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BluePrint BPMS4271LS GM LS 427 Power Adder Long Block Engine

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#227BPMS4271LS

BluePrint BPMS4271LS GM LS 427 Power Adder Long Block Engine

The BluePrint Motorsports Pro Series GM LS compatible 427 cubic-inch engine delivers 585 horsepower and 540 ft-lbs of torque, engineered for maximum performance in both extreme duty race and high-performance street applications.

$13,399.00

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Product Summary

Long Block Crate Engine Type, 9.5:1 Compression Ratio

The BluePrint Motorsports Pro Series GM LS compatible 427 cubic-inch engine delivers 585 horsepower and 540 ft-lbs of torque, engineered for maximum performance in both extreme duty race and high-performance street applications.
Built with a fully forged rotating assembly including a forged 8-counterweight crankshaft, forged H-beam connecting rods, and Mahle 2618 custom forged pistons, this engine is designed to handle serious abuse.
Topped with BluePrint LS3 Aluminum Heads and a high-lift hydraulic roller cam, this long block comes with an LS swap oil pan, harmonic balancer, valve covers, and timing cover.

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Key Specs

Crate Engine Type	Long Block
Compression Ratio	9.5:1
Engine Displacement	427 cu. in.
Camshaft Type	Hydraulic Roller
Cylinder Head Material	Aluminum

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Made to Order

This custom item will ship when completed

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BluePrint Engines BPMS4271LS Details

BluePrint Motorsports engines are built for maximum performance and are intended for extreme duty race applications. If this engine is used in a street application our normal 30 month, 50,000-mile warranty applies, if used in sanctioned racing no warranty, expressed, or implied.

Horsepower & Torque: 585 Horsepower / 540 ft. lbs. Torque
Compression Ratio: 9.5:1
BluePrint Engines LS3 Aluminum Heads
BluePrint Engines Hydraulic Roller Cam
BluePrint Engines Forged Crankshaft
Mahle 2618 Custom Forged Pistons

Description

Horsepower & Torque: 585 Horsepower / 540 ft. lbs. Torque
Compression Ratio: 9.5:1
BluePrint Engines LS3 Aluminum Heads
BluePrint Engines Hydraulic Roller Cam
BluePrint Engines Forged Crankshaft
Mahle 2618 Custom Forged Pistons

Rotating Assembly

Forged 8cwt Crankshaft
4.125" Stroke
Forged H-Beam 6.125" Connecting Rods
Mahle Custom 2618 Forged Pistons
Internally Balanced Front and Rear

Cylinder Heads

BluePrint Aluminum Cylinder Heads -PS8020
LSX Style 6 Bolt Studded Heads
70cc Chamber
2.165" Intake / 1.600" Exhaust Valves
259cc Intake / 102cc Exhaust Runners

Cam Specs

Hydraulic Roller
.641 intake / .641 Exhaust Lift
236 Intake / 256 Exhaust Duration
@.050-115.5 Degree Lobe Separation

Also Includes

This engine does NOT come with a Fuel Injection ECU and Wiring Harness
Harmonic Balancer
Valve Covers
LS Swap Oil Pan
Timing Cover

Specs

Horsepower & Torque: 585 Horsepower / 540 ft. lbs. Torque
Cylinder Heads: BluePrint Engines LSX Style 6 Bolt Studded Aluminum Cylinder Heads
Compression Ratio: 9.5:1
Camshaft: Hydraulic Roller Cam - Hydraulic Roller Cam - .641 Intake / .641 Exhaust Lift - 236 Intake / 256 Exhaust Duration @0.050" 115.5 LSA - Three Bolt Cam
Piston: Mahle 2618 Custom Forged
Crankshaft: 8 Counterweight Forged Crank - 4.125" Stroke and 6.125" Rods
UPC: 00887753990983

Guides & Documents

Crate Engines Technical Information (227BPMS4271LS)

CARB Warning

Follow EPA, CARB, and state regulations for engine changes

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine

CA Prop 65

CARB warning

BluePrint Engines BPMS4271LS Specifications

KEY SPECS
MFG. Part #	BPMS4271LS
Brand	BluePrint Engines
Crate Engine Type	Long Block
Compression Ratio	9.5:1
Engine Displacement	427 cu. in.
Camshaft Type	Hydraulic Roller
Cylinder Head Material	Aluminum
Piston Material	Forged Aluminum
Crankshaft Material	Forged Steel
Carburetor Included	No
Intake Manifold Included	No
Distributor Included	No
Connecting Rod Material	Forged Steel
Valve Covers Included	Yes
Engine Balance	Internal
Cylinder Heads Included	Yes
Rear Main Seal Style	1-piece
Throttle Body Included	No
Timing Cover Included	Yes
Oil Pan 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	Yes
Wiring Harness Included	No
Reluctor Wheel	58x

GENERAL
Torque	540 ft./lbs.
Horsepower	585 horsepower
Combustion Chamber Volume	70cc
Bore x Stroke (in)	4.069" x 4.125"
Warranty	30-Month / 50,000 Mile Warranty
Camshaft Included	Yes
Sold in Quantity	Each

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