Bring modern LS performance and classic driving excitement together with the BluePrint Engines GM LS Compatible 427 c.i. Engine and TKX Manual Transmission Package. Designed for enthusiasts who demand big-cubic-inch power with a true manual gearbox, this Standard Edition Builder Series combination delivers 585 horsepower and 520 lb-ft of torque while pairing a forged-internals 427 LS-compatible engine with a Tremec TKX 5-speed manual transmission.

The 427 c.i. LS-compatible engine features BluePrint’s high-strength LSX-style cast iron block, LS3-style aluminum cylinder heads, forged crankshaft, forged pistons, hydraulic roller camshaft, and an 11:1 compression ratio for strong street and performance capability. The included Holley Terminator X Max Gen IV EFI System provides precise fuel control, complete ECU/harness integration, and BluePrint-calibrated tuning for dependable LS swap performance.

Finished with a black pulley kit, this package provides a clean, aggressive underhood appearance while including a complete TKX transmission package with clutch, hydraulic throw-out bearing, bell housing, billet flywheel, and starter. This drivetrain is ideal for Camaro, Firebird, Corvette, Pro-Touring, restomod, and classic GM performance builds.

Key Features:

• Complete GM LS-compatible engine and TKX manual transmission package
• 427 cubic inch displacement
• 585 horsepower
• 520 lb-ft torque
• Tremec TKX 5-speed manual transmission
• Black pulley kit
• BluePrint Engines LSX-style high-strength cast iron block
• Increased deck thickness and reinforced strength webbing
• OEM LS3 front and rear cover compatibility
• Priority main oiling system
• Six-bolt main design
• One-piece rear main seal
• BluePrint LS3 aluminum 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
• GM plastic intake manifold
• Drive-by-wire throttle body
• Fuel injectors and fuel rails
• Coil packs, sensors, spark plugs, and wires
• Harmonic balancer included
• TKX transmission package includes:
  • McLeod Super Street Pro twin-disc clutch
  • Hydraulic throw-out bearing
  • Bell housing
  • Billet flywheel
  • Starter
• Recommended fuel: 91+ octane

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 vehicles
• Classic muscle car LS swaps
• Street rods
• Custom LS performance builds

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 Terminator X ECU is fully calibrated by BluePrint Engines. Follow BluePrint calibration recommendations rather than standard Holley EFI setup procedures.
• Retro-fit oil pan fits most 1955-1995 GM front-engine, rear-wheel-drive V8 applications.
• Not intended for pollution-controlled vehicles or dry sump applications.
• Engine/transmission package ships assembled.