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BluePrint BPMS427LS GM LS 427 Pro Series 638HP Long Block

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#227BPMS427LS

BluePrint BPMS427LS GM LS 427 Pro Series 638HP Long Block

The BluePrint Motorsports Pro Series GM LS compatible 427 cubic-inch engine produces an impressive 638 horsepower and 540 ft-lbs of torque, making it one of the most powerful naturally aspirated LS engines available.

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Product Summary

Long Block Crate Engine Type, 11.0:1 Compression Ratio

The BluePrint Motorsports Pro Series GM LS compatible 427 cubic-inch engine produces an impressive 638 horsepower and 540 ft-lbs of torque, making it one of the most powerful naturally aspirated LS engines available.
Built with a fully forged rotating assembly, Mahle 4032 custom forged pistons, and an 11:1 compression ratio, this engine is engineered for maximum performance in both race and aggressive street applications.
Topped with BluePrint LS3 Aluminum Heads and a high-lift hydraulic roller cam with .646-inch lift, this long block comes complete 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	11.0:1
Engine Displacement	427 cu. in.
Camshaft Type	Hydraulic Roller
Cylinder Head Material	Aluminum

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Need To Know

Made to Order

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BluePrint Engines BPMS427LS 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: 638 Horsepower / 540 ft. lbs. Torque
Compression Ratio: 11:1
BluePrint Engines LS3 Aluminum Heads
BluePrint Engines Hydraulic Roller Cam
BluePrint Engines Forged Crankshaft
Mahle 4032 Custom Forged Pistons

Description

Horsepower & Torque: 638 Horsepower / 540 ft. lbs. Torque
Compression Ratio: 11:1
BluePrint Engines LS3 Aluminum Heads
BluePrint Engines Hydraulic Roller Cam
BluePrint Engines Forged Crankshaft
Mahle 4032 Custom Forged Pistons

Rotating Assembly

Forged Crankshaft
4.125" Stroke
Forged 6.125" Connecting Rods
Mahle Custom 4032 Forged Pistons
Internally Balanced Front and Rear

Cylinder Heads

BluePrint Aluminum Cylinder Heads -PS8015
70cc Chamber
2.165" Intake / 1.600" Exhaust Valves
259cc Intake / 102cc Exhaust Runners

Cam Specs

Hydraulic Roller
.646 intake / .646 Exhaust Lift
254 Intake / 266 Exhaust Duration
@.050-113 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: 638 Horsepower / 540 ft. lbs. Torque
Cylinder Heads: BluePrint Engines LS3 Aluminum Cylinder Heads
Compression Ratio: 11:1
Camshaft: Hydraulic Roller Cam - .646 Intake / .646 Exhaust Lift and 254 Intake / 266 Exhaust Duration @.050-113° LSA - Three Bolt Cam
Pistons: Mahle 4032 Custom Forged
Crankshaft: Forged Crank - 4.125" Stroke and 6.125" Rods
UPC: 00887753990976

Guides & Documents

Crate Engines Technical Information (227BPMS427LS)

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 WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

BluePrint Engines BPMS427LS Specifications

KEY SPECS
MFG. Part #	BPMS427LS
Brand	BluePrint Engines
Crate Engine Type	Long Block
Compression Ratio	11.0:1
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	No
Wiring Harness Included	No
Reluctor Wheel	58x

GENERAL
Torque	540 ft./lbs.
Horsepower	638 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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Fitment

2004 Buick Rainier

GM LM4

2004-2005 Cadillac CTS

GM LS6

2006-2007 Cadillac CTS

GM LS2

2009-2014 Cadillac CTS

GM LSA

2002-2011 Cadillac Escalade

GM LM7
GM LQ9

2012 Cadillac Escalade

6.2 Chevy LS V8

2013 Cadillac Escalade

GM L9H

2014 Cadillac Escalade

GM L94

2003-2006 Cadillac Escalade ESV

GM LM7
GM LQ9

2007-2012 Cadillac Escalade ESV

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GM L9H

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GM L94

2002-2006 Cadillac Escalade EXT

GM LM7
GM LQ9

2007-2012 Cadillac Escalade EXT

6.2 Chevy LS V8

2013 Cadillac Escalade EXT

GM L9H

2007-2011 Chevy Avalanche

GM L76
GM LC9
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GM LY5

2012-2013 Chevy Avalanche

GM LY5

2002-2006 Chevy Avalanche 1500

GM LM7

2000-2002 Chevy C1500

4.8 Chevy LS V8
GM LM7
GM LQ4

1998-2002 Chevy Camaro

GM LS1

2010-2014 Chevy Camaro

GM LS3

1997-2000 Chevy Corvette

GM LS1

2001-2004 Chevy Corvette

GM LS1
GM LS6

2005-2007 Chevy Corvette

GM LS2

2008-2013 Chevy Corvette

GM LS3

2006-2009 Chevy Impala

GM LS4

2006-2007 Chevy Monte Carlo

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1999 Chevy Silverado 1500

4.8 Chevy LS V8
GM LM7

2000-2011 Chevy Silverado 1500

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GM L20
GM LM7
GM LY2

2012-2014 Chevy Silverado 1500

4.8 Chevy LS V8
GM LM7

2007 Chevy Silverado 1500 Classic

GM LQ4

2001-2003 Chevy Silverado 1500 HD

GM LQ4

2005-2006 Chevy Silverado 1500 HD

GM LQ4

2007 Chevy Silverado 1500 HD

GM LQ9

2007 Chevy Silverado 1500 HD Classic

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2019 Chevy Silverado 1500 LD

GM L98

2000-2004 Chevy Silverado 2500

GM LM7
GM LQ4

2005 Chevy Silverado 2500

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2006-2014 Chevy Silverado 2500

GM L98

2001-2011 Chevy Silverado 2500 HD

GM LQ4

2012-2014 Chevy Silverado 2500 HD

GM L98

2007 Chevy Silverado 2500 HD Classic

GM LQ4

2001-2006 Chevy Silverado 3500

GM LQ4

2007-2013 Chevy Silverado 3500

GM L98

2015-2018 Chevy Silverado 3500

GM L98

2007 Chevy Silverado 3500 Classic

GM LQ4

2007-2011 Chevy Silverado 3500 HD

GM LQ4

2012 Chevy Silverado 3500 HD

GM L98

2013 Chevy Silverado 3500 HD

GM LZ1

2014-2017 Chevy SS

GM LS3

2003-2004 Chevy SSR

GM LM4

2005-2006 Chevy SSR

GM L77

2014 Chevy Suburban

GM LMG
GM LY5

2000-2001 Chevy Suburban 1500

GM LM7

2002-2006 Chevy Suburban 1500

GM L59
GM LM7

2007-2009 Chevy Suburban 1500

GM LC9
GM LMG
GM LY5

2010-2011 Chevy Suburban 1500

GM LC9
GM LMG

2012-2014 Chevy Suburban 1500

GM LMG
GM LY5

2000-2006 Chevy Suburban 2500

GM LQ4

2007-2011 Chevy Suburban 2500

GM L96

2012-2013 Chevy Suburban 2500

GM LMG
GM LY5

2000-2006 Chevy Tahoe

4.8 Chevy LS V8
GM L59
GM LM7

2007 Chevy Tahoe

4.8 Chevy LS V8
GM LMG
GM LY5

2008 Chevy Tahoe

6.2 Chevy LS V8
GM L9H
GM LC9
GM LMG
GM LZ1

2009 Chevy Tahoe

GM L9H
GM LC9
GM LMG
GM LZ1

2010-2011 Chevy Tahoe

GM LC9
GM LMG
GM LZ1

2012-2014 Chevy Tahoe

GM LMG
GM LY5

2002-2005 Chevy Trailblazer

GM LH6

2006-2009 Chevy Trailblazer

GM LS2

2002-2009 GMC Envoy

GM LM4

2002-2006 GMC Envoy XL

GM LM4

2004-2005 GMC Envoy XUV

GM LM4

2001-2005 GMC Savana 1500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006 GMC Savana 1500

4.8 Chevy LS V8
GM L33
GM L94
GM LM7
GM LQ4

2007-2014 GMC Savana 1500

4.8 Chevy LS V8
GM L33
GM L94
GM LQ4

2001-2005 GMC Savana 2500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006-2013 GMC Savana 2500

4.8 Chevy LS V8
GM L33
GM L94
GM LQ4

2002-2005 GMC Savana 3500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006-2013 GMC Savana 3500

4.8 Chevy LS V8
GM L33
GM L94
GM LQ4

1999-2011 GMC Sierra 1500

GM L20
GM L9H
GM LC9
GM LMG
GM LZ1

2007 GMC Sierra 1500 Classic

GM L33
GM L59
GM LM7

2001-2003 GMC Sierra 1500 HD

GM LQ4

2005-2006 GMC Sierra 1500 HD

GM LQ4

2007 GMC Sierra 1500 HD Classic

GM LQ4

1999-2001 GMC Sierra 2500

GM LM7
GM LQ4

2002-2004 GMC Sierra 2500

GM LQ4

2001-2011 GMC Sierra 2500 HD

GM LQ4

2015-2019 GMC Sierra 2500 HD

GM L96

2007 GMC Sierra 2500 HD Classic

GM LQ4

2001-2006 GMC Sierra 3500

GM LQ4

2007 GMC Sierra 3500

GM L96

2007 GMC Sierra 3500 Classic

GM LQ4

2007-2011 GMC Sierra 3500 HD

GM L96

2015-2019 GMC Sierra 3500 HD

GM L96

2001 GMC Sierra C3

GM LQ4

2000-2007 GMC Yukon

4.8 Chevy LS V8
GM L20
GM LM7
GM LY2

2008-2011 GMC Yukon

4.8 Chevy LS V8
GM L20
GM L94
GM LM7
GM LY2
GM LZ1

2012-2013 GMC Yukon

GM L94
GM LC9
GM LMG
GM LZ1

2000 GMC Yukon XL 1500

GM LM7

2001-2011 GMC Yukon XL 1500

GM L59
GM LM7
GM LQ4

2012-2014 GMC Yukon XL 1500

GM L96

2000-2011 GMC Yukon XL 2500

GM LQ4

2012-2013 GMC Yukon XL 2500

GM L96

2003-2007 Hummer H2

GM LQ4

2008-2009 Hummer H2

6.2 Chevy LS V8

2008-2009 Hummer H3

GM LH8

2010 Hummer H3

GM LH9

2009 Hummer H3T

GM LH8

2010 Hummer H3T

GM LH9

1998-2002 Pontiac Firebird

GM LS1

2009 Pontiac G8

GM LS3

2004 Pontiac GTO

GM LS1

2005-2006 Pontiac GTO

GM LS2