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After the 1974 SD455 was dropped the 1975 Firebird's top performance engine was an 'L78' Pontiac 400 cu in (6.6 L). Pontiac still offered the regular 455 (RPO L75) in its full sized cars, and after a negative public reaction for dropping the 455 engine, it was re-introduced mid-year as an available option for the 1975 Pontiac Trans Am.
The protests, combined with reports of a 19-year-old woman dying in an accident caused by her Firenza's steering failing, prompted intervention by the Canadian government. GM denied the problems and attempted to protect the Firenza's reputation through deceptive marketing before withdrawing it from the Canadian market in early 1973. [54]
In 1935, Pontiac re-introduced their six-cylinder engine, as a 208 cu in (3.4 L) straight-6. The 208 was produced in 1935 and 1936. It was a side-valve design with a timing chain, as was popular at the time. This engine featured a conventional one piece cylinder head, and the distributor was moved to the side of the block.
Pontiac, or formally the Pontiac Motor Division of General Motors, was an American automobile brand owned, manufactured, and commercialized by General Motors. It was originally introduced as a companion make for GM's more expensive line of Oakland automobiles. [ 3 ]
The car was a trim package of the Pontiac Le Mans, but powered by the Pontiac 400 rated at 200 hp (149 kW; 203 PS) (the T/A 6.6 "W72" version, not the base 400, which made 180). Cars specifically destined for Californian or high-altitude county dealers, featured the Oldsmobile 403 Small Block making 185 hp (138 kW; 188 PS).
A Silver streak 8 in a 1949 Pontiac Streamliner - note the large intake silencer leading to an oil-bath air cleaner on the left side of the engine. The Pontiac straight-8 engine is an inline eight-cylinder automobile engine produced by Pontiac from 1933 to 1954. Introduced in the fall of 1932 for the 1933 models, it was Pontiac's most powerful ...
Consumer Reports (CR), formerly Consumers Union (CU), is an American nonprofit consumer organization dedicated to independent product testing, investigative journalism, consumer-oriented research, public education, and consumer advocacy.
As Pontiac had discontinued the 455 in the previous model year, a modified 400 Pontiac V8 dubbed the "T/A 6.6" RPO W72 with a single four-barrel 800CFM Rochester Quadrajet carburettor rated at 200 bhp (203 PS; 149 kW) at 3,600 rpm and a maximum torque of 325 lb⋅ft (441 N⋅m) at 2,400 rpm, as opposed to the regular "6.6 Litre" 400 (RPO L78 ...