Compression Ratio: 11.1 with 70cc heads and Factory LS3 Head Gaskets - Pistons are 8cc Dish

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



DETAILED INFORMATION

Description:

  • New 427ci LS3 Shortblock Plus

Block:

  • New 6.2L Block

Rotating Assembly:

  • Forged Crank
  • 4.125" stroke and Forged 6.125" rods

Cam Specs:

  • Roller Cam
  • .624 Intake / .624 Exhaust
  • 239 Intake / 255 Exhaust Duration @ .050 - 114 Degree Lobe Separation - 110 ICL - three bolt cam

Also Includes:

  • Oil Pan
  • Timing Cover
  • Harmonic Balancer

Notes:

  • Not for EGR.
  • 58x reluctor ring


Engine Accessory Specifications

BluePrint Engines recommends 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: PSLS4270SP

Fuel Delivery Type: N/A

Spark Plug: Cyl head dependent

Harmonic Balancer: Non-Weighted

Flexplate/Flywheel: Non-Weighted

Stall Converter: Cyl head dependent

Intake Manifold: N/A

Fuel Recommendation: N/A

Timing (Initial/Total Advance): N/A

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

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