BluePrint Motorsports GM LS Compatible 427 c.i. Pro Series Engine - Naturally Aspirated - Long Block - Available August / September
BluePrint Motorsports GM LS Compatible 427 c.i. Pro Series Engine - Naturally Aspirated - Long Block - Available August / September
BluePrint Motorsports GM LS Compatible 427 c.i. Pro Series Engine - Naturally Aspirated - Long Block - Available August / September

BluePrint Motorsports GM LS Compatible 427 c.i. Pro Series Engine - Naturally Aspirated - Long Block - Available August / September

SKU: BPMS427LS

BluePrint Motorsports GM LS Compatible 427 c.i. Pro Series Engine - Naturally Aspirated - Long Block - Available August / September

SKU: BPMS427LS

Horsepower & Torque: ??? Horsepower / ??? ft. lbs. Torque

Cylinder Heads: BluePrint Engines LS3 Aluminum Cylinder Heads

Compression Ratio: 11:1

Camshaft: Hydraulic Roller Cam - .624 Intake / .624 Exhaust Lift and 247 Intake / 263 Exhaust Duration @.050-114° LSA - Three Bolt Cam

Pistons: Mahle 4032 Custom Forged

Crankshaft: Forged Crank - 4.125" Stroke and 6.125" Rods

This engine Does NOT come with a Fuel Injection ECU and Wiring Harness.

Requires Race Fuel of 100+ Octane

Regular price $10,999.00
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Overview:

The LS-compatible platform is the king of street machines—and this BluePrint Engines 427 c.i. Pro Series monster proves why. Unleash raw, LS-powered fury with a street-scorching ??? horsepower and ??? ft-lbs of torque. This beast has BluePrint aluminum heads, a hydraulic roller cam, and hypereutectic pistons, and forged crankshaft, all locked into a high-strength LSX-style cast iron block. 

Description: 

  • Horsepower & Torque: Dyno Results Coming Soon..
  • Compression Ratio: 11:1
  • BluePrint Engines LS3 Aluminum Heads
  • BluePrint Engines Hydraulic Roller Cam
  • BluePrint Engines Forged Crankshaft
  • Mahle 4032 Custom Forged Pistons

Block:

  • BluePrint Engines High Strength Cast Iron (LSX Style) Block 
  • Increased Deck Thickness and Strength Webbing
  • Utilizes OEM LS3 Front and Rear Covers
  • Improved Water Jacket Design
  • Extended Cylinder Skirt
  • 1-piece Rear Main Seal
  • Priority Main Oiling
  • 4.0695" Bore
  • 6-bolt Main

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
  • .624 intake / .624 Exhaust Lift
  • 239 Intake / 255 Exhaust Duration
  • @.050-114 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

Notes:

  • 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.

Your BluePrint engine was dyno tested with the parts and specifications listed below.  If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet.

Part Number: BPMS427LS

Fuel Delivery Type:

Spark Plug: CCH9405

Spark Plug Gap: .045"

Harmonic Balancer: Non-Weighted

Flexplate/Flywheel: Non-Weighted

Stall Converter: Customer should match engine output and car setup to find best converter.

Intake Manifold: N/A

Fuel Recommendation: Requires Race Fuel of 100+ Octane

Timing (Initial/Total Advance): Ignition timing and spark advance are controlled by Powertrain Control Module

Firing Order: 1,8,7,2,6,5,4,3

Recommended Oil Filter: BPPB160

Recommended Break in Oil: BPP710

Recommended Oil: BPP10W30

Header Partners: 
Click here for our Header Partners and recommendations.

Click here to download a copy of the Installation Guide that came with your BluePrint engine.

BETTER THAN THE REST.

The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.

We give your BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations and is fully transferable.

For a detailed overview of our warranty, click here.

IT ALL COMES DOWN TO RESULTS.

We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.

BRAGGING RIGHTS INCLUDED!

A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!

This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!

RECOMMENDED PRODUCTS:
BluePrint Engines 10w30 Engine Oil - 1 Quart
$10.95
BluePrint Engines Crate Engine Break-In Oil — 1 Quart
$10.95
TrueBlue Performance Octane Boost
BluePrint Engines TrueBlue Performance Octane Booster
$29.95
BluePrint Engines TrueBlue UltraCool Antifreeze Coolant CONCENTRATE
$19.95
BluePrint Engines TrueBlue Power Steering Fluid
$8.95
BluePrint Engines TrueBlue Transmission Fluid UNIVERSAL ATF/MTF
$9.95
Gen IV LS and 2009+ Gen III Hemi Compatible Oil Filter
$12.95
EFI Fuel Pump and Plumbing Kit BPP5267 - For Fuel injected engines
$499.95
Holley EFI In-Tank Retrofit Fuel Pump - 450 LPH - Return Style
$755.95
EFI Billet Aluminum Fuel Pressure Bypass Regulator - 40-75 PSI and -10AN ORB - Black
$129.95
Liquid Filled Fuel Pressure Gauge - 0-100 PSI
$19.95
Muscle car swap LS and Hemi Universal Air Intake Kit
$127.99
GM LSX Compatible Starter – Delco Style - OEM Finish
$158.95
168-Tooth Steel Flex Plate - 1-Piece Rear Main Seal - OEM LS 1-Piece Balance - 4L60E/4L70E - GM LS Compatible
$162.95
168-Tooth Nodular Iron Flywheel - 6-Bolt Crank - 11" or 12" Clutch - GM LS Compatible
$309.95
GM LS Compatible Water Neck – 45°. For 2.25 DIA LS thermostats with 2.45 overall height
$36.95
BluePrint Parts – GM LS2 Compatible Water Neck – Straight. For 2.25 DIA LS thermostats with 2.45 overall height
$36.95
GM LS Compatible Front Accessory Drive - Full Serpentine with Alternator | AC | Power Steering | Water Pump | Brackets and Bolts
from $2,299.00
GM LS Compatible Front Accessory Drive - Full Serpentine with Alternator | Power Steering | Water Pump | Brackets and Bolts
from $2,149.00
GM LS Compatible Front Accessory Drive - Full Serpentine with Alternator | AC | Water Pump | Brackets and Bolts
from $2,149.00
GM LS COMPATIBLE INTAKE MANIFOLD, BPE LOGO, LS3 / L92, ALUMINUM BLACK
$449.95
BluePrint Engines 2009+ 87mm GM LS Compatible Drive By Wire Throttle Body. 12629992 equivalent.
$104.95
8.65mm Classic BluePrint Blue- Assembled Spark Plug Wire Set - 180° Boots - GM LS Compatible
$79.95