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MTM111-120 - Mast Motorsports Turn-Key L99 6.2L Crate Engine - 570 HP With VVT Camshaft, With M-90 ECM and Harness

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Availability: Item has been discontinued and is no longer available
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This L99 has a Mast Motorsports engineered VVT camshaft that is custom ground on a Mast Motorsports VVT cam core.  The 416 foundation is a honed and decked L99 aluminum block with a 4.000” forged Callies rotating assembly with Mahle pistons that is topped off with LS3/L92 heads and a LS3 intake manifold.  ARP fasteners are used throughout and Manley pushrods ride on LS3 hydraulic roller lifters.  The L99 416 is the first release of a diverse line of Mast Motorsports hand built Camaro L99 based Turnkey Crate Engines that are designed for the Hot Rod/Muscle Car market.  The L99 416 peaks at the 570+ horsepower mark with a broad power curve and is competitively priced for such a powerful complete fuel injected turnkey crate engine. Runs on Premium 91-93 Octane

Type: L99 6.8L
Displacement: 416 Cubic Inches
Compression Ratio: 11.2:1
Bore x Stroke: 4.070 x 4.000
Rev Limit: 7000 RPM
Crank: Callies Forged
Rods: Callies H-Beam
Pistons: Mahle Motorsports
Cam: Mast Custom VVT Core Cam
Heads: LS3/L92 Heads
Intake: LS3Car Intake
Valve Springs: Mast Nitrided Beehive


LS3 Aluminum Block
Plateau Honed to 4.070”
True Surfaced Deck
Engine Block Debured
Blueprinted Shortblock
GM Car Harmonic Damper
ACL Rod and Crank Bearings
Callies 4.000 Stroked Crankshaft
Callies H-Beam Connecting Rods
Mast/Mahle Motorsports Pistons
LS3/L92 Cylinder Heads
ARP Head Bolts
ARP Main Studs
Cometic Headgaskets
GM VVT Phaser with Restrictor
Mast VVT Core Custom Hydraulic Roller Cam
LS3 Hydraulic Roller Lifters
Mast Black Label Pushrods
Mast Nitrided Beehive Valve Springs
M-90 Calibrated ECM
M-90 Main Wiring Harness
MAP/IAT Harness
Dual Bosch EGO Sensor
GM 90mm DBW Throttle Body
Bosch Dead Headed Fuel Rail
Bosch LS3 Fuel Injectors
Mast 8 Layer Air Filter with IAT Bung
Intake Air Temperature Sensor
Crankshaft Position Sensor
Camshaft Position Sensor
Oil Pressure Sensor
Oil Temperature Sensor
Engine Coolant Temperature
Engine Knock Sensors
Manifold Air Pressure Sensor
Ignition Coils
Spark Plugs
Plug Wires
GM Foot Pedal
GM Starter
GM Oil Filter
Engine Break in Oil Additive
Your choice of F-Body, Y-Body, or Truck Water Pump, Balancer, and Oil Pan

Application List



  • 111-120
  • 111-120
  • Mast Motorsports
  • Item has been discontinued and is no longer available
  • New


Shipping Information

  • Item Requires Shipping
  • 450.0 lbs.
  • Free Shipping!
  • FREE 48 State Truck Freight Shipping (International shipping will require freight quote)

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