GM Performance Parts ''454 H.O.''
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''454 H.O.'' 425 HP - 500 ft/lbs. Of Torque!

The 454 H.O. big block crate engine is an awesome value, ready for an easy transplant into your classic muscle car or street rod! This Gen VI based block features rectangular port open chamber cast iron heads, big valve, forged pistons, forged steel crankshaft, forged connecting rods, four bolt mains and a conventional style mechanical fuel pump boss. Sounds a lot like the performance big blocks of the 60's. When you add features like a steel hydraulic roller camshaft, shotpeened rods, windage tray, one-piece rear main seal, high speed single roller timing chain and an 8.75:1 compression ratio that is completely satisfied sipping on todays premium fuel with absolutly no appetite for lead, octane boosters or other fuel additives, then you know this is the performance big block of today.

Key Features:

  • 425 HP @ 5250 RPM, 500 ft/lbs. @ 3250 RPM
  • 8.75:1 Compression Ratio
  • Cast-Iron Four Bolt Main Block
  • Forged Steel Crankshaft
  • Forged Steel Connecting Rods
  • Hydraulic Roller Cam Lift: .510'' Int./.540'' Exh.; Dur. @ .050'': 211 Int./230 Exh.
  • Cast Iron Rectangular Port Cylinder Heads w/118cc Combustion Chambers, 2.19'' Intake and 1.88'' Exhaust Valves
  • 1.7:1 Rocker Arms
  • 8'' Harmonic Balancer
  • 14'' Flexplate
  • Recommended spark plug- Accel 111-263 or any spark plug with 14mm, .460'' reach, 5/8'' hex, tapered seat, non-projected tip


    454 H.O. Engine

      49.600 + Mva