Turn that 5.3L LS into a race monster.
The 5.3L LS, ahum ~327ci, engine is one of the most cost-effective ways to get LS power. Now you can make SERIOUS power with your 5.3L engine using Mast Motorsports Black Label heads. Supporting over 500hp+ naturally aspirated on pump gas with the stock bottom end, the Mast Black Label 5.3 heads are a force to be reckoned with and so will your 5.3!
💪 Dyno proven power. 💪
Gain 37+hp with head swap ONLY, using stock truck intake.
Gain 100+hp with heads and cam swap, using STOCK truck intake!
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