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MTM117-302 - Mast Motorsports Complete LS7 427 SS Engine (650hp), NO ECM or Harness

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

117-302
Availability: Special Order Item
Shipping: FREE 48 State Shipping
Pricing: $17,570.25

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Description

The LS7 SS’s heart and soul is the new GM Performance LS7 aluminum block. This LS7 engine family utilizes a Mast Motorsports engineered camshaft that is custom ground on a Mast Motorsports 3 bolt cam core. The 427 SS’s foundation is a fully machined aluminum block with a forged Callies rotating assembly with Mahle pistons that is topped off with Mast Motorsports CNC LS7 casting cylinder heads and a LS7 intake manifold. ARP fasteners are used throughout and Mast Black Label pushrods ride on GM Cadillac High RPM hydraulic roller lifters. This hand built LS7 based engine utilizes a camshaft that has a strong lope that creates great mid and high RPM power for the customer that will be aggressively racing their vehicle, but still wants great street manors for a daily driver.

Type: LS7 7.0L
Displacement: 427 Cubic Inches
Compression Ratio: 11.4:1
Bore x Stroke: 4.125 x 4.000
Rev Limit: 7250 RPM
Crank: Callies Forged
Rods: Callies H-Beam
Pistons: Mahle Motorsports
Cam: Mast Custom 3-Bolt Core Cam
Heads: Mast CNC LS7 Heads
Intake: GMPP LS7 Intake
Valve Springs: Mast Premium Nitrided Dual Springs

Engine Components:

  • LS7 Aluminum Block
  • Plateau Honed to 4.125
  • True Surfaced Deck
  • Engine Block Debured
  • Blueprinted Shortblock
  • ACL Rod and Crank Bearings
  • Callies Forged 4.000” Stroked Crankshaft
  • Callies Forged H-Beam Connecting Rods
  • Custom Mahle Motorsports Pistons
  • Mast Motorsports CNC LS7 Cylinder Heads
  • ARP Head Bolts
  • ARP Main Studs
  • Cometic Head gaskets
  • Mast 3 bolt Core Custom Hydraulic Roller Cam
  • GMPP Cadillac Hydraulic Roller Lifters
  • Mast Black Label Pushrods
  • Mast Premium Nitrided Dual Springs
  • Mast Hollow Stem Intake Valves
  • Mast Exhaust Valves
  • Titanium Retainers
  • Machined Locks
  • Trans Harness
  • EGO Harness
  • Bosch EGO Sensor
  • Fuel Pump Harness
  • Fan Harness
  • LS7 Intake Manifold
  • GM 2010’ 90mm DBW Throttle Body
  • Bosch Dead Headed Fuel Rail
  • Bosch LS7 Fuel Injectors
  • Mast 8 Layer Air Filter with IAT Bung
  • Intake Air Temperature Sensor 560-2218
  • 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 Starter
  • GM Oil Filter
  • Mobil 1 Synthetic Oil
  • Engine Break in Oil Additive
  • Your choice of F-Body, Y-Body, or Truck Water Pump, Balancer, and Oil Pan

    Runs on Premium 91-93 Octane
  • Application List

    Universal

    Shipping Information

    • Item Requires Shipping
    • 500.0 lbs.
    • FREE 48 State Shipping

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