BluePrint Engines 775 HP Long Block Power Adder GM 632 Big-Block Crate Engine
Highlights
- Perfect for Forced Induction
- Makes 775 Horsepower (NA)
- Built-In Dual Keyway Damper
- Includes Balancer
BluePrint Engines 775-Horsepower Long Block Power Adder GM 632 Big-Block Crate Engine.
If you’re looking for a crate engine that can handle any type of forced induction, look no further. BluePrint Engines’ Power Adder GM 632 big-block crate engine is what you need! The block is made of high strength cast iron, ensuring ample strength and reliability. The cylinder heads and rotating assembly are then reinforced with tough, quality hardware to maintain proper sealing.
Features and Benefits:
- High-strength, tall-decked, cast iron engine block with 4.600” bore
- Operates at 775 horsepower and 750 ft.-lbs. torque (naturally aspirated)
- 9.6:1 compression ratio for crisp throttle response while staying pump-gas friendly
- 4-bolt main offers stronger bottom end for high-HP applications
- 1-piece rear main seal ensures stronger, leak-free security
- Built with a dual keyway damper and includes balancer
- Built-in BluePrint Engines performance cylinder heads made of aluminum
- MLS head gaskets provide reliable sealing under higher heat and cylinder pressure
- Forged crankshaft with 4.750" stroke and 6.635" connecting rods
- Rods use H-beam design, great for high-RPM and nitrous use
- Mahle Motorsports forged pistons for incredible strength and impact resistance
- Uses precision-gapped piston rings to maintain proper sealing under boost or nitrous
- Rotating assembly is internally balanced for smoother, more stable operation
- ARP 2000 Series fasteners add strength and clamping force
- Hydraulic roller cam. for lower maintenance and better strength than flat tappet cam.
Naturally aspirated, it’s capable of producing 775 horsepower and 750 ft.-lbs. of torque. Combine it with nitrous, turbos, or a supercharger as you see fit to pack a bigger punch! It’s complete with a dual keyway damper and balancer.
Also Includes:
- Valve covers
- Oil pan
- Timing cover
Cylinder Head Specifications:
- 119cc chambers
- 2.30" intake / 1.88" exhaust valves
- 358cc intake / 125cc exhaust runners
Camshaft Specifications:
- .698” intake / .698” exhaust lift
- 272 degrees intake / 282 degrees exhaust duration
- @ .050-110 degrees lobe separation
Additional Notes:
- Not designed for EGR use.
- This engine is built and designed to run on 92 octane pump gas for street use only. For racing or extended wide-open throttle use, race fuel (100+ octane) is required.
- BluePrint Motorsports engines are built for maximum performance and are intended for extreme duty applications. Because of the high-stress nature of their use, these engines are sold without any warranty, expressed, or implied.
- The cylinder heads feature a .300" raised port vs OEM casting. Please verify header-to-exhaust clearance prior to installation.
California Residents: Proposition 65 Warning
Related Categories: C10 Crate Engines & Cylinder Blocks, C10 Restomod Engine, C/K Engine, C/K Restomod
Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:
- 1965 and older U.S. manufactured California certified vehicles
- 1967 and older U.S. manufactured federally certified vehicles
Installation Difficulty

Advanced skill is required for this installation.
Installation Instructions
Vehicle Fitment
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