BluePrint BLS3769SCTKBT56 LS 376 Engine w/ T56 700HP

The BluePrint Engines GM LS Compatible 376ci is a brute-force blend of engineering precision and raw muscle, delivering an astonishing 700 horsepower and 640 lb-ft of torque. At its core, the Magnuson TVS 2650 Supercharger unleashes relentless boost, while the Holley Terminator X Max Gen IV ECU and harness system orchestrate seamless engine control and tuning flexibility. The high-performance EFI system, complete with precision fuel injectors and rail, ensures consistent delivery under extreme loads. Every supporting component—from the oil pan and coil packs to the spark plugs, wires, water pump, and harmonic balancer—is built to endure high-output stress and maintain peak reliability. Mated to the legendary T56 manual transmission, this setup offers a visceral, hands-on driving experience that matches its ferocity. Topped off with the Holley black front pulley kit, this build isn’t just robust—it’s a symphony of strength, control, and unrelenting performance.

Horsepower / Torque:

• 700 Horsepower / 640 ft. lbs. Torque
• Compression Ratio: 9.5:1
• Aluminum Heads (LS3)
• Hydraulic Roller Cam
• Forged Pistons
• Forged Crankshaft

Block:

• High Strength Cast Iron Block
• Increased Deck Thickness and Strength Webbing
• Utilizes OEM LS3 Front and Rear Covers
• Improved Water Jacket Design
• Extended Cylinder Skirt
• 1-Piece Rear Main Seal
• Priority Main Oiling
• 4.0665" Bore
• 6-Bolt Main

Rotating Assembly:

• Forged Crankshaft
• 3.622" Stroke
• 6.125" Forged Connecting Rods (150,000 PSI bolts)
• Forged Pistons
• Internally Balanced Front and Rear

Cylinder Heads:

• BluePrint Aluminum Cylinder Heads - PS8015
• 70cc Chamber
• 2.165" Intake / 1.590" Exhaust Valves
• 259cc Intake / 102cc Exhaust Runners

Cam Specs:

• Hydraulic Roller
• .612 Intake / .585 Exhaust Lift
• 225 Intake / 238 Exhaust Duration
• @.050-113 Degree Lobe Separation

Also Includes:

• LS Swap Oil Pan, Windage Tray, Pick Up Screen
• Fuel Injectors and Rail
• DBW Throttle Body - BPP12191019
• 2.65 Liter Magnuson TVS 2650 Supercharger
• Throttle Pedal and Sensors
• Spark Plugs and Wires
• Harmonic Balancer
• Coil Packs
• Front Accessory Drive (as listed on product page)

T56 Package:

• McLeod Super Steel Pro Dual Disk Clutch; Bell Housing; Billet Flywheel; Engine Guard; Starter

Gear Ratios:

• First 2.66:1; Second 1.78:1; Third 1.30:1; Fourth 1.00:1; Fifth 0.80:1; Sixth 0.63:1

Notes:

• ECU is fully calibrated by BluePrint Engines (do not follow Holley manual for calibration).
• Recommended Air Intake Kit: BPPLS01013.