Click on image to zoom

MTM111-302 - Mast Motorsports Naturally Aspirated Crate Engine - LS7 427?SS (650hp), Includes M-90 ECM and Harness

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

111-302
Availability: Special Order Item
Shipping: FREE 48 State Truck Freight Shipping (International shipping will require freight quote)
Pricing: $18,520.25

Customize Your Item

- Additional Shipping Options -
 * required
- Select body style -
 * required
Qty:
Free Shipping!

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 Black Label LS7 285cc 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 LS7 Black Label 285cc Heads
Intake: GMPP LS7 Intake
Valve Springs: Mast Premium 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 Black Label LS7 285cc Heads
  • ARP Head Bolts
  • ARP Main Studs
  • Cometic Head gaskets
  • Mast 3 bolt Custom Hydraulic Roller Cam
  • GMPP Cadillac Hydraulic Roller Lifters
  • Mast Black Label Pushrods
  • Mast Premium Dual Springs
  • Mast Stainless Intake Valves
  • Mast Stainless Exhaust Valves
  • Titanium Retainers
  • Machined Locks
  • M-90 Calibrated ECM
  • Main Wiring Harness
  • Dash 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
  • 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
    Runs on Premium 91-93 Octane
  • Application List

    Universal

    Shipping Information

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

    Customer Reviews

    Comment Total Reviews (0)

    Write the First Review!

    You must login to post a review.


    • We don’t just want your business today. We want to EARN your business for LIFE!
    • USA Owned, Operated & Employed
    • Installers & Resellers Click Here to Apply
    • We Specialize In:
      • GM LS Conversions
      • Engine & Trans Combo Kits
      • Unique Ready to Run Engines
    • Have a question?
    • 888-748-4655 Mon-Fri 8AM-6PM EST
    • Click above for 24/7 Live Chat Service.