QUALITY PARTS.
HIGH-CALIBER BUILD.
Offer Valid 1/1/24 to 12/31/24
$250
Big-Block performance
With 461 horsepower and 558 lb.-ft. of torque, our 502 HO crate engine has power on tap for every need — from a ’69 Chevelle to a newer Suburban.
PART NO. 12568778
461 HP @5100 RPM
558 LB/FT @3400 RPM
Performance possibilities
What will you do with 461 horsepower and 558 lb.-ft. of torque from the value-driven 502 HO crate engine? Whether you use it on the street, strip or even pulling a trailer, its performance range offers many possibilities.
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.
†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.
Installation Guides
Find everything from vital data about your engine’s capabilities to how to install it into your build.
502 HO Tech Specs
- Part Number: 12568778
- Engine Type: Chevy Big-Block V-8
- Displacement (cu. in.): 502
- Bore x Stroke (in.): 4.470 x 4.000
- Block (P/N 19170540): Cast-iron with four-bolt main caps
- Crankshaft (P/N 10183723): Forged steel
- Connecting Rods (P/N 19170198): Forged steel, shot peened
- Pistons (P/N 12533507): 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: Regular Pump
- Ignition Timing: 32° Total @ 4,000 rpm
- Maximum Recommended rpm: 5500
- Balanced: External
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