454 HO Partial Engine(short block) Used as the basis for GM's 454/425hp and 454/440hp Crate engines.
Specifications: Engine Includes: Warranty:
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
Maximum GM Recommended RPM: 5500
Ignition Timing: Base 4 degrees BTDC, 26 degrees total
• 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
General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details.