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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 ...
GM Authority has been busy serving up several exclusive details on the next-gen GM Small Block V8, but now, we're wondering - ...
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