Take your LS swap build to the next level with the BluePrint Engines GM LS Compatible 427 c.i. Engine and T56 Manual Transmission Package. Combining big-cubic-inch LS power with the driver engagement of a six-speed manual transmission, this Standard Edition Builder Series package delivers 585 horsepower and 520 lb-ft of torque for high-performance street, Pro-Touring, and restomod applications.

The 427 c.i. LS-compatible engine features a BluePrint high-strength LSX-style cast iron block, aluminum cylinder heads, forged rotating assembly, and hydraulic roller camshaft designed for reliable high-output performance. The included Holley Terminator X Max Gen IV EFI System provides advanced fuel management, ECU control, and simplified tuning for modern LS swap installations.

Paired with a complete T56 six-speed manual transmission package, this drivetrain includes a McLeod Super Steel Pro dual-disc clutch, steel bell housing, billet flywheel, engine guard, and starter for a complete performance solution. Ideal for Camaro, Firebird, Corvette, classic GM muscle cars, and custom LS swap builds.

Key Features:

• Complete GM LS-compatible engine and T56 manual transmission package
• 427 cubic inch displacement
• 585 horsepower
• 520 lb-ft torque
• BluePrint Engines LSX-style high-strength cast iron block
• OEM LS3 front and rear cover compatibility
• 6-bolt main design
• Priority main oiling system
• Improved water jacket design
• Extended cylinder skirt
• BluePrint aluminum LS cylinder heads
  • 70cc chambers
  • 2.165" intake valves
  • 1.590" exhaust valves
• 11:1 compression ratio
• Forged rotating assembly:
  • Forged crankshaft
  • Forged pistons
  • Forged 6.125" connecting rods
• 4.125" stroke crankshaft
• Hydraulic roller camshaft:
  • .624" intake lift
  • .624" exhaust lift
  • 239° intake duration @ .050"
  • 255° exhaust duration @ .050"
  • 114 LSA
• Holley Terminator X Max Gen IV EFI System
• Complete ECU and wiring harness
• BluePrint calibrated EFI programming
• T56 six-speed manual transmission package
• McLeod Super Steel Pro dual-disc clutch
• Steel bell housing
• Billet flywheel
• Starter included
• Engine guard included
• 91+ octane fuel recommended
• Front accessory drive not included

Fitment Applications:

• 1982-2002 Chevrolet Camaro LS swap builds
• 1982-2002 Pontiac Firebird LS swap builds
• Chevrolet Corvette LS conversions
• Chevrolet Chevelle LS restomod builds
• Chevrolet Nova LS conversions
• GM Pro-Touring builds
• Classic muscle car LS swaps
• Street rods
• Custom performance vehicles

Installation Notes:

• Verify engine bay clearance, transmission tunnel clearance, and shifter placement before installation.
• Additional swap components may be required depending on vehicle application:
  • Engine mounts
  • Transmission crossmember
  • Driveshaft modification
  • Cooling system upgrades
  • Fuel system upgrades
  • Exhaust modifications
  • Wiring integration
• Holley EFI ECU is calibrated by BluePrint Engines. Do not use standard Holley base calibration procedures for this package.
• Engine/transmission package ships assembled.
• Not intended for pollution-controlled vehicles or dry sump applications.