Hawks Motorsports offers the BluePrint Engines BP49611CT GM Big Block Compatible 496 C.I. Power Adder Long Block, engineered specifically for supercharged, turbocharged, and nitrous-assisted applications. Producing 561 horsepower and 580 lb-ft of torque in naturally aspirated form, this premium long block features a forged rotating assembly, lower compression ratio, and heavy-duty internal components designed to withstand the increased cylinder pressures created by forced induction and power adders.

Built around a new BluePrint cast iron 4-bolt main block, the BP49611CT features a 4.310-inch bore, 4.250-inch forged steel crankshaft, 6.385-inch forged H-beam connecting rods, and forged dished pistons producing a 9.0:1 compression ratio. BluePrint aluminum cylinder heads and a hydraulic roller camshaft provide excellent airflow and durability while leaving plenty of room for additional boost or nitrous without sacrificing reliability.

The long block arrives assembled with aluminum cylinder heads, hydraulic roller camshaft, timing cover, harmonic balancer, oil pan, valve covers, and dipstick installed. Builders can complete the engine with their preferred intake manifold, carburetor or EFI system, ignition, and accessory drive components. Every BluePrint engine is precision machined, professionally assembled, and dyno tested before shipment, then backed by BluePrint Engines' 30-Month / 50,000-Mile Warranty.

Key Features:

• SKU: BP49611CT
• GM Big Block Compatible 496 C.I. Power Adder Long Block
• 561 Horsepower
• 580 lb-ft Torque
• Designed for supercharger, turbocharger, and nitrous applications
• New BluePrint cast iron block
• 4-bolt main block
• 4.310" bore
• 4.250" stroke
• Forged steel crankshaft
• Forged 6.385" H-beam connecting rods
• Forged dished pistons
• 9.0:1 compression ratio
• BluePrint aluminum cylinder heads
• Hydraulic roller camshaft
• Camshaft Specifications:
  • .620" Intake Lift
  • .630" Exhaust Lift
  • 242°/248° Duration @ .050"
  • 114° Lobe Separation Angle
• 2.250" intake / 1.880" exhaust valves
• Internal engine balance
• 1-piece rear main seal
• Mechanical fuel pump provision
• Harmonic balancer installed
• Timing cover installed
• Valve covers installed
• Oil pan installed
• Dipstick installed
• Dyno tested before shipment
• Manufactured and machined in the USA
• 30-Month / 50,000-Mile Warranty

Fitment Applications:

Designed for custom GM Big Block Chevrolet compatible applications, including:

• Chevrolet Camaro
• Chevrolet Chevelle
• Chevrolet Nova
• Chevrolet El Camino
• Chevrolet Corvette
• Chevrolet C10, C20 & C30 Pickup
• Street rods
• Pro Touring builds
• Drag racing vehicles
• Forced induction street builds
• Marine applications
• Custom high-performance BBC engine builds

Verify engine mount, oil pan, accessory drive, induction system, and drivetrain compatibility before ordering.

Installation Notes:

• Long block assembly only.
• Intake manifold not included.
• Carburetor or EFI system not included.
• Distributor not included.
• Water pump not included.
• Front accessory drive not included.
• Flywheel/Flexplate sold separately.
• Designed for naturally aspirated or power-adder applications.
• Premium 91-octane or higher fuel is required for naturally aspirated operation; higher octane fuel may be required when using forced induction or nitrous.
• Professional tuning is required when installing superchargers, turbochargers, or nitrous oxide systems.