• See Fitment Tab for Vehicles That Meet Emission Standards

Blueprint Engines G4547090 GM, Chevy Replacement Engine:

• Block:
  • NEW BluePrint Cast Iron Block
  • 4-Bolt Main
  • 4.250 in. Bore
  • 1-Piece Rear Main Seal
  • Mechanical Fuel Pump Provision
  • Standard Deck
• Rotating Assembly:
  • New Steel Crankshaft
  • 4 in. Stroke
  • OEM Type 6.135 in. Connecting Rods w/150000 PSI Bolts
  • OEM Spec Pistons
  • External Front/Internal Rear Engine Balance
• Cylinder Heads:
  • Iron Heads
• Cam Specs:
  • Cam Type: Hydraulic Flat Tappet
  • OEM Spec Per Listed Vehicles
  • .409 Intake/.442 Exhaust Lift
  • 193 Intake/203 Exhaust Duration @ .050
• Ignition Timing:
  • OEM Specifications
• Also Includes:
  • Valve Covers
  • Oil Pan
  • Timing Cover
  • Harmonic Balancer

Blueprint Engines G4547090 GM, Chevy Replacement Engine Notes:

• Designed as factory replacement long block for specified vehicles and year ranges, using OEM specification parts. Customer to re-use existing intake manifold, ecu (if equipped), exhaust, fuel system etc. Modification or replacement of provided tinware, and minor accommodations such as dipstick location may be required
• Specifically designed as an OEM spec engine to meet emissions requirements of the specified vehicles, to meet the criteria of "replacement engine" in all 50 states
• If your vehicle was originally equipped with a 2-piece rear main seal crankshaft, a new flex plate or flywheel will be required. Note for those same early applications, this block features the dipstick on the Passenger side
• Features external 42.5 oz. imbalance
• See Vehicle Fitment Tab for fitment