Blueprint Engines
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BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Naturally Aspirated Long Block Crate Engines BPMS427LS Engine, C.I.D., Aspirated, 4032 Forged Pistons, Forged Crankshaft, Aluminum Heads, 11:1 Compression, Each
BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Naturally Aspirated Long Block Crate Engines BPMS427LS Engine, C.I.D., Aspirated, 4032 Forged Pistons, Forged Crankshaft, Aluminum Heads, 11:1 Compression, Each
A$29,977.21
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 21:18:13
Features
Note for Pistons, Rings, Rotors, Rods and engine internals
Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.
(keyword: pistons)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 | mllBPMS427LS |
| SFX Item ID | 5183298 |
| Accounting SKU | mll-BPMS427LS |
| Manufacturer SKU | BPMS427LS |
| Manufacturer UPC | 00887753990976 |
| Alternative References | BPMS427LS, MLL-BPMS427LS |
Crate Engine, Pro Series Chevy LS 427 C.I.D., Naturally Aspirated, 4032 Forged Pistons, Forged Crankshaft, Aluminum Heads, 11:1 Compression, Each
The LS-compatible platform is the king of street machines—and these BluePrint Engines 427 c.i.d. naturally aspirated Pro Series monsters prove why. They will unleash raw, LS-powered fury with street-scorching horsepower and torque. Each one features BluePrint aluminum heads, a hydraulic roller cam, hypereutectic pistons, and a forged crankshaft, all locked into a high-strength LSX-style cast iron block.
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
• 4.0395 in. bore
Rotating assembly:
• Forged crankshaft
• 4.125 in. stroke
• Forged 6.125 in. connecting rods
• Mahle custom 4032 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.
| Product Attributes | |
|---|---|
| Brand | BluePrint Motorsports |
| Manufacturer's Part Number | BPMS427LS |
| Part Type | Crate Engines |
| Product Line | BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Naturally Aspirated Long Block Crate Engines |
| UPC | 00887753990976 |
| Crate Engine Family | Chevy LS |
| Actual Engine Displacement | 7.0L/427 |
| Crate Engine Cylinder Head Material | Aluminum |
| Engine Block Material | Cast iron |
| Advertised Compression Ratio | 11.0:1 |
| Assembled | Yes |
| Engine Balance | Internal |
| Cam Style | Hydraulic roller, OE roller |
| Rear Main Seal Style | 1-piece |
| Intake Manifold Included | No |
| Cylinder Heads Included | Yes |
| Carburetor Included | No |
| Throttle Body Included | No |
| Distributor Included | No |
| Oil Pan Included | Yes |
| Valve Covers Included | Yes |
| Timing Cover Included | Yes |
| Water Pump Included | No |
| Harmonic Balancer Included | Yes |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | No |
| Spark Plug Wires Included | No |
| Computer Included | No |
| Wiring Harness Included | No |
| Supercharger Included | No |
| Remanufactured | No |
| Quantity | Sold individually. |
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