Trans am 1971

Trans am 1971
Comments: 1971 saw little styling change for the Pontiac Firebird, with the addition of high-back bucket seats being the major appearance change. Rather, the major changes were under the hood. In order to satisfy General Motors decree that all engines had to run on unleaded gasoline to meet federal emission standards, the engine options were significantly altered. A new 400 V8 rated at 300 bhp was added, but both 400 Ram Air engines were dropped. In their place were two new 455 V8s, rated at 325 bhp and 335 bhp. The 455 HO engine was only available in the Trans Am and borrowed the cylinder heads from the 1970 Ram Air II and the intake manifold from the 1970 Ram Air IV. The Trans Am continued with its blue and white paint scheme, functional rear facing engine shaker hood scoops, and aero body pieces. Although the 455 engines available in the Trans Am were less powerful than the 1970 Ram Air II and IV engines, their 480 lb-ft of torque and less tempermental nature made them easier to drive on the street and were one of the high points in a time when performance was on the decline.
Production: Formula: 7,802 Trans Am: 2,116
Engines: 400 V8 300 bhp @ 4800rpm, 400 lb-ft @ 3600 rpm. 455 V8 325 bhp @ 4400 rpm, 455 lb-ft @ 3200 rpm. 455 V8 (HO) 335 bhp @ 4800 rpm, 480 lb-ft @ 3600 rpm.
Performance: 455/335 (HO): 0-60 in 5.9 sec, 1/4 mile in 13.9 sec @ 103 mph.