GM Performance Parts ''ZZ 502'' Crate Engine
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The Rat With 502 Horsepower and 567 Ft.Lbs of Torque!

The king of all big block crate engines is the ZZ 502/502, with torque and horsepower that will have you grinning and your competition wondering what hit them. This is as close as you will come to a custom built 502 at crate engine prices. Additionally, this engine is full of heavy duty parts, to ensure that it will be making awesome power for a long, long time. With its forged aluminum pistons, forged shot peened steel connecting rods w/ 7/16'' bolts, forged steel crankshaft, four bolt main block, stainless steel valves, 6 quart oil pan, windage tray, roller camshaft and big valve aluminum heads the ZZ 502/502 seems more like a custom race engine than a crate engine.


  • 502 HP @ 5200 RPM, 567 FT.LBS. of Torque @ 4200 RPM (Max. Recommended RPM: 5800)
  • 9.6:1 Compression Ratio
  • Cast Iron 4-Bolt Main Block
  • 1053 Forged Steel Crankshaft
  • Forged Aluminum Pistons
  • 4340 Forged Steel Shot Peened Connecting Rods w/ 7/16'' Bolts
  • Aluminum Oval Port 110cc Chamber Cylinder Heads w/ 2.25'' Stainlss Steel Int./ 1.88'' Stainless Steel Exh. Valves
  • Hydraulic Roller Cam, Lift: .527'' Int./ .544'' Exh., Duration @ .050: 224 Int./ 234 Exh.
  • 1.7 Ratio Rocker Arms
  • Aluminum Dual Plane Intake Manifold
  • 850 CFM Holley Carburetor
  • HEI Distributor and Spark Plug Wires
  • 8'' High-RPM Torsional Damper
  • Aluminum Water Pump
  • Lightweight Gear Reduction Starter
  • 14'' Flexplate
  • Recommended spark plug- Accel 111-114 or any spark plug with 14mm, .750'' reach, 13/16'' hex, gasket seat, projected-tip
  • All Hardware and Gaskets are Included, (Finally, ''Some Assembly Required'' is a Good Thing.)


    GM ZZ 502/ 502 HP Pre-76 

      68.700 + Mva

    ZZ 502 - 502HP, Fully Assembled

      72.900 + Mva