The BluePrint Engines GM LS Compatible 427 c.i. Engine and 4L80E Automatic Transmission Package delivers uncompromising supercharged LS performance with the strength of a heavy-duty automatic transmission. Designed for Pro-Touring builds, high-performance street cars, restomods, and custom LS swaps, this Standard Edition Builder Series package combines an 830 horsepower 427 c.i. LS-compatible engine, Magnuson TVS2650 supercharger, performance-built 4L80E automatic transmission, and Holley Terminator X Max EFI System into a complete turnkey drivetrain solution.

The 427 c.i. LS-compatible engine is built around a high-strength BluePrint cast iron block with premium aluminum cylinder heads, a forged rotating assembly, hydraulic roller camshaft, and a 9.5:1 compression ratio optimized for forced induction. The forged crankshaft, forged pistons, and forged connecting rods provide exceptional durability while the Magnuson TVS2650 supercharger delivers instant boost, outstanding throttle response, and tremendous torque throughout the RPM range.

The included Holley Terminator X Max Gen IV EFI System provides complete engine and transmission management through a BluePrint-calibrated ECU and wiring harness. Paired with a performance-built 4L80E automatic transmission, this package is designed to reliably handle extreme horsepower for both street and track applications.

Key Features:

• Complete GM LS-compatible engine and 4L80E automatic transmission package
• 427 cubic inch displacement
• 830 horsepower
• 800 lb-ft torque
• Standard Edition Builder Series
• Magnuson TVS2650 supercharger
• Holley Terminator X Max Gen IV EFI System
• BluePrint calibrated ECU and wiring harness
• High-flow aluminum cylinder heads
• 9.5:1 compression ratio
• Heavy-duty LS-compatible cast iron block
• Six-bolt main design
• Priority main oiling system
• One-piece rear main seal
• Improved water jacket design
• OEM LS3 front and rear cover compatibility

Engine Internals:

• Forged steel crankshaft
• Forged pistons
• Forged 6.125" H-beam connecting rods
• 4.125" stroke crankshaft
• Hydraulic roller camshaft
• High-performance valve springs
• Hardened pushrods
• Roller rocker arms
• High-flow fuel injectors
• Drive-by-wire throttle body
• Coil packs
• Sensors
• Spark plugs and wires
• Water pump
• Harmonic balancer
• Oil pan
• Valve covers

Supercharger System:

• Magnuson TVS2650 positive displacement supercharger
• Integrated intercooler system
• Instant boost response
• High-efficiency airflow design
• Excellent low-RPM torque
• Designed for premium pump fuel

Holley Terminator X Max EFI:

• Terminator X Max Gen IV ECU
• Complete engine and transmission wiring harness
• BluePrint performance calibration
• Electronic fuel injection management
• Advanced tuning and data logging

4L80E Automatic Transmission Package:

• Performance-built 4L80E four-speed automatic transmission
• Electronic transmission controller
• 3000+ stall torque converter
• Flexplate included
• Starter included

4L80E Gear Ratios:

• 1st: 2.48:1
• 2nd: 1.48:1
• 3rd: 1.00:1
• 4th: 0.75:1
• Reverse: 2.08:1
• Recommended fuel: Premium 91+ octane

Fitment Applications:

• 1982-2002 Chevrolet Camaro LS swap builds
• 1982-2002 Pontiac Firebird LS swap builds
• Chevrolet Corvette LS conversions
• Chevrolet Chevelle Pro-Touring builds
• Chevrolet Nova LS conversions
• GM muscle car restorations
• Restomod builds
• Custom LS-powered street vehicles
• High-performance street and drag racing applications

Installation Notes:

• Verify engine bay and hood clearance due to the Magnuson TVS2650 supercharger.
• Additional swap components may be required:
  • Engine mounts
  • Transmission crossmember
  • Driveshaft modification
  • High-capacity cooling system
  • Upgraded fuel system
  • Custom exhaust system
  • Wiring integration
  • Rear axle/driveline upgrades
• Holley Terminator X Max ECU is pre-calibrated by BluePrint Engines.
• BluePrint recommends the specified intake system to maintain proper MAF calibration.
• Engine and transmission package ships assembled and ready for installation.
• Intended for off-road and exempt applications where permitted.