Hawks Motorsports offers the BluePrint Engines B632FKB4L8X GM Big Block Compatible 632 C.I. Pro Series Engine and 4L80E Automatic Transmission Package, delivering an impressive 815 horsepower and 775 lb-ft of torque in a complete Builder Series drivetrain featuring the exclusive Blackout Reaper Edition. Combining BluePrint's legendary 632 cubic inch Pro Series engine with a fully assembled 4L80E overdrive automatic transmission, this package blends modern electronic fuel injection, premium forged internals, and an aggressive all-black appearance for serious street, Pro Touring, and street/strip builds.

Built around BluePrint's high-strength cast iron tall deck block, the engine utilizes a forged steel crankshaft, forged 6.635-inch H-beam connecting rods, forged dome pistons, BluePrint aluminum cylinder heads, and a hydraulic roller camshaft. The 4.600-inch bore, 4.750-inch stroke, and 11.0:1 compression ratio provide exceptional torque throughout the RPM range while maintaining excellent drivability through the Holley Sniper Stealth 4500 Black Finish EFI system.

The Blackout Reaper Edition Builder Series features black valve covers, black front accessory drive components, black Ready-to-Run distributor, and a complete Black Pulley Kit, creating an aggressive under-hood appearance to match its performance. Combined with the Holley Sniper Stealth EFI system, Aeromotive A1000 fuel pump, and single-plane intake manifold, this engine delivers instant starting, crisp throttle response, and precise fuel control while maintaining the brutal performance expected from a naturally aspirated 632 cubic inch big block.

The included 4L80E automatic transmission package features an electronic transmission controller, lockup torque converter, flexplate, starter, and overdrive gearing for comfortable highway cruising. Every BluePrint Builder Series package is precision machined, professionally assembled, dyno tested, and backed by BluePrint Engines' warranty.

Key Features:

• SKU: B632FKB4L8X
• GM Big Block Compatible 632 C.I. Pro Series Engine
• Complete Engine & 4L80E Automatic Transmission Package
• 815 Horsepower
• 775 lb-ft Torque
• Blackout Reaper Edition Builder Series
• Holley Sniper Stealth 4500 Black Finish EFI
• Black Pulley Kit
• High-Strength Cast Iron Tall Deck Block
• Manufactured and Machined in the USA
• 4-Bolt Main Block
• 1-Piece Rear Main Seal
• Mechanical Fuel Pump Provision
• 4.600" Bore
• 4.750" Stroke
• Forged Steel Crankshaft
• Forged 6.635" H-Beam Connecting Rods
• Forged Dome Pistons (1cc)
• Internally Balanced Rotating Assembly
• 11.0:1 Compression Ratio
• BluePrint Aluminum Cylinder Heads (PS8012)
• Hydraulic Roller Camshaft
• Single Plane Intake Manifold
• Pro Series Ready-to-Run Black Distributor (BPP3503BK)
• Aeromotive A1000 Fuel Pump
• Harmonic Balancer
• Timing Cover
• Black Valve Covers
• Oil Pump
• Oil Pan
• Thermostat & Housing Included
• Dyno Tested Before Shipment

Black Pulley Kit Includes:

• Reverse Rotation Short Water Pump
• 140-Amp One-Wire Alternator
• Peanut Style A/C Compressor
• Type II Power Steering Pump with Remote Reservoir
• Complete Black Front Accessory Drive

4L80E Transmission Package Includes:

• Complete 4L80E Automatic Transmission
• Electronic Transmission Controller
• Lockup Capability
• 3800+ RPM Stall Torque Converter
• Flexplate
• Starter

4L80E Gear Ratios:

• 1st: 2.482
• 2nd: 1.482
• 3rd: 1.000
• 4th: 0.750
• Reverse: 2.077

Fitment Applications:

Designed for custom GM Big Block Chevrolet compatible applications including:

• Chevrolet Camaro
• Chevrolet Chevelle
• Chevrolet Nova
• Chevrolet Corvette
• Chevrolet El Camino
• Chevrolet Impala
• Chevrolet C10 / C20 / C30 Trucks
• Street Rods
• Restomod Builds
• Pro Touring Vehicles
• Classic Muscle Cars
• Street/Strip Applications
• Custom Performance Vehicles

Verify engine bay clearance, transmission tunnel clearance, driveshaft length, crossmember compatibility, steering clearance, header fitment, and cooling system capacity before installation.

Installation Notes:

• Complete engine and transmission package.
• Designed for non-emissions-controlled vehicles.
• Tall deck block is approximately .400" taller and wider than OEM big block dimensions.
• Cylinder heads feature .300" raised exhaust ports requiring compatible headers.
• Holley Sniper Stealth EFI requires a high-pressure EFI fuel system and proper electrical connections.
• Includes electronic 4L80E transmission controller.
• Initial Timing: 10°–16° BTDC
• Total Timing: 32°–34°
• Recommended Fuel: 91+ Octane
• Recommended Oil: BluePrint 10W30
• Oil Capacity: 8 Quarts
• Professional installation and EFI calibration are strongly recommended.