19433375 Chevrolet Performance 454 Partial Engine


  • 400 +hp / 500 + lb.-ft. capable
  • 454 HO and ZZ454 based on this partial
  • Four-bolt main block
  • All-forged rotating assembly
  • Camshaft and timing chain set does not come with engine

Shipping is free, but there is a delivery fee for residential addresses.

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454 HO (7.4L) Partial Engine

P/N 19433375

Displacement: 454 CID
Bore x Stroke: 4.250” x 4.000”
Compression Ratio: 9.6:1 (with 110cc Heads)
Block: Cast Iron, 1 piece rear seal, 4-bolt main caps.
Crankshaft: Forged Steel
Connecting Rods: Forged Steel
Pistons: Forged Aluminum
Balance: External
Maximum GM Recommended RPM: 5500
Ignition Timing: Base 4 degrees BTDC, 26 degrees total

Engine Includes:
• Fully GM assembled long block
• Oil pump, pick-up and oil pan
• 14” Auto Trans Flexplate
• 8” Harmonic Balancer
• Front timing cover
• Oil Filter and Adapter
• Passenger Side RH Oil Dipstick and Tube

Recommended Transmission: SuperMatic™ 4L85-E Four-Speed Automatic P/N 19300175 or T56 Super Magnum 6-Speed Manual P/N 19329795

Weight 361 lbs



Click here to download installation information.

Chevrolet Performance Partial Engines include a 12-month, unlimited-mileage, part-only warranty.

Click here for more detailed warranty information.


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Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to