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MTM117-307 - Mast Motorsports Turn-Key LS7 427 SS Black Label with FAST Intake and A.R.E. Dry Sump (675hp), NO ECM or Harness

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

Availability: Special Order Item
Shipping: FREE 48 State Shipping
Pricing: $21,995.95

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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 Black Label LS7 305cc cylinder heads and FAST LS7 intake manifold. ARP fasteners are used throughout and Mast Black Label pushrods ride on GM Cadillac High RPM hydraulic roller lifters. The oiling system is a 4 Stage ARE dry sump and will ensure the engine is adequately lubricated at all times. 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 Black Label LS7 305cc Heads
Intake: FAST LS7 Intake
Valve Springs: Mast Premium Dual Springs

Engine Components:
  • LS7 Aluminum Block
  • Plateau Honed to 4.125
  • True Surfaced Deck
  • Engine Block Deburred
  • Blueprinted Shortblock
  • Clevite Rod and Crank Bearings
  • Callies Forged 4.000” Stroked Crankshaft
  • Callies Forged H-Beam Connecting Rods
  • Custom Mahle Motorsports Pistons
  • Mast Black Label LS7 305cc Heads
  • ARP Head Bolts
  • ARP Main Studs
  • Cometic Head Gaskets
  • Mast 3 Bolt Hydraulic Roller Cam
  • GMPP Cadillac Hydraulic Roller Lifters
  • Mast Black Label Pushrods
  • Mast Premium Dual Springs
  • Mast Hollow Stem Intake Valves
  • Mast Exhaust Valves
  • Titanium Retainers
  • Machined Locks
  • MAP/IAT Harness
  • Bosch EGO Sensor
  • Fuel Pump Harness
  • Fan Harness
  • FAST 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
  • 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 and Balancer
  • ARE 4-Stage Dry Sump Oiling System
  • Application List



    • 117-307
    • 117-307
    • Mast Motorsports
    • Special Order Item
    • New

    Shipping Information

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

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