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. Designed for enthusiasts who want maximum control and big-cubic-inch performance, this Standard Edition Builder Series combination delivers 605 horsepower and 565 lb-ft of torque while pairing a powerful 427 LS-compatible engine with a proven T56 six-speed manual transmission.

Built around BluePrint Engines’ high-strength LSX-style cast iron block, this 427 c.i. engine features forged internals, LS3-style aluminum cylinder heads, and a hydraulic roller camshaft for reliable high-performance operation. The included Holley Terminator X Max Gen IV EFI System provides modern electronic fuel control, complete ECU and harness integration, and simplified tuning capability for custom LS swap applications.

The included T56 manual transmission package delivers six-speed performance with a complete clutch and drivetrain package, making this combination ideal for Camaro, Firebird, Corvette, Pro-Touring, restomod, and classic GM muscle car builds where driver engagement and horsepower are the priority.

Key Features:

• Complete GM LS-compatible engine and T56 manual transmission package
• 427 cubic inch displacement
• 605 horsepower
• 565 lb-ft torque
• BluePrint Engines LSX-style high-strength cast iron block
• Increased deck thickness and reinforced block structure
• OEM LS3 front and rear cover compatibility
• Priority main oiling system
• Six-bolt main design
• One-piece rear main seal
• BluePrint aluminum LS3-style cylinder heads
• 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
• Recommended fuel: 91+ octane
• 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 restomod builds
• Chevrolet Nova LS conversions
• GM Pro-Touring builds
• Classic muscle car LS swaps
• Street rods
• Custom LS performance vehicles

Installation Notes:

• Verify engine bay clearance, transmission tunnel clearance, and shifter location before installation.
• Additional swap components may be required depending on application:
  • Engine mounts
  • Transmission crossmember
  • Driveshaft modification
  • Cooling system upgrades
  • Fuel system upgrades
  • Exhaust modifications
  • Wiring integration
• Holley Terminator X ECU is fully calibrated by BluePrint Engines. Follow BluePrint calibration recommendations instead of standard Holley EFI setup procedures.
• Engine/transmission package ships assembled.