2016 GMC Sierra 1500 – Whipple Supercharged

GMC | Sierra : December 23, 2020

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!

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