block and head castings.
Though a change of camshaft would delay production, Pontiac decided to change camshaft, employing one with identical timing to the 744 camshaft, which had been used in the 400 Ram Air(aka Ram Air III) engine with manual transmissions. As a result, peak horsepower dropped from 310 to 290, though torque increased from 390 to 395 lb. ft.
The 1990 Peak Antifreeze 500 was the 23rd stock car race of the 1990 NASCAR Winston Cup Series season and the 20th iteration of the event.The race was held on Sunday, September 16, 1990, before an audience of 74,000 in Dover, Delaware at Dover Downs International Speedway, a 1-mile (1.6 km) permanent oval-shaped racetrack.
The 1992 GM Goodwrench 500 was the second stock car race of the 1992 NASCAR Winston Cup Series season and the 27th iteration of the event.The race was held on Sunday, March 1, 1992, before an audience of 43,600 in Rockingham, North Carolina, at North Carolina Speedway, a 1.017 miles (1.637 km) permanent high-banked racetrack.
In this shop, Iskenderian fabricated parts, including camshafts, for fellow hot rodders. [3] He started with a single cam-grinding machine, [3] which he adapted for the purpose himself. [2] When the war ended, Iskenderian (like many other hot rodders) applied the experience and expertise gained in the Army to car building.
The 1991 GM Goodwrench 500 was the third stock car race of the 1991 NASCAR Winston Cup Series season and the 26th iteration of the event.The race was held on Sunday, March 3, 1991, in Rockingham, North Carolina, at North Carolina Speedway, a 1.017 miles (1.637 km) permanent high-banked racetrack.