454 ho

454 HO

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 MSRP

PART NO. 12568774

WhyBuy

438 HP @5300 RPM

WhyBuy

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.  

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

Subscribe to the Chevy Performance enthusiast monthly newsletter.


Check out Chevrolet Performance product releases, future car builds, and more.

Connect


Connect with Chevy Performance.

Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.

  • The Manufacturer's Suggested Retail Price excludes tax, shipping and installation. Individual retailer pricing may vary. Please see your local dealer or retailer for details.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.

  • MyLink functionality varies by model. Full functionality requires compatible Bluetooth and smartphone, and USB connectivity for some devices.

  • Do not use summer-only tires in winter conditions, as it would adversely affect vehicle safety, performance and durability. Use only GM-approved tire and wheel combinations. Unapproved combinations may change the vehicle’s performance characteristics. For important tire and wheel information, go to my.chevrolet.com/learn/tires or see your dealer.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.