BluePrint Engines Base Dressed 500 HP Carbureted GM 400 Small-Block Crate Engine

Hit the road hard with this 500-horsepower GM 400 small-block crate engine! Engineered by BluePrint Engines, it delivers a sharp throttle response and plenty of top-end power. Forged internals and aluminum cylinder heads then keep it strong, so you can push it to its limit.

Features and Benefits:
- High-strength, cast iron engine block with 4.125” bore
- Operates at 500 horsepower and 500 ft.-lbs. torque
- 10.3:1 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
- Block is drilled and tapped for clutch linkage
- Uses Holley Double Pumper 800-CFM carburetor with manual choke
- Built-in BluePrint Engines performance cylinder heads made of aluminum
- Dual-plane, satin aluminum-finished intake manifold
- Forged steel crankshaft with 3.750" stroke and 5.700" rods with 150,000 PSI bolts
- Forged pistons for incredible strength and impact resistance
- Rotating assembly: internally balanced front, externally balanced rear
- Hydraulic roller cam. for lower maintenance and better strength than flat tappet cam.
- Ignition timing: 10-16° initial, 32-34° total at 3500 RPM
- Includes mechanical fuel pump provision and passenger-side dipstick
- Backed by BluePrint Engines' 30 month/50,000-mile warranty

Also Includes:
- Valve covers
- Oil pan
- Timing cover
- Distributor

Cylinder Head Specifications:
- 64cc chambers
- 2.08" intake / 1.60" exhaust valves
- 220cc intake / 67cc exhaust runners

Camshaft Specifications:
- .553” intake / .576” exhaust lift
- 236° intake / 242° exhaust duration
- @ .050-110° lobe separation

Additional Notes:
- Not designed for EGR use.
- The cylinder heads feature a .500" raised exhaust port vs OEM casting. Please verify header and exhaust clearance prior to installation.
- The aftermarket intake manifold installed on this engine may not be compatible with OEM accessory brackets that use intake-mounted bosses.