Copo 427 - 425 Hp Crate Engine - GM (17802825)

Product Details

• Description:

  COPO 427 - 425 hp
  The COPO 427 uses the large-bore cylinder block and high-flow
  cylinder heads of the LS7 engine and complements them with
  a high-compression rotating assembly to deliver big power from
  its large displacement. Its lightweight aluminum block and
  heads revive the spirit of the original ZL1 all-aluminum 427
  Big-Block that helped forge the COPO legacy in 1969.
  TECH SPECS:
  Displacement: 427 cu in (7.0L)
  Compression Ratio: 13.5:1
  Cylinder Block: LS7 cast aluminum
  Bore x Stroke (in): 4.125 x 4.000
  Crankshaft: Forged steel
  Connecting Rods: Forged steel
  Pistons: Forged dome
  Cylinder Heads: LS7 aluminum
  Induction: Natural
  Intake Manifold: Holley Hi-Ram
  Camshaft Type: Hydraulic roller
  Camshaft Lift (int./exh.): .630/.630-inch
  Camshaft Duration (int./exh.): 233/276 deg. @ .050-inch

• Manufacturer:

  This item is a Special Order Part. Most special order parts will generally ship from our warehouse within 48-72 hours but may take up to 7-10 business days based upon their availability from General Motors before shipping from our facility in North Carolina. For parts availability questions please contact us at customerservice@gmpartsdirect.com.

  All Genuine GM parts are covered by GM's 12 month "parts warranty period" from the date of invoice. If this part is defective, you should be able to get the warranty claim processed by your local GM dealership's service department, or any GM dealership nationwide with a copy of your invoice. We will also be able to assist in any warranty claims.

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