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BLS4273TKX GM LS Compatible 427 c.i. Engine and TKX Manual Transmission - 605 Horsepower - Standard Edition Builder Series - Holley Terminator X EFI System - BluePrint Engines

BLS4273TKX GM LS Compatible 427 c.i. Engine and TKX Manual Transmission - 605 Horsepower - Standard Edition Builder Series - Holley Terminator X EFI System - BluePrint Engines

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SKU:
BLS4273TKX
Width:
60.00 (in)
Height:
30.00 (in)
Depth:
30.00 (in)
Shipping:
Calculated at Checkout
Price: $24,099.00

Product Description:

Experience modern LS performance with the engagement of a true manual transmission using the BluePrint Engines GM LS Compatible 427 c.i. Engine and TKX Manual Transmission Package. This Standard Edition Builder Series combination delivers 605 horsepower and 565 lb-ft of torque, pairing a high-performance 427 cubic inch LS-compatible engine with a Tremec TKX 5-speed manual transmission for a powerful and driver-focused drivetrain package.

Built for serious street performance, the 427 c.i. engine features a BluePrint high-strength LSX-style cast iron block, aluminum cylinder heads, forged rotating assembly, hydraulic roller camshaft, and an Holley Terminator X Max Gen IV EFI System for precise fuel control, easy tuning, and reliable drivability.

The included Tremec TKX 5-speed manual transmission provides modern shifting performance in a compact package, making this drivetrain ideal for Camaro, Firebird, Corvette, Pro-Touring, restomod, and classic GM swap applications. The complete engine/transmission package ships assembled for simplified installation.

Key Features:

  • Complete GM LS-compatible engine and TKX manual transmission package
  • 427 cubic inch displacement
  • 605 horsepower
  • 565 lb-ft torque
  • Tremec TKX 5-speed manual transmission
  • BluePrint Engines high-strength LSX-style cast iron block
  • OEM LS3 front and rear cover compatibility
  • BluePrint aluminum LS 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
  • Integrated touchscreen handheld controller
  • BluePrint calibrated EFI tune
  • 91+ octane fuel recommended
  • Standard Edition Builder Series configuration
  • No front accessory drive included

Fitment Applications:

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

Installation Notes:

  • Verify engine bay clearance, transmission tunnel clearance, and shifter location before installation.
  • Additional swap components may be required:
    • Engine mounts
    • Transmission crossmember
    • Driveshaft modification
    • Cooling system upgrades
    • Fuel system upgrades
    • Exhaust modifications
    • Wiring integration
  • Holley Terminator X ECU is calibrated by BluePrint Engines; use BluePrint calibration recommendations rather than standard Holley base settings.
  • Engine/transmission package ships assembled. 

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