Tag: Sierra 5.3 performance

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Tuning A GMC Sierra's Trusty 5.3L V8 Engine For More Horsepower

Tuning A GMC Sierra's Trusty 5.3L V8 Engine For More Horsepower

GMC Sierra owners can add serious horsepower to their truck's 5.3L Vortec V8 engine with bolt-on parts like intakes, exhausts, tuners, and internal upgrades like camshafts and cylinder heads.