The BluePrint Engines GM LS Compatible 376 C.I. Builder Series Engine & 4L65/70E Automatic Transmission Package delivers a complete turnkey LS drivetrain engineered for modern performance, reliability, and straightforward installation. Producing 530 horsepower and 495 ft.-lbs. of torque, this package pairs BluePrint's proven 376 C.I. LS-compatible engine with a 4L65/70E electronically controlled automatic transmission, making it an outstanding choice for pro touring builds, muscle cars, street rods, and custom LS swap projects.

The engine is built around BluePrint's high-strength LSX-style cast iron block and features BluePrint aluminum cylinder heads, hypereutectic pistons, a nodular iron crankshaft, forged connecting rods, and a hydraulic roller camshaft designed to provide outstanding throttle response, broad power delivery, and dependable street performance. Fuel and ignition are managed by the included Holley Terminator X Max Gen IV EFI System, complete with ECU, wiring harness, sensors, and BluePrint's preloaded calibration for simplified installation and excellent drivability.

The included 4L65/70E Automatic Transmission Package features an electronic transmission controller, 2200-2400 RPM stall torque converter, flexplate, and starter. Since this is a Standard Edition Builder Series package, no front accessory drive is included, allowing builders to select the pulley system that best fits their application. The engine and transmission ship factory assembled, minimizing installation time and ensuring a professionally matched drivetrain package.

Key Features:

• 376 C.I. GM LS Compatible Builder Series Engine
• 530 Horsepower / 495 ft.-lbs. Torque
• 4L65/70E 4-Speed Automatic Transmission
• Standard Edition Builder Series
• Holley Terminator X Max Gen IV EFI System
• Complete ECU & Engine Wiring Harness
• BluePrint High-Strength LSX-Style Cast Iron 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° Lobe Separation Angle
• Hypereutectic Pistons
• Nodular Iron Crankshaft
• 3.622" Stroke
• Forged 6.098" Connecting Rods
• LS3 Intake Manifold
• Drive-by-Wire Throttle Body
• Fuel Rails & Injectors Included
• Coil Packs, Spark Plugs & Wires Included
• Non-Weighted Harmonic Balancer
• Non-Weighted Flexplate
• No Front Accessory Drive Included
• Premium 91+ Octane Fuel Recommended
• Dyno Tested by BluePrint Engines

Transmission Package Includes:

• GM 4L65/70E Automatic Transmission
• 1996-2008 13-Pin Harness
• Electronic Transmission Controller
• 2200-2400 RPM Stall Torque Converter
• Flexplate
• Starter

Gear Ratios:

• 1st: 3.059:1
• 2nd: 1.625:1
• 3rd: 1.000:1
• 4th: 0.696:1

Fitment Applications:

Designed for custom GM LS-powered vehicles including:

• Chevrolet Camaro LS Swaps
• Pontiac Firebird 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 crossmember, driveshaft length, cooling system, exhaust clearance, and accessory drive selection before installation.

Installation Notes:

• Ships with the engine and transmission factory assembled.
• Includes a Holley Terminator X Max EFI System with BluePrint preloaded calibration. Do not overwrite the supplied ECU calibration by following the standard Holley setup procedure.
• No front accessory drive is included. Accessory drive components must be selected separately.
• BluePrint recommends using Air Intake Kit BPPLS01013 to maintain proper MAF calculations and dyno-tested calibration.
• Recommended fuel: 91+ octane premium gasoline.