You are watching: 5.3 l engine in cubic inches

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See all 3 photosWith simply a gentle cam and valvespring swap, a diminutive Gen III 5.3L LS have the right to make north of 400 hp. Add pocket-ported LS heads and also GM"s exceptional TrailBlazer SS entry manifold, and also you can be looking at 450 hp ~ above a 5.3, and knocking top top the door the 500 hp v the 5.3"s 6.0L big brother—as proven repeatedly in tests by Richard Holdener and (shown here) Jeff smith at Westech Performance.


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See every 3 photosEdelbrock"s brand-new Pro-Flo 4 LS ECU and Harness Kit (PN 35711) is designed particularly for junkyard Gen III LS engine swaps, complete seamlessly v the OE GM LS injectors, coils, crank sensors, and other manufacturing facility intake manifold relations to substantially simplify the installation, start-up, and also performance tuning processes. Together of august 1, 2019, it"s on revenue at Summit Racing because that $810.95. At the price, you"d be tough put to discover a much better system. Finish kits including intake manifolds are additionally available.