it also received a number of handling-improving modifications like stiffer sway bars and variable power steering. The Pontiac 455 HO V8 was also introduced in 1970 with a peak horsepower rating of 360. Most Pontiac enthusiasts agree that was a dramatic underrating...
I have to warn you that it must have been a humid day because all of Dan’s pictures from here on out are cloudy. All 1971 Trans Ams were equipped with the top engine option for 1971 from Pontiac. The HO455 cubic inch V8 engine was rated at 335 horsepower and 480 lb-ft of torque...
The Y82 Trans Am could be ordered with any of the three available engine options in 1977 but the most powerful engine was the introduction of the W72 400 cubic inch motor which matched the 200 horsepower rating of the previous year’s 455 cubic inch V8. The W72 engine is usually identif...
Properly installed, the kit could add between 30 and 50 horsepower (20-40 kW), although it required high-octane superpremium gasoline of over 100 octane to avoid spark knock with the higher compression and advanced timing. Second generation 1968 GM redesigned its A-body line for 1968, ...
Production of what DeLorean called “an Italian sandwich” began in October 1963. Known on the order form as RPO 382, the 1964 Pontiac GTO was a $295.90 option package that included the 389 engine (which Pontiac badged as “6.5 Litre”) with a gross rating of 325 horsepower (242 kW),...
That car's 400 horsepower is underrated though. Reply 4k 1 Shaggy 11y ago It could do 189 mph with an extra 120 horsepower by my calculations. Reply 3.8k 1 bluefingers 11y ago It CAN reach 189 but ONLY with a few thousand miles. https://answers.yahoo.com/question/index?qid=20140716...
Standard horsepower at first was 173/180 (manual/automatic); an optional four-barrel carburetor yielded an even 200. A strong oversquare design with five main bearings, the Strato-Streak was somewhat related to Chevy's all-new 1955 "Turbo-Fire" V-8. Though not quite as advanced, it would...
along with a freer-flowing exhaust system. These enhancements helped boost output to 320 horsepower at 5,200 rpm and 345 foot-pounds of torque at 4,400 rpm, which was an improvement of 15 horsepower and 25 foot-pounds of torque over the standard Trans Am. Buyers could choose between a fo...
Pontiac would redesign the Grand Prix for 1973 and find instant sales success. Production would increase by two-thirds over 1972, from 92,000 units to 154,000. That momentum wouldn’t hold for long as the OPEC oil embargo caused gasoline prices to soar in 1973-75 and car buyers began mov...