BluePrint Engines GM LS Compatible 427 c.i. Pro Series Engine - Naturally Aspirated - Long Block (PART #BPE-BPMS427LS)

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.

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.

Blocks:

  • 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

Cylinder Heads:

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

Rotating Assembly:

  • Forged 6.125" Connecting Rods
  • Internally Balanced Front and Rear

Stall Converter:

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

Included items:

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

SPECIFICATIONS

Horsepower & Torque638 Horsepower / 540 ft. lbs. Torque
Cylinder HeadsBluePrint Engines LS3 Aluminum Cylinder Heads
Compression Ratio11:1
CamshaftHydraulic Roller Cam - .646 Intake / .646 Exhaust Lift and 254 Intake / 266 Exhaust Duration @.050-113° LSA - Three Bolt Cam
PistonsMahle 4032 Custom Forged
CrankshaftForged Crank - 4.125" Stroke and 6.125" Rods
Ignition TimingTiming (Initial/Total Advance): Ignition timing and spark advance are controlled by Powertrain Control Module
Firing Order1,8,7,2,6,5,4,3
Spark Plug (Not Included)CCH9405 (Not Included) Customer req to adjust heat range/gap per their fuel type and aspiration.
Flexplate/Flywheel (Not Included)Non-Weighted
Fuel RecommendationRequires Race Fuel of 100+ Octane
Recommended Service OilBPP10W30
Recommended Oil FilterBPPB160
Total Oil Capacity with Production Oil Pan, and Correct Filter6 Quarts

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