Description:

This engine is designed and manufactured to factory specs for the specified vehicles below. It's manufactured using tighter machining tolerances, higher quality components, and finer balancing of the rotating assembly to make this engine better than the original while still meeting the description of a replacement engine.

FITS Various 1989-1995 Chevy / GMC Vans Originally equipped with a 7.4L Engine. See application list below to confirm fitment.

View the Application List HERE

Block:

• BluePrint Engines High Strength Cast Iron Block, 454 BBC
  
• Manufactured and Machined in the USA!
• Mech Fuel Pump Provision: Yes
• 1-Piece Rear Main Seal
• Standard Deck
• 4.250" Bore
• 4-Bolt Main

Rotating Assembly:

• Cast Crankshaft
• 4.000" Stroke
  
• OEM Type 6.135" Connecting Rods w/ 150,000 PSI Bolts
• OEM Spec Pistons
• Externally Balanced Front and Rear

Cylinder Heads:

• Iron Heads -3/8 Accessory Bolt Holes on BOTH HEADS

Cam Specs:

• Cam Type: Flat Tappet
• OEM Spec Per Listed Vehicles

Ignition Timing:

• OEM Specifications

Also Includes:

• Timing Cover
• Valve Covers
  
• Oil Pan
  

Notes:

• Designed asfactory 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 systemetc. 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.
• This engine has 3/8 accessory mounting bolt holes on BOTH HEADS. if your engine has 7/16 bolt holesyou will need to source new mounting bolts/possibly sleeve down accessory bracket holes.
• Must confirm fitment with application list above.
• Features External 42.5 oz. imbalance. Recommend BluePrint Engines flywheel 14096987or BluePrint Engines flex plate 399973.