ZZ502 Crate Engine – Chevrolet Performance ZZ502 Big Block Base Crate Engine


  • 508 hp @ 5,200 rpm/580 lb.-ft. @ 3.600 rpm
  • Cast-iron block with 4-bolt main caps
  • Aluminum oval port cylinder heads
  • Includes partial engine assembly, cylinder heads, valvetrain and valve covers

Available on backorder

Shipping is free, but there is a delivery fee for residential addresses.

SKU: 19433160 Categories: , Tag:

ZZ502 Base Engine

A DIY Foundation for Big Torque! Karl Kustoms offers this ZZ502/502 Base crate engine for the builder who wants to finish the engine his or her way. With the super-strong bottom end and high-flow aluminum oval-port cylinder heads it’s a great foundation to build your ideal big-block!

Like our complete ZZ502/502 Deluxe crate engine, the base engine includes high-flow aluminum oval-port cylinder heads and a hydraulic roller camshaft. It’s designed to support low-rpm torque production, hitting the 500 lb.-ft. mark by approximately 2,500 rpm and sustain that power to 5,000 rpm. For exceptional strength and durability it features Chevrolet Performance’s latest-generation block casting with four-bolt main caps and an all-forged rotating assembly.

We rate the ZZ502/502 Base engine at 508 horsepower and 580 lb.-ft. of torque when it is finished with Chevrolet Performance aluminum intake manifold P/N 12363406 and Holley 870-cfm carburetor P/N 19170094. We carry all of the other parts you need to complete this engine – just give us a call or contact us online!

What’s Included

  • Partial engine assembly
  • Cylinder heads
  • Valvetrain and valve covers
  • Externally balanced 14″ automatic transmission flexplate. Use flywheel P/N 14096987 and 11″ clutch assembly for manual transmission applications

Important Notes

  • Clutch linkage bosses are now drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads, for clearance
  • 502 engines now have a mechanical fuel pump boss! NOTE: There is a fuel pump lobe behind the boss.
  • Not intended for marine applications
  • Note: Distributor with melonized steel gear MUST be used with long-blocks and Partial engines with steel camshafts, or engine damage will occur.
  • Recommended Transmission: SuperMatic 4L85-E Four-Speed Automatic P/N 19300175
  • Replaces old GM P/N 12496963, 19331576 & 19419002
Weight 532 lbs


19331576, 19419002

ZZ502 Base Engine Tech Specs:

  • P/N: 19419002
  • Power: 508 hp @ 5,200 rpm / 580 lb.-ft. @ 3,600 rpm
  • Engine Type: Chevy Big-Block V-8
  • Displacement (cu in): 502
  • Bore x Stroke (in): 4.470 x 4.000
  • Block: Cast-iron with 4-bolt main caps (P/N 19170540)
  • Crankshaft: Forged steel (P/N 10183723)
  • Connecting Rods: Forged steel, shot peened (P/N 19170198)
  • Pistons: Forged aluminum (P/N 12533507)
  • Camshaft Type: Hydraulic roller (P/N 12366543)
  • Camshaft Lift (in): .527 intake / .544 exhaust
  • Camshaft Duration (@.050 in): 224° intake / 234° exhaust
  • Cylinder Heads: Aluminum oval port; 110cc chambers (P/N 19331425)
  • Valve Size (in): 2.250 intake / 1.880 exhaust; stainless steel
  • Compression Ratio: 9.6:1
  • Rocker Arms: Stamped steel (P/N 12675724)
  • Rocker Arm Ratio: 1.7:1
  • Flexplate: 14″ (P/N 10185034)
  • Recommended Fuel: Premium pump
  • Ignition Timing: 32° Total @ 4,000 rpm
  • Maximum Recommended rpm: 5,800
  • Weight: 532 lbs.
  • Balanced: External

Click here to download installation information.

Chevrolet Performance Crate Engines carry a 24 Month or 50,000 mile warranty (whichever comes first) when installed by a qualified independent service center. Chevrolet Performance Crate Engines also come with a 30 day start up warranty (parts only).

There are some additional limitations on the warranty – please see the official GM warranty documentation for more information.


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Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to