LS Engine Power Packages - A New Generation Of Performance

LS1/LS2 Power Recipes

Richard Holdener May 1, 2008 0 Comment(s)
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Spec Sheet 600hp LS2
Given the impressive starting point, exceeding 600 flywheel horsepower from a 6.0L LS2 is every bit as easy, especially when you introduce a little nitrous oxide to the mix. Running a set of Trick Flow Specialties CNC-ported LS1 heads, a small Crane Z-series cam (212/224 duration), and a set of Hooker headers, the mild LS2 produced 524 hp. After adding the NOS plate system to the mix, the peak power numbers jumped to 632 hp and 649 lb-ft of torque. The transition from a mild (albeit powerful) 525hp daily driver to serious street machine comes at the push of a button. The instantaneous thrust of torque offered by the NOS kit is seriously addictive.

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Whether stock or modified, nitrous oxide can add power to any combination. We installed an NOS plate system on an LS2 equipped with Trick Flow CNC-ported LS1 heads, a small Crane cam, and Hooker headers. Adding the NOS kit to the modified LS2 motor resulted in 632 hp and 649 lb-ft of torque.

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Spec Sheet 700hp LS1
The twin turbo kit from HP Performance was installed on the engine and then into a C5 Vette with excellent results. Running 13 psi, the turbocharged LS1 stroker produced 706 wheel hp and 713 lb-ft of torque. The same HP kit has been used with 67mm turbos to exceed 1,100 wheel hp on a purpose-built 408 stroker.

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What power recipe story would be complete without a turbo system? Extracting 700 horsepower from a 6.0L LS1 is not particularly difficult, but having that power come in a driveable combination makes life somewhat more difficult. The challenge is overcome with boost, in this case from a twin turbo kit from HP Performance. HP combined its intercooled twin (57mm) turbo system with a low-compression short-block (using a 6.0L truck block), a set of AFR 205 heads, and a FAST LSX intake to produce 706 rear wheel horsepower and 713 lb-ft of torque. These power numbers came at a peak boost pressure of 13 psi. Note that 706 wheel horsepower translates into something near 800 flywheel horsepower-a stout LS1 indeed.