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Chevrolet Performance ZZ502/502 Partial Engine

Chevrolet Performance 12568782


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Chevrolet Performance ZZ502/502 Partial Engine $5,178.92
ZZ502/502 Partial Engine

Chevrolet Performance 12568782 Details

  • Clutch linkage bosses are now drilled and tapped.
  • The 502 engines now have a mechanical fuel pump boss!
  • Comes with an externally balanced 14'' automatic transmission flexplate. Use flywheel P/N 809-14096987 and 11" clutch assembly for manual transmission applications
  • Designed for pre-1976 street vehicles or any off-road vehicle
  • Not intended for marine applications
  • For long blocks and partial engines with steel camshafts, a distributor with a melonized steel gear must be used or engine damage will occur. Distributor #809-93440806 is recommended.

  • Specifications:

    Flywheel Included
    Engine Balance
    Connecting Rod Beam Style
    Connecting Rod Material
    Forged 4130 steel
    Crankshaft Material
    Forged 4340 steel
    Deck Height (in.)
    Engine Block Material
    Cast iron
    Flexplate Included
    Harmonic Balancer Included
    Main Bolt Style
    Main Journal Type
    454 mains
    Oil Pan Included
    Piston Material
    Forged aluminum
    Sold individually
    Short Block Piston Style
    Flat top
    Timing Cover Included
    Rear Main Seal Style
    Manufacturer's Part Number:

    The DIY Foundation for Big Torque!

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    The Chevrolet Performance ZZ502 Partial engine is designed for those who need the max, the 502ci Gen VI Chevrolet big-block with roller camshaft. The pistons, rods and crankshaft are the same as Gen V. This engine features a standard deck height block with four-bolt main bearing caps, a 4.00" stroke forged steel crankshaft and 4.47" diameter forged pistons. The compression ratio is a reasonable 8.75:1 when used with 118cc chambers cast iron heads, or 9.6:1 with 110cc chamber aluminum heads. It has 4340 steel connection rods with 7/16 rod bolts. This partial includes block, crankshaft, pistons, flex plate, damper, oil pump, oil pan, front cover and steel hydraulic roller camshaft with lifters!

  • Engine Type: Chevy Big-Block V-8
  • Displacement: 502ci
  • Bore x Stroke: 4.470'' x 4.000''
  • Block: Cast-iron with four-bolt main caps
  • Crankshaft: Forged steel
  • Connecting Rods: Forged steel, shot peened
  • Pistons: Forged aluminum
  • Camshaft Type: Hydraulic roller
  • Camshaft Lift: .527'' intake / .544'' exhaust
  • Camshaft Duration (@.050 in.): 224° intake / 234° exhaust
  • Compression Ratio: 9.6:1 with 110cc combustion chamber cylinder heads
  • Flexplate: 14'' diameter, externally balanced
  • Maximum Recommended RPM: 5500
  • Balanced: External
  • GM Warranty

    Does this assembly have a steel camshaft?

    Asked by: Mushrat
    Yes, this engine has a steel camshaft.
    Answered by: Rusty B
    Date published: 2018-06-15

    Will Edelbrock 454-O aluminum heads work on this engine?

    Asked by: Mushrat
    Yes, you should be able to install those Edelbrock heads on this short block.
    Answered by: Rusty B
    Date published: 2018-06-14

    I'm installing a 6-71 weind blower big block kit with this engine, do I need manifold , other than the one that comes with the blower itself, if so what kind??

    Asked by: Locc
    You will need to match this with the correct cylinder heads and then match those to the proper blower intake.
    Answered by: Rusty B
    Date published: 2017-12-11

    What's the LSA in this cam that comes with this partial engine?

    Asked by: Locc
    THese are the cam specs for this short block; Camshaft Type: Hydraulic roller Camshaft Lift: .527'' intake / .544'' exhaust Camshaft Duration (@.050 in.): 224° intake / 234° exhaust
    Answered by: Rusty B
    Date published: 2018-04-22
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    Items You Need
    Intended for pre-1978 street vehicles and all off-road vehicles. Not intended for marine use.
    Some parts are not legal for use in California or other states with similar laws / regulations