BluePrint Engines Pro Series LS GM 427 Crate Engine Base Dressed 600 HP no ECU/ Harness

For a reliable, LS-compatible assembly with a proven track record, get this LS GM 427 C.I. crate engine (PSLS42750CTF)! Designed by BluePrint Engines, it offers you the performance of a street-ready powerhouse. At its core is an LSX-style block with thicker decks, reinforced webbing, and extended cylinder skirts. Their combined strength makes the assembly exceptionally durable. It's perfect for restomods, street machines, and pro-touring builds.

Features and Benefits:
- LXS-style, high-strength, cast iron engine block with 4.0695" bore
- Operates at 600 horsepower and 530 ft.-lbs. torque
- 11.0:1 compression ratio for aggressive throttle response
- Fuel recommendation: 91+ octane
- Increased deck thickness and strength webbing
- 6-bolt main offers stronger bottom end for high-HP applications
- 1-piece rear main seal ensures stronger, leak-free security
- Improved water jacket design for better flow efficiency and temperature control
- Priority main oiling for more stable oil pressure
- Extended cylinder skirt improves piston stability for stronger high-load durability
- Block uses OEM LS3 front and rear covers
- Built-in BluePrint Engines LS3 cylinder heads made of aluminum
- Forged steel crankshaft with 4.125" stroke and forged 6.125" connecting rods
- Forged pistons for incredible strength and impact resistance
- Rotating assembly is internally balanced for smoother, more stable operation
- Hydraulic roller cam. for lower maintenance and better strength than flat tappet cam.
- Backed by BluePrint Engines' 30-month/50,000-mile warranty

Also Includes:
- LS3 fabricated intake manifold and fuel rail
- Drive-by-wire throttle body
- Valve covers
- Retro fit oil pan
- Timing cover
- Harmonic balancer
- Coil packs
- Spark plugs and wires
- Water pump
- Injectors

Cylinder Head Specifications:
- 69cc chambers
- 2.165" intake / 1.590" exhaust valves
- 259cc intake / 102cc exhaust runners

Camshaft Specifications:
- .624" intake / .624" exhaust lift
- 239 degrees intake / 255 degrees exhaust duration
- @ .050-114 degrees lobe separation

Tech Tip:
- BluePrint Engines recommends using a 2200+ RPM stall converter with this engine
- They also recommend using their air intake kit sold under part number BPPLS01013

Additional Notes:
- Not for use in pollution-controlled vehicles or in dry sump applications.
- This is a dressed long block only. It does NOT include an engine controller, harness, or ECU. It is intended for customers who wish to use their own engine controller package.
- This engine requires a non-weighted flex plate/flywheel.
- The retro fit oil pan will fit most 1955-1995 GM front engines, RWD, and V8 cars.