50 State Legal Replacement 1970-1990 - GM Big Block Compatible 454 c.i. Engine - Long Block

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.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: 1 Piece Rear Main Seal  Cast Crankshaft 4.000" Stroke  OEM Type 6.135" Connecting Rods w/ 150,000 PSI Bolts OEM Spec Pistons Externally Balanced Front - Internally Balanced Rear Cylinder Heads: Iron Heads  Cam Specs: Cam Type: Flat Tappet OEM Spec Per Listed Vehicles Ignition Timing: OEM Specifications Also Includes: Timing Cover Valve Covers Dipstick Notes: Designed as factory replacement long blo