The 1972 GTO’s 455 HO packed a net 300 hp and 415 lb-ft, hiding true power behind new rules — a last stand before the Goat ...
For many people out there, the debut of the 455 HO V8 long-stroke engine in 1970 was the Pontiac GTO they’ve been waiting for since 1965 when GM decided that the highest this series could go was 400 ...
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