BluePrint Engines Pro Series GM 540 Big-Block Crate Engine Carbureted Based Dressed 670 HP

Whether you’re building a high-power restomod or a nitrous-fed rig, BluePrint Engines has got you covered. At 670 horsepower, this GM 540 big-block crate engine has the strength serious builds demand. Built with all around forged internals, it’s uncompromising in muscle and performance.

Features and Benefits:
- High-strength, standard deck, cast iron engine block with 4.500” bore
- Operates at 670 horsepower and 660 ft.-lbs. torque
- 10.1:1 compression ratio for stronger throttle response and crisp performance
- 4-bolt main offers stronger bottom end for high-HP applications
- 1-piece rear main seal ensures stronger, leak-free security
- Uses Holley Double Pumper 850-CFM carburetor with manual choke
- Built-in BluePrint Engines Muscle Series cylinder heads made of aluminum
- New forged steel crankshaft with 4.250" stroke and forged 6.385" connecting rods
- Rods use H-beam design, great for high-RPM and nitrous use
- 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.
- Includes mechanical fuel pump provision
- Backed by BluePrint Engines' 30-month/50,000-mile warranty

Also Includes:
- Intake manifold
- Valve covers
- Oil pan
- Timing cover
- Pro Series Ready Run distributor
- Harmonic balancer
- Spark plugs and wires

Cylinder Head Specifications:
- 119cc chambers
- 2.30" intake / 1.88" exhaust valves
- 316cc intake / 124cc exhaust runners

Camshaft Specifications:
- .647” intake / .647” exhaust lift
- 248 degrees intake / 254 degrees exhaust duration
- @ .050-112 degrees lobe separation

Additional Notes:
- Not designed for EGR use.
- The cylinder heads feature a .300" raised exhaust port vs an OEM casting. Please verify clearance prior to installation.