zz502/502 base

ZZ502/502 BASE

Foundation for Big-Block torque

For the builder who wants the super-strong bottom end and high-flow aluminum oval-port cylinder heads, but also wants to finish the engine his or her way.

PART NO. 19331576

WhyBuy

508 HP @5200 RPM

WhyBuy

580 LB/FT @3600 RPM

High-performance base 

A set of high-flow aluminum oval-port cylinder heads and a hydraulic roller camshaft designed to support low-rpm torque production enable it to hit the 500 lb.-ft. mark by approximately 2,500 rpm.

Installation Guides

Find everything from vital data about your engine’s capabilities to how to install it into your build.

ZZ502-502 Base Tech Specs

  • Part Number: 19331576
  • 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 12366543): Hydraulic roller
  • Camshaft Lift (in.): .527 intake / .544 exhaust
  • Camshaft Duration (@.050 in.): 224° intake / 234° exhaust
  • Cylinder Heads (P/N 12363390): Aluminum oval port; 110-cc chambers
  • Valve Size (in.): 2.250 intake / 1.880 exhaust; stainless steel
  • Compression Ratio: 9.6:1
  • Rocker Arms (P/N 12368082): Stamped steel
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: Premium pump
  • Ignition Timing: 32° total @ 4,000
  • Maximum Recommended rpm: 5800
  • Balanced: External

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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.