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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.
Competition Cams, Inc., often styled as COMP Cams, is a specialty performance automotive aftermarket, motorcycle, and kart parts manufacturer. The company has five US locations including headquarters in Olive Branch, Mississippi .
Pontiac East Assembly (also known as Pontiac Assembly Center and GMC Truck & Coach Division Plant 6) was a General Motors manufacturing facility located in Pontiac, Michigan. The manufacturing complex at 2100 South Opdyke Road occupied a rectangular 162-acre site directly east of the GM Pontiac Centerpoint Complex. [ 1 ]
The High Value engine family from General Motors is a group of cam-in-block or overhead valve V6 engines.These engines feature cast iron blocks and aluminum heads, and use the same 60° vee bank as the 60° V6 family they are based on, but the new 99 mm (3.90 in) bore required offsetting the bores by 1.5 mm (0.059 in) away from the engine center line.
A camshaft operating two valves. A camshaft is a shaft that contains a row of pointed cams in order to convert rotational motion to reciprocating motion.Camshafts are used in piston engines (to operate the intake and exhaust valves), [1] [2] mechanically controlled ignition systems and early electric motor speed controllers.