QUALITY PARTS.
HIGH-CALIBER BUILD.
Offer Valid 1/1/24 to 12/31/24
$250
Big torque on a budget
Chevrolet Performance’s 454 HO crate engine is a Big-Block bargain – an affordable engine with performance specs that will make you think it’s 1970 all over again.
$19,157 MSRPâ€
PART NO. 12568774
438 HP @5300 RPM
500 LB/FT @3500 RPM
Updated Design
The 454 HO features an all-forged rotating assembly for great strength and durability. It also uses a smooth hydraulic roller camshaft for excellent drivability and a broad performance range.
Connect & Cruise Powertrain System
Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit installations in older vehicles.
†Must be purchased from a participating U.S. dealer or Chevrolet Performance Authorized Reseller. Mail-in rebate offer not available with other offers. See gmpartsrebates.com for details, applicable rebate amounts, and rebate form. Rebates must be submitted by 1/31/25. Rebates may be submitted over two invoices within 120 days of each other. Allow 6 to 8 weeks for delivery of debit card. Offer valid 1/1/24 - 12/31/24.
††Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public roads, streets, or highways. Visit www.chevroletperformance.com/emissions for more details.
Installation Guides
Find everything from vital data about your engine’s capabilities to how to install it into your build.
454 HO Tech Specs
- Part Number: 12568774
- Engine Type: Chevy Big-Block V-8
- Displacement (cu. in.): 454
- Bore x Stroke (in.): 4.250 x 4.000
- Block (P/N 19170538): Cast-iron with four-bolt main caps
- Crankshaft (P/N 14096983): Forged steel
- Connecting Rods (P/N 19170198): Forged steel
- Pistons (P/N 10215228): Forged aluminum
- Camshaft Type (P/N 24502611): Hydraulic roller
- Camshaft Lift (in.): .510 intake / .540 exhaust
- Camshaft Duration (@.050 in.): 211° intake / 230° exhaust
- Cylinder Heads (P/N 12562920): Iron rectangular port; 118-cc chambers
- Valve Size (in.): 2.190 intake / 1.880 exhaust
- Compression Ratio: 8.75:1
- Rocker Arms (P/N 12523976): Stamped steel
- Rocker Arm Ratio: 1.7:1
- Water Pump (P/N 19168606): Cast-iron, long-style
- Flexplate (P/N 10185034): 14"
- Recommended Fuel: Premium pump
- Ignition Timing: 36° Total @ 4,000 rpm
- Maximum Recommended rpm: 5500
- Balanced: External
Mobil 1 is now The Official Motor Oil of Chevrolet Performance.