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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$65,374.01
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


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 21:18:05

Data: v4.2 - Upd: 2026-11-09 07:40:41

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Blueprint Engines
StreetFX SKU mllB632KB4L8X
SFX Item ID 5182754
Accounting SKU mll-B632KB4L8X
Manufacturer SKU B632KB4L8X
Manufacturer UPC 00887753972859
Alternative References B632KB4L8X, MLL-B632KB4L8X

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

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

Product Attributes
BrandBluePrint Engines
Manufacturer's Part NumberB632KB4L8X
Part TypeEngine and Transmission Combos
Product LineBluePrint Builder Series 632/815HP Blackout Reaper Crate Engine and 4L80E Transmission Combos
UPC00887753972859
Crate Engine FamilyChevy Big Block
Engine Assembly StyleLong block
AssembledYes
Intake Manifold IncludedYes
Carburetor IncludedYes
Throttle Body IncludedNo
Cylinder Heads IncludedYes
Cylinder Head MaterialCast aluminum
Distributor IncludedYes
Oil Pan IncludedYes
Valve Covers IncludedYes
Timing Cover IncludedYes
Water Pump IncludedYes
Harmonic Balancer IncludedYes
Spark Plugs IncludedYes
Spark Plug Wires IncludedYes
Flexplate IncludedYes
Flywheel IncludedNo
Transmission Controller IncludedYes
Torque Converter IncludedYes
Wiring Harness IncludedNo
Computer IncludedNo
QuantitySold as a kit.

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