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BluePrint Builder Series 632/815HP Blackout Reaper Crate Engine and 4L80E Transmission Combos B632KB4L8X Combo, Edition Series, 632 C.I.D., 815 HP, Carbureted, 4L80E, Chevy, Big Block, Kit

SKU: MLLB632KB4L8X

Engine and Transmission Combos

BluePrint Builder Series 632/815HP Blackout Reaper Crate Engine and 4L80E Transmission Combos B632KB4L8X Combo, Edition Series, 632 C.I.D., 815 HP, Carbureted, 4L80E, Chevy, Big Block, Kit

SKU: MLLB632KB4L8X

Engine and Transmission Combos
A$66,116.16
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

BluePrint Builder Series 632/815HP Blackout Reaper crate engine and 4L80E transmission combos take away the hassle of properly pairing a carbureted Chevy Gen VI big block 454 performance engine and 4-speed automatic transmission for your build. These powerful assemblies deliver 815 horsepower and 775 lbs.-ft. of torque with BluePrint aluminum cylinder heads and hydraulic roller camshaft to go with forged pistons, a forged crankshaft, and forged connecting rods. The front accessory drive includes the alternator, power steering pump, A/C compressor, and water pump for the cast iron block which features a tall deck. When you are looking for a new powertrain, go with the authority in crate engines and order your very own BluePrint Builder Series 632/815HP Blackout Reaper crate engine and 4L80E transmission combo.

More product features and details include:

* Compression ratio of 11.0:1
* Camshaft offers 0.698 in. intake/exhaust lift with 272 intake and 282 exhaust duration at 0.050 in. lift and a 110 LSA
* Stroke is 4.750 in. with 6.635 in. long connecting rods
* Block is a one-piece rear main seal, 4-bolt main setup with a 4.600 in. bore and mechanical fuel pump provision
* Rotating assembly is internally balanced and features H-beam connecting rods
* BluePrint PS8012 cylinder heads provide a 119cc combustion chamber, 2.300 in. intake and 1.880 in. exhaust valves, plus 358cc intake/125cc exhaust runners and a 0.300 in. raised exhaust port (compared to OEM casting)
* This combo also includes the 1,250 cfm carburetor, electric fuel pump, single plane satin finished aluminum intake manifold, spark plugs/wires, valve covers, Pro Billet distributor, harmonic balancer, thermostat with housing, and an oil pan
* Spark plug model BPP7938 NGK 7938 BKR5E (0.750 in. reach, 14mm thread, 5/8 in. hex, plug; gapped to 0.035 in.)
* Harmonic balancer is non-weighted

Transmission features and details include:

* Electronic transmission controller
* Lockup capable
* Torque converter with 3,800-4,200 rpm advertised stall rating
* Flexplate (non-weighted) and starter
* Gear ratios are 2.482:1 (first), 1.482:1 (second), 1.000:1 (third), 0.750:1 (fourth), and 2.077:1 (reverse)
* Builder's responsibility to verify clearances for exhaust routing, shift linkage, steering components, etc.
* Low profile front accessory design may require fabrication for power steering hoses, alternator wiring, and any additional fittings

Other notes:

* Recommended fuel is 91 octane and recommended break-in oil is BPP710
* Initial timing is 10-16 degrees
* Total timing is 32-34 degrees by 2,500 rpm
* Firing order is 1-8-4-3-6-5-7-2
* Not for EGR
* Recommended headers include those made by Ultimate Headers, Hedman Husler race headers, and Sanderson headers

Part Type

Engine and Transmission Combos

Data: v4.2 - Upd: 2026-09-27 14:39:21

Specifications

Product Attributes - Brand
BluePrint Engines
Product Attributes - Manufacturer's Part Number
B632KB4L8X
Product Attributes - Part Type
Engine and Transmission Combos
Product Attributes - Product Line
BluePrint Builder Series 632/815HP Blackout Reaper Crate Engine and 4L80E Transmission Combos
Product Attributes - UPC
00887753972859
Product Attributes - Crate Engine Family
Chevy Big Block
Product Attributes - Engine Assembly Style
Long block
Product Attributes - Assembled
Yes
Product Attributes - Intake Manifold Included
Yes
Product Attributes - Carburetor Included
Yes
Product Attributes - Throttle Body Included
No
Product Attributes - Cylinder Heads Included
Yes
Product Attributes - Cylinder Head Material
Cast aluminum
Product Attributes - Distributor Included
Yes
Product Attributes - Oil Pan Included
Yes
Product Attributes - Valve Covers Included
Yes
Product Attributes - Timing Cover Included
Yes
Product Attributes - Water Pump Included
Yes
Product Attributes - Harmonic Balancer Included
Yes
Product Attributes - Spark Plugs Included
Yes
Product Attributes - Spark Plug Wires Included
Yes
Product Attributes - Flexplate Included
Yes
Product Attributes - Flywheel Included
No
Product Attributes - Transmission Controller Included
Yes
Product Attributes - Torque Converter Included
Yes
Product Attributes - Wiring Harness Included
No
Product Attributes - Computer Included
No
Product Attributes - Quantity
Sold as a kit.

Reference Information

Brand Name/s Blueprint Engines
StreetFX SKU mllB632KB4L8X
SFX Item ID 5182754
Supplier Item Code 5182754
Manufacturer SKU B632KB4L8X
Manufacturer UPC 887753972859
Alternative References 632/815HP, 4L80E

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1991
    Ending Year1995
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen V
    Fuel Delivery TypeFuel injection
    TransmissionAutomatic
    Transmission Manufacturer Code4L80-E
  • MakeCHEVROLET
    Beginning Year1996
    Ending Year2000
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen VI
    Fuel Delivery TypeFuel injection
    TransmissionAutomatic
    Transmission Manufacturer Code4L80-E

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