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376 CI Whipple 2.9L Supercharged LS3

376 CI Whipple 2.9L Supercharged LS3

The 376 cubic inch Whipple 2.9L supercharged LS3 engine is our most popular engine for high performance use. Hand built by our experienced engine techs. Not only is this LS engine easily capable of 875 - 950+ horsepower and 850 lb-ft of torque, it is also extremely drive-able for everyday use.  It comes complete with a Holley ECU, Wegner Automotive custom valve covers, and the WAK040 front accessory drive.  If you want to push your horsepower and torque to the max - this is the motor for you!

Starting at $30,400

Want to upgrade to a 416ci or 427ci? We can do that! See the options tab for all available options and upgrades.

Please note - all our engines are built to order - please allow 4-6 weeks for delivery.

Interested in becoming a dealer? Contact us for more information.

Our Supercharged LS3 / LSA Engine comes with the following –

  • 376 CI GM LS3 6.2L Block
  • Forged LT4 8 Bolt Crankshaft & Forged 4340 Rods
  • Mahle Forged SC Pistons
  • SC 6 Layer Head Gaskets
  • GM Lifters
  • Melling Oil Pump
  • Holley 302-2 Pan Kit
  • HD Pushrods
  • Bullet SC Camshaft
  • Upgraded Trunnion Rocker Arms
  • Wegner Motorsports CNC Ported LS3 / LSA Cylinder Heads
  • Inconel Exhaust Valves, HD Stainless Intake Valves
  • Dual Valve Springs
  • Whipple 2.9L Supercharger
  • 2 pc Hidden Coil Valve Covers, Bigger Style, Internal Baffling w/ Custom Logo
  • WAK040 Wegner Accessory Drive w/ Dedicated 8 Rib SC Belt & 225 Amp Alt Upgrade
  • 95 lb. Fuel Injector Connection Fuel Injectors
  • Spark Plugs, Plug Wires, Coils, Coil Harnesses
  • Holley Drive by Wire ECU
  • 90mm GM DBW Throttle Body
  • Machining, Assembly and Dyno Tune


We offer a variety of options and upgrades so you can customize your 376 CI LS3 supercharged engine to best meet your build application. Options and upgrades are priced individually, above and beyond the base sale price of the motor.  Contact us for more information and details on pricing. 

Available options and upgrades include –

  • GM 416 CI Block
  • Dart SHP Iron Block, 427 CI
  • GM ECU, Harness & Tuning
  • Callies Dragonslayer Forged Crankshaft & Ultra Rods
  • Dailey Dry Sump
  • Nick Williams DBW 102mm Throttle Body and 1.750" Spacer
  • Paint Engine Black or Custom Color
  • Paint Supercharger

Ask a Question To Purchase - 920-394-3557