Due to stricter government regulations, the era of unrestrained factory-built performance was coming to an end in 1971. However, GM's excitement division answered with the largest displacement engine ...
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Even as the era shifted, the 1971 Pontiac Trans Am 455 HO held strong
The 1971 Pontiac Trans Am 455 HO arrived just as muscle cars were being choked by new emissions rules, rising insurance ...
Pontiac didn’t produce too many Firebirds equipped with the 400 HO engine for the model year 1969, and needless to say, the convertible accounted for an even small share of these numbers. A total of ...
351 Cleveland engines in the four basic configurations: A. 2 barrel; B. 4-barrel; C. Cobra Jet; D. HO or Boss 351. It seems that in the world of high-performance engines, the 351 Cleveland has been ...
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