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BluePrint Builder Series 632/815HP Blackout Reaper EFI Crate Engine and 4L80E Transmission Combos B632FKB4L8X Combo, Series, 632/815HP, Reaper, EFI, , Aluminum Heads, 10.3L/632, Chevy Big Block, Kit

SKU: MLLB632FKB4L8X

Engine and Transmission Combos

BluePrint Builder Series 632/815HP Blackout Reaper EFI Crate Engine and 4L80E Transmission Combos B632FKB4L8X Combo, Series, 632/815HP, Reaper, EFI, , Aluminum Heads, 10.3L/632, Chevy Big Block, Kit

SKU: MLLB632FKB4L8X

Engine and Transmission Combos
A$68,748.80
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 EFI crate engine and 4L80E transmission combos take the guesswork out of matching up an engine and transmission for your ride. Featuring a fuel injected Chevy big block-compatible 632 (c.i.d.) engine that produces 815 horsepower, this Reaper edition builder series includes a black pulley kit and 4L80E automatic transmission. The aluminum BluePrint Engines cylinder heads help produce a nice 11.0:1 compression ratio, with assistance from the hydraulic roller camshaft, forged pistons, and forged crankshaft. Altogether, this assembly produces 775 lbs.-ft. of torque. When you need or want a new powertrain for your GM ride, go with the authority in crate engines and their BluePrint Builder Series 632/815HP Blackout Reaper edition EFI crate engine and 4L80E transmission combos.

Other product features, items, and specifications include:

Block:
* New BluePrint cast iron
* Bore is 4.600 in.
* Main caps are 4-bolt
* One-piece rear main seal
* Mechanical fuel pump provision
* Tall deck (approximately 0.400 in. taller and wider than OEM block)

Rotating Assembly:
* New BluePrint forged crankshaft
* Stroke – 4.750 in.
* Forged H-beam 6.635 in. connecting rods
* Forged pistons
* Internal balance
* Non-weighted harmonic balancer

Aluminum Cylinder Heads:
* BluePrint PS8012 performance models (0.300 in. raised exhaust port vs. OEM)
* Chamber – 119cc
* Valves are 2.300 in. intake and 1.880 in. exhaust
* Exhaust runners are 358cc intake and 125cc exhaust
* Builder must verify clearance of exhaust, shift linkage, steering components, etc. before ordering

Camshaft:
* Hydraulic roller
* Intake valve lift – 0.698 in.
* Exhaust valve lift – 0.698 in.
* Intake duration at 0.050 in. of lift – 272
* Exhaust duration at 0.050 in. of lift - 282
* Lobe separation angle (LSA) – 110 degrees

Ignition Timing
* Initial is 10-16 degrees (16-20 degrees for Dominator-style carburetors)
* Total is 32-34 degrees (by 2,500 rpm for Dominator-style carburetors)
* Firing order is 1-8-4-3-6-5-7-2

Automatic Transmission Package:
* Complete 4L80E package with electronic controller (lockup capability)
* Torque converter with 3,800–4,200 rpm stall
* Non-weighted flexplate
* Starter
* Gear ratios are 2.482:1 (first), 1.482:1 (second), 1.000:1 (third), 0.750:1 (fourth), 2.077:1 (reverse)

Other Components:
* Single plane aluminum intake manifold with satin finish
* Complete EFI system (1,250 cfm) with Aeromotive A1000 fuel pump
* Valve covers, oil pan, and timing cover
* Billet front accessory drive with black finish (includes alternator, A/C, power steering, water pump, pulleys, and belts)
* BPP7938 NGK BKR5E spark plugs (0.750 in. reach, 14mm thread pitch, 5/8 in. hex, 0.035 in. gap)
* Thermostat and housing

Note: Recommended fuel is 91 octane. Recommended oil is BPP710. Not designed for EGR-compatibility.

Part Type

Engine and Transmission Combos

Data: v4.2 - Upd: 2026-09-27 14:39:24

Specifications

Product Attributes - Brand
BluePrint Engines
Product Attributes - Manufacturer's Part Number
B632FKB4L8X
Product Attributes - Part Type
Engine and Transmission Combos
Product Attributes - Product Line
BluePrint Builder Series 632/815HP Blackout Reaper EFI Crate Engine and 4L80E Transmission Combos
Product Attributes - UPC
887753972552
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
No
Product Attributes - Throttle Body Included
Yes
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
Yes
Product Attributes - Computer Included
Yes
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Black front accessory drive system includes water pump, alternator, power steering pump, A/C compressor and all belts and pulleys.
Product Attributes - Special Attention
This engine features 0.300 in. raised exhaust ports and 0.400 in. deck height increase over OEM.

Reference Information

Brand Name/s Blueprint Engines
StreetFX SKU mllB632FKB4L8X
SFX Item ID 5182840
Supplier Item Code 5182840
Manufacturer SKU B632FKB4L8X
Manufacturer UPC 887753972552
Alternative References 632/815HP, 4L80E, 10.3L/632

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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