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Why the Sierra Classic 454 became GMC’s heavy hitter
Collectors chase the GMC Sierra Classic 454 because it captures the last gasp of big-block torque in a square-body truck.
Fast Lane Only on MSN
Why the SP 454 remains one of GMC’s wildest moves
GMC’s Sprint SP 454 arrived during Detroit’s peak muscle era, yet it slipped into obscurity while its Chevrolet cousin stayed ...
Discover how the LS1 became a lightweight, swap-friendly V8 icon, from its C5 Corvette debut to HSV power upgrades, and learn ...
Despite the GM 454 and Pontiac 455 being within a cubic inch of each other, and both being GM brands, the two engines are ...
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