GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Base Dressed - No ECU / Harness
GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Base Dressed - No ECU / Harness
GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Base Dressed - No ECU / Harness
GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Base Dressed - No ECU / Harness
GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Base Dressed - No ECU / Harness

GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Base Dressed - No ECU / Harness

SKU: PSLS42730CTF

GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Base Dressed - No ECU / Harness

SKU: PSLS42730CTF

Horsepower & Torque: 605 Horsepower / 565 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 239 Intake / 255 Exhaust Duration @ .050 - 114° LSA - Three Bolt Cam

Pistons: Forged

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

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

Fuel Recommendation: 91+ Octane

Regular price $13,299.00
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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 605 horsepower and 565 ft-lbs of torque. This base dressed beast packs a 11:1 compression ratio, BluePrint aluminum heads, a hydraulic roller cam, and hypereutectic pistons, and nodular iron crankshaft, all locked into a high-strength LSX-style cast iron block. With the drive-by-wire throttle pedal, sensors, and throttle body included, it’s ready to rip—just plug in, fire it up, and hang on.

Description: 

  • Horsepower & Torque: 605 Horsepower / 565 ft. lbs. Torque
  • Compression Ratio: 11:1
  • BluePrint Engines LS3 Aluminum Heads
  • BluePrint Engines Hydraulic Roller Cam
  • BluePrint Engines Forged Pistons
  • BluePrint Engines Forged Crankshaft

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
  • 4.0685" Bore
  • 6-bolt Main

Rotating Assembly:

  • Forged Crankshaft
  • 4.125" Stroke
  • Forged 6.125" Connecting Rods
  • Forged Pistons
  • Internally Balanced Front and Rear

Cylinder Heads:

  • BluePrint Aluminum Cylinder Heads - PS8015
  • 69cc Chamber
  • 2.165" Intake / 1.590" 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
  • LS Swap Oil Pan - Windage Tray - Pick Up Screen
  • BluePrint Engines Fuel Injectors and Rail
  • DBW Throttle Body - BPP12191019
  • Water Pump - BPPLS126WP
  • GM Plastic Intake Manifold
  • Spark Plugs & Wires
  • Harmonic Balancer
  • Coil Packs
  • Sensors

Notes:

  • Does NOT include any engine management/controller.
  • This engine requires a non-weighted flex plate/flywheel.
  • Recommended Fuel: 91 Octane
  • BluePrint Engines recommends a 2200+ RPM stall converter.
  • Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars
  • Not for use in pollution-controlled vehicles or in dry sump applications.
  • BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained.

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: PSLS42730CTF

Fuel Delivery Type: Electronic Fuel Injected

Spark Plug: AC Delco 41-985

Spark Plug Gap: .040"

Harmonic Balancer: Non-Weighted

Flexplate/Flywheel: Non-Weighted

Stall Converter: 2200+

Intake Manifold: GM Plastic Intake

Fuel Recommendation: 91+ Octane Approved

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 Break In Oil: BPP710

Recommended Filter: BPPB160

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.

At BluePrint Engines, customer satisfaction is our highest priority. Every engine is built using high-quality components, with each rotating assembly balanced to within two grams of specification. Before shipment, every crate engine is dyno tested and certified to ensure it is ready to deliver the horsepower and torque you expect.

To stand behind that level of quality, BluePrint Engines offers industry-leading warranty coverage, providing confidence and peace of mind whether the engine is installed by an individual or a professional installer. Our standard warranty is fully transferable, adding long-term value and reassurance for our customers.

Warranty Coverage Details:

  • BluePrint Engines (including Builder Series)- Standard Warranty 30 months or 50,000 miles (parts and labor)*
  • BluePrint Engines Extended Warranty- 48 months or unlimited miles (parts and labor)*
  • Race / Motorsports Engines -No warranty
  • Marine Engines- 12 months (parts and labor)
  • Short Blocks-12 months (parts only)
  • Bare Blocks- 6-Month Unaltered
  • International Sales- Warranty coverage is handled by the in-country distributor

*Applies to eligible engine part numbers beginning with “B” or “P.” Warranty coverage is subject to terms and conditions. Proper installation and maintenance are required.

Please refer to full warranty documentation for complete details 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
$11.99
TrueBlue Performance Octane Boost
BluePrint Engines TrueBlue Performance Octane Booster
$34.99
BluePrint Engines TrueBlue UltraCool Antifreeze Coolant CONCENTRATE
$24.99
BluePrint Engines TrueBlue Power Steering Fluid
$9.99
BluePrint Engines TrueBlue Transmission Fluid UNIVERSAL ATF/MTF
$10.99
Gen IV LS and 2009+ Gen III Hemi Compatible Oil Filter
$16.99
EFI Fuel Pump and Plumbing Kit BPP5267 - For Fuel injected engines
$499.99
BluePrint Engines EFI In-Tank Retrofit Fuel Pump - 450 LPH - Return Style
$749.99
EFI Billet Aluminum Fuel Pressure Bypass Regulator - 40-75 PSI and -10AN ORB - Black
$159.99
Liquid Filled Fuel Pressure Gauge - 0-100 PSI
$19.99
Muscle car swap LS and Hemi Universal Air Intake Kit
$159.99
GM LSX Compatible Starter – Delco Style - OEM Finish
$189.99
168-Tooth Steel Flex Plate - 1-Piece Rear Main Seal - OEM LS 1-Piece Balance - 4L60E/4L70E - GM LS Compatible
$189.99
168-Tooth Nodular Iron Flywheel - 6-Bolt Crank - 11" or 12" Clutch - GM LS Compatible
$349.99
GM LS Compatible Front Accessory Drive - Full Serpentine with Alternator | AC | Power Steering | Water Pump | Brackets and Bolts
from $2,599.95
GM LS Compatible Front Accessory Drive - Full Serpentine with Alternator | Power Steering | Water Pump | Brackets and Bolts
from $2,399.95
GM LS Compatible Front Accessory Drive - Full Serpentine with Alternator | AC | Water Pump | Brackets and Bolts
from $2,399.95
8.65mm Classic BluePrint Blue- Assembled Spark Plug Wire Set - 180° Boots - GM LS Compatible
$79.99
Cable Kit, 36" Stainless Braided Throttle, Universal
$49.99
Cable Kit, 36" Stainless Braided Throttle, Universal, Black
$49.99
BPP12150039 - PSLS 427 / 376 / LS3 Iridium Spark Plugs, Set of 8
$69.99
GM LS3 Compatible Water Neck
$14.95