Kim brought us his 2016 GMC Sierra 1500 to have the 5.3L L83 fully built and boosted! Build details below:

 

• Whipple Superchargers 2.9L W175ax twin-screw system, modified to work with OEM LT4 high-pressure fuel pump
• Katech CNC ported cylinder heads
• Gwatney Performance Innovation drop-in pistons
• Cam Motion custom billet-core camshaft
• COMP Cams camshaft phaser lockout
• Johnson Lifters 2110 hydraulic roller lifters
• Brian Tooley Racing valve springs
• Brian Tooley Racing trunnion roller upgrade
• Brian Tooley Racing pushrods
• Katech Performance Parts C5R/C6R timing chain
• ARP Pro Series cylinder head bolt kit
• Brian Tooley Racing AFM block off plugs
• Stainless Works long-tube headers
• GSport catalytic converters
• Stainless Works exhaust system
• Design Engineering, Inc. Protect-A-Boots
• MSD Performance spark plug wires
• NGK Spark Plugs LZTR7AIX spark plugs
• PowerStop Z36 brake kit
• Aeromotive Fuel Systems fuel pressure regulator
• OEM GM LT4 high-pressure fuel pump
• OEM GM LT4 DI fuel injectors
• Circle D Specialties Pro Series 2,800rpm stall speed torque converter
• All the miscellaneous OEM and aftermarket components to bring it all together

 

With the mechanical work wrapped up in the shop, John strapped her down to the rollers for Vlad to perform a custom calibration via HP Tuners. With 93 octane in the tank, and the Whipple 2.9L delivering ~11psi, Vlad increased the L83's output to 539.80whp & 533.26lbft!