The BluePrint Engines GM LS Compatible 376 C.I. Builder Series Engine & TKX 5-Speed Manual Transmission Package delivers the perfect combination of modern LS performance and classic manual shifting enjoyment. Producing 510 horsepower and 440 ft.-lbs. of torque, this turnkey engine and transmission package is engineered for builders who want a complete drivetrain solution for street performance, pro touring, autocross, and restomod projects.

The 376 C.I. LS-compatible engine features a BluePrint high-strength cast iron block, aluminum cylinder heads, a hydraulic roller camshaft, hypereutectic pistons, and a nodular iron crankshaft. Fuel delivery and ignition are controlled by the included Holley Terminator X Max Gen IV EFI System, providing quick starts, smooth drivability, advanced tuning capability, and a fully calibrated ECU from BluePrint Engines.

This Builder Series package ships with a Tremec TKX 5-speed manual transmission already assembled to the engine. Also included are a McLeod Super Street Pro twin-disc clutch, billet flywheel, hydraulic throwout bearing, bellhousing, starter, LS3 cast aluminum intake manifold, injectors, fuel rails, drive-by-wire throttle body, ignition components, and LS swap oil pan. The engine ships without a front accessory drive, allowing builders to customize their accessory layout for their specific application.

Whether you're building a Camaro, Chevelle, Nova, Corvette, C10, G-Body, or custom hot rod, the BLS3768TKX offers a complete engine and transmission combination that simplifies installation while delivering proven BluePrint Engines reliability and performance.

Key Features:

• 376 C.I. GM LS Compatible Builder Series Engine
• 510 Horsepower / 440 ft.-lbs. Torque
• Tremec TKX 5-Speed Manual Transmission (assembled)
• Standard Edition Builder Series
• Holley Terminator X Max Gen IV EFI System
• BluePrint calibrated ECU & wiring harness
• BluePrint high-strength cast iron LS block
• BluePrint aluminum cylinder heads
• 10.7:1 Compression Ratio
• Hydraulic roller camshaft
  • .612" Intake Lift
  • .585" Exhaust Lift
  • 225° Intake Duration @ .050"
  • 238° Exhaust Duration @ .050"
  • 113° LSA
• Nodular iron crankshaft
• 3.622" stroke
• 6.098" connecting rods
• Hypereutectic pistons
• LS3 cast aluminum intake manifold
• Drive-by-wire throttle body
• Fuel injectors & rails included
• Coil packs, spark plugs & wires included
• LS swap oil pan, pickup screen & windage tray included
• Does NOT include front accessory drive
• Requires 91+ octane fuel

Transmission Package Includes:

• Tremec TKX 5-Speed Manual Transmission
• McLeod Super Street Pro Twin Disc Clutch
• Billet Flywheel
• Hydraulic Throwout Bearing
• Bellhousing
• Starter

TKX Gear Ratios

• 1st: 2.87:1
• 2nd: 1.89:1
• 3rd: 1.28:1
• 4th: 1.00:1
• 5th: 0.68:1

Fitment Applications:

Designed for custom GM LS-powered builds including:

• Chevrolet Camaro LS Swaps
• Chevrolet Corvette Projects
• Chevrolet Chevelle Restomods
• Chevrolet Nova Builds
• Chevrolet C10 Trucks
• GM G-Body Applications
• Street Rods
• Pro Touring Vehicles
• Custom Performance Builds

Note: Verify engine mounts, transmission tunnel clearance, crossmember, driveshaft length, hydraulic clutch components, and accessory drive requirements before installation.

Installation Notes:

• Ships with the engine and TKX transmission assembled.
• Holley Terminator X ECU is fully calibrated by BluePrint Engines. Do not overwrite the supplied calibration with the standard Holley base tune.
• BluePrint recommends using Air Intake Kit BPPLS01013 to maintain proper MAF calculations and dyno calibration.
• Package does not include a front accessory drive, allowing builders to install the system of their choice.
• Requires compatible clutch hydraulic plumbing, transmission mount, and driveshaft for the specific vehicle application.