454 HO Crate Engine | Big Block (2024)

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QUALITY PARTS.
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REBATE DETAILS

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QUALITY PARTS.
HIGH-CALIBER BUILD.

Rebate Details

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Connect & Cruise Powertrain System

CONNECT & CRUISE CRATE POWERTRAIN SYSTEM

CHEVROLET PERFORMANCE ENGINE (PART-ONLY)

CHEVROLET PERFORMANCE TRANSMISSION (PART-ONLY)

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^†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.

^†Parts and labor warranty when installed by a GM Dealer or qualified installing independent Service Center (ISC) or when sold over the counter and REPAIRED by a GM Dealer or qualifying ISC. Parts only when consumer repaired or installed in non-highway application. Coverage limited to defects in material and/or workmanship of the specific part only. Warranty valid when all required components are installed on the same vehicle and purchased on one invoice.

^††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 to 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 streets or highways. Visit www.chevroletperformance.com/emissions for more details. Rebate form and details available at chevrolet.com/performance/offers.

• 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