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BluePrint Engines

BluePrint Engines Pro Series Crate Engine GM LS 427 C.I. 638HP Naturally Aspirated Long Block BPMS427LS

Part Number:
BPMS427LS
MPN:
BPMS427LS
Availability:
Ships from Manufacturer
Shipping:
Free over $98 in U.S. 48
Type:
Crate Engines
Block:
High Strength Cast Iron (LSX Style) Block
Cylinder Heads:
Aluminum
Crankshaft:
Forged Steel Crankshaft
Crankshaft Reluctor:
58x
Crankshaft Stroke (in.):
4.125
Rod Length (in.):
6.125
Piston Bore (in.):
4.0695
Piston Material:
Forged
Compression Ratio:
11:1
Camshaft Included:
Yes
Electronics Included:
No
Quantity:
Sold Individually
  • BluePrint Engines Pro Series Crate Engine GM LS 427 C.I. 638HP Naturally Aspirated Long Block BPMS427LS
  • BluePrint Engines Pro Series Crate Engine GM LS 427 C.I. 638HP Naturally Aspirated Long Block BPMS427LS
  • BluePrint Engines Pro Series Crate Engine GM LS 427 C.I. 638HP Naturally Aspirated Long Block BPMS427LS
  • BluePrint Engines Pro Series Crate Engine GM LS 427 C.I. 638HP Naturally Aspirated Long Block BPMS427LS
$11,399.00

Description

BluePrint Engines Pro Series Crate Engine GM LS 427 C.I. 638HP Naturally Aspirated Long Block 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.
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 638 horsepower and 540 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: 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

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
  • .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
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Warranty Information

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.
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