Hawks Motorsports offers the BluePrint Engines B632KB4L8X GM Big Block Compatible 632 C.I. Pro Series Engine and 4L80E Automatic Transmission Package, delivering an incredible 815 horsepower and 775 lb-ft of torque in a complete Builder Series drivetrain package featuring the exclusive Blackout Reaper Edition. Combining BluePrint's legendary 632 cubic inch Pro Series engine with a fully assembled 4L80E automatic transmission, this package delivers extreme naturally aspirated performance with a sinister all-black appearance and modern overdrive capability.

Built around BluePrint's high-strength tall deck cast iron block, the engine features 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 produce outstanding low-end torque and broad power throughout the RPM range, making this package ideal for Pro Touring, street/strip, and high-performance muscle car builds.

The Blackout Reaper Edition adds an aggressive murdered-out appearance with black valve covers, black front accessory drive, black pulley kit, black distributor, and coordinated engine components. A 1250 CFM carburetor, satin single-plane intake manifold, Ready-to-Run distributor, electric fuel pump, and complete front accessory drive make this an installation-ready package for serious builders.

Included is a professionally assembled 4L80E automatic transmission package with electronic controller, lockup capability, high-stall torque converter, starter, and flexplate. Every BluePrint Builder Series package is precision machined, professionally assembled, and dyno tested before shipment, providing confidence for high-horsepower street and competition applications.

Key Features:

• SKU: B632KB4L8X
• 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
• Standard Builder Series Package
• Carbureted Configuration
• 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
• Internally Balanced Rotating Assembly
• 11.0:1 Compression Ratio
• BluePrint Aluminum Cylinder Heads (PS8012)
• Hydraulic Roller Camshaft
• Camshaft Specifications:
  • .698" Intake Lift
  • .698" Exhaust Lift
  • 272° Intake Duration @ .050"
  • 282° Exhaust Duration @ .050"
  • 110° Lobe Separation Angle
• Holley 1250 CFM Carburetor
• Satin Single Plane Intake Manifold
• Black Pro Series Ready-to-Run Distributor (BPP3503BK)
• Thermostat & Housing Included
• Harmonic Balancer
• Timing Cover
• Valve Covers
• Fuel Pump
• Oil Pump
• Oil Pan

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+ 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:

• 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, header clearance, steering clearance, 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.
• Verify clearance for steering components, shift linkage, exhaust, and chassis before installation.
• Low-profile Black Pulley accessory drive fits many applications but additional hose routing, wiring, or fabrication may be required.
• Includes electronic 4L80E transmission controller.
• Initial Timing: 10°-16° BTDC
• Total Timing: 32°-34°
• Recommended Fuel: 91+ Octane
• Professional installation and tuning strongly recommended.