BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Naturally Aspirated Long Block Crate Engines BPMS427LS

Name: BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Naturally Aspirated Long Block Crate Engines
Brand: BluePrint Motorsports
SKU: MLL-BPMS427LS
Price: 13099.00 USD
Availability: OutOfStock
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Part Number: MLL-BPMS427LS

$13,099.00

BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Naturally Aspirated Long Block Crate Engines

Crate Engine, Pro Series Chevy LS 427 C.I.D., Naturally Aspirated, 4032 Forged Pistons, Forged Crankshaft, Aluminum Heads, 11:1 Compression, Each
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BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Naturally Aspirated Long Block Crate Engines BPMS427LS

MLL-BPMS427LS

Not Yet Reviewed

Part Number: MLL-BPMS427LS

Estimated Ship Date: Dec 29, 2026

$13,099.00

Overview

Applications

Q&A

Instructions & Calculators

Estimated Ship Date: Dec 29, 2026 Would you rather pick it up?

Overview

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

Summit Racing Part Number:

MLL-BPMS427LS

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:

Cylinder Heads Included:

Yes

Carburetor Included:

Throttle Body Included:

Distributor Included:

Oil Pan Included:

Yes

Valve Covers Included:

Yes

Timing Cover Included:

Yes

Water Pump Included:

Harmonic Balancer Included:

Yes

Flexplate Included:

Flywheel Included:

Air Cleaner Included:

Spark Plugs Included:

Spark Plug Wires Included:

Computer Included:

Wiring Harness Included:

Supercharger Included:

Remanufactured:

Quantity:

Sold individually.

BluePrint Motorsports Pro Series Chevy LS 427 C.I.D. Naturally Aspirated Long Block Crate Engines

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.