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Blueprint Engines

BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Power Adder Long Block Crate Engines BPMS4271LS Engine, C.I.D., Adder, 2618 Forged Pistons, Forged Crankshaft, Aluminum Heads, 11:1 Compression, Each

SKU: MLLBPMS4271LS

Crate Engines
BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Power Adder Long Block Crate Engines BPMS4271LS Engine, C.I.D., Adder, 2618 Forged Pistons, Forged Crankshaft, Aluminum Heads, 11:1 Compression, Each

Blueprint Engines

BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Power Adder Long Block Crate Engines BPMS4271LS Engine, C.I.D., Adder, 2618 Forged Pistons, Forged Crankshaft, Aluminum Heads, 11:1 Compression, Each

SKU: MLLBPMS4271LS

Crate Engines
A$31,411.38
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 Motorsports Pro Series Chevy LS 427 c.i.d. power adders are the ultimate long blocks, built for maximum boosted horsepower on the drag strip, drifting circuits, off-road trails, and autocross courses. Featuring BluePrint's high-strength LSX-style cast iron block, they will provide power and reliability.

Block:

* BluePrint Engines high-strength cast iron LSX-style block
* Compression ratio: 11:1
* Increased deck thickness and strength webbing
* Utilizes OEM LS3 front and rear covers
* Improved water jacket design
* Extended cylinder skirt
* One-piece rear main seal
* Priority main oiling
* 6-bolt main
* 4.0695 in. bore

Rotating assembly:

* Forged crankshaft
* 4.125 in. stroke
* Forged 6.125 in. connecting rods
* Mahle custom 2618 forged pistons
* Internally balanced front and rear

Cylinder heads:

* BluePrint aluminum cylinder heads
* 70cc chamber
* 2.165 in. intake/1.600 in. exhaust valves
* 259cc intake/102cc exhaust runners

Camshaft specs:

* Hydraulic roller
* .624 intake/.624 exhaust lift
* 239 intake/255 exhaust duration at .050 in.
* 114-degree LSA

Also includes:

* Harmonic balancer
* LS swap oil pan
* Timing cover
* Valve covers

Notes:

* Engine does not come with a fuel injection ECU and wiring harness.
* 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.
* Requires race fuel of 100+ octane.

Part Type

Crate Engines

Data: v4.2 - Upd: 2026-09-27 14:39:37

Specifications

Product Attributes - Brand
BluePrint Motorsports
Product Attributes - Manufacturer's Part Number
BPMS4271LS
Product Attributes - Part Type
Crate Engines
Product Attributes - Product Line
BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Power Adder Long Block Crate Engines
Product Attributes - UPC
00887753990983
Product Attributes - Crate Engine Family
Chevy LS
Product Attributes - Actual Engine Displacement
7.0L/427
Product Attributes - Crate Engine Cylinder Head Material
Aluminum
Product Attributes - Engine Block Material
Cast iron
Product Attributes - Advertised Compression Ratio
11.0:1
Product Attributes - Assembled
Yes
Product Attributes - Engine Balance
Internal
Product Attributes - Cam Style
Hydraulic roller, OE roller
Product Attributes - Rear Main Seal Style
1-piece
Product Attributes - Intake Manifold Included
No
Product Attributes - Cylinder Heads Included
Yes
Product Attributes - Carburetor Included
No
Product Attributes - Throttle Body Included
No
Product Attributes - Distributor Included
No
Product Attributes - Oil Pan Included
Yes
Product Attributes - Valve Covers Included
Yes
Product Attributes - Timing Cover Included
Yes
Product Attributes - Water Pump Included
No
Product Attributes - Harmonic Balancer Included
Yes
Product Attributes - Flexplate Included
No
Product Attributes - Flywheel Included
No
Product Attributes - Air Cleaner Included
No
Product Attributes - Spark Plugs Included
No
Product Attributes - Spark Plug Wires Included
No
Product Attributes - Computer Included
No
Product Attributes - Wiring Harness Included
No
Product Attributes - Supercharger Included
No
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Blueprint Engines
StreetFX SKU mllBPMS4271LS
SFX Item ID 5183296
Supplier Item Code 5183296
Manufacturer SKU BPMS4271LS
Manufacturer UPC 887753990983

Compatibility

Application Data
  • MakeCHEVROLET
    Engine TypeV8
    Engine Size4.8L/294
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Cylinder Head TypeLS3
    Fuel TypeGAS
    AspirationNaturally Aspirated
    Valves Per Engine16
  • MakeCHEVROLET
    Engine TypeV8
    Engine Size5.3L/325
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Cylinder Head TypeLS3
    Fuel TypeGAS
    AspirationNaturally Aspirated
    Valves Per Engine16
  • MakeCHEVROLET
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Cylinder Head TypeLS3
    Fuel TypeGAS
    AspirationNaturally Aspirated
    Valves Per Engine16
  • MakeCHEVROLET
    Engine TypeV8
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Cylinder Head TypeLS3
    Fuel TypeGAS
    AspirationNaturally Aspirated
    Valves Per Engine16
  • MakeCHEVROLET
    Engine TypeV8
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Cylinder Head TypeLS3
    Fuel TypeGAS
    AspirationNaturally Aspirated
    Valves Per Engine16
  • MakeCHEVROLET
    Engine TypeV8
    Engine Size7.0L/427
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Cylinder Head TypeLS3
    Fuel TypeGAS
    AspirationNaturally Aspirated
    Valves Per Engine16

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