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GMP-4L806ZZ502-K - CPP ZZ502 502HP NON- Assembled Deluxe Crate Engine with 4L80 6 Speed Trans Package

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The king of all big block crate engines is the ZZ502/502, with torque and horsepower that will have you grinning and streetable manners that have your competition wondering what hit them.

The ZZ502/502 represents our latest and best efforts to develop awe inspiring big block power in a dependable, durable and drivable big block crate engine.

With its big valve aluminum heads,, roller camshaft and complete dyno tuned induction and ignition system, this is as close as you'll come to a custom built 502 at crate engine prices. And for those that like to grind on heads,, change cams,, mill for compression or whatever, we've left it only partially assembled. make no mistake, everything you need is there, but you don't need to disassemble anything to make head mods or an intake swap.

It really is the best of both worlds, bolt it together and go, or tweak it to meet your specific needs. The ZZ502/502 makes extensive use of aluminum to keep weight down. Including aluminum heads, intake, water pump, and valve covers. Additionally, this king of the crate engines is full of heavy duty parts to ensure that it will be making awesome horsepower for a long, long time. With its forged aluminum pistons, forged steel connecting rods with 7/16" bolts, forged steel crankshaft, 4-bolt main block, stainless steel valves, 6 quart oil pan, and windage tray, the ZZ502/502 seems more like a custom race engine.

The base kit includes a fully assembled short block with 2.25" intake aluminum heads, valvetrain, aluminum valve covers, harmonic balancer and 14" automatic trans flexplate. The complete engine kit adds an aluminum intake manifold, 870 cfm carb, complete ignition system, gear reduction starter and aluminum water pump. Both kits include hardware and gaskets for all parts included in the particular kit.

The ZZ502/502 is not intended for marine use, and should only be used in 1973 and earlier pre-emissions street vehicles or any year off road vehicles.

Technical Notes: Do not use bolt sealer on the cylinder head bolts, the holes are blind tapped. The complete engine kit includes the long block kit plus intake manifold, carburetor, distributor, water pump, spark plugs, spark plug wires with looms and additional fasteners and gaskets.

Power: 502 HP @ 5200 RPM, 502 ft. lbs. of torque @ 4200 RPM
Displacement: 502 CID
Bore x Stroke: 4.47” x 4.000”
Compression Ratio: 9.6:1
Recommended Fuel: 92 Octane
Block: Cast Iron, 1 piece rear seal, 4-bolt main caps
Crankshaft: Forged Steel
Connecting Rods: Forged Steel
Pistons: Forged Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .527” Intake / .544” exhaust
Cam Duration @ .050”: 224 deg. Intake / 234 deg. Exhaust
Lobe Separation: 112 Degree
Cylinder Heads: Cast Aluminum Oval Port
Combustion Chamber: 110cc
Valves: 2.250” Intake/ 1.880” Exhaust
Rocker Arms: Stamped Steel, 1.7:1 Ratio
Balance: External
Maximum GM Recommended RPM: 5800
Ignition Timing: Base 8 degrees BTDC, 30 degrees total

Engine Includes:
• Fully GM assembled long block
• Black Cast Aluminum Valve Covers
• Aluminum Intake Manifold
• GM Tuned 870CFM, Vacuum Secondaries with Electric Choke
• Oil pump, pick-up and oil pan
• HEI Distributor, Plug Wires, Looms and Spark Plugs
• 14” Auto Trans Flexplate
• HD Starter with Bolts
• 8” Harmonic Balancer
• Front timing cover
• Aluminum Long Water Pump
• Oil Filter and Adapter
• Passenger Side RH Oil Dipstick and Tube


General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details.

Performance Automatic 4L80e 6-Speed Transmission Packages

Performance Automatic 4L80E 6-Speed automatics are designed and built with the best parts available today. The 6 speed has a upgraded gear ratio spread for those vehicles that need the most out of their transmission. This is also switchable to a 4 speed with the touch of a button should you desire!. Also includes Performance Automatic's exclusive Quik Connect Program, a comprehensive program that contains easy to follow instructional video and personalized technical assistance. After you register your product, you will have access over the internet to informative installation and operational videos specific to your specific vehicle and driving habits. You will also have access to two (2) additional custom transmission programs.

4L80E 6-Speed Package Includes:

• Stage I 4L80E transmission rated for 650HP
• Raybestos Stage 1 HP Performance Clutches
• Raybestos Stage Pro Kick Down Band
• High Performance Internal Sprag
• New Pressure Control Manifold
• New Internal Wiring
• New Solenoids
• Reprogrammed Pump Assembly
• 300mm Input Shaft
• Billet Forward Clutch Hub
• New Steel Pan
• New Speed Sensors
• 10" Single Disc Torque Converter
• Transmission Controller & Wiring Harness
• Dipstick & Filler Tube
• Torque Convertor Inspection Cover
• Transmission Mount
• Bolt & Hardware Package
• 2 Year Limited Warranty

Upgraded performance gear ratio spread
2.98 1st gear
2.24 2nd gear
1.57 3rd gear
1.18 4th gear
1.00 5th gear
0.075 6th gear

Click on Documents Tab for Warranty Statement

Related Products:
Pace Professional Engine Dyno Break-In & Testing
Big Block Chevy Complete Engine & Transmission Combo Packages
GM 502 600+HP Fully Assembled Crate Engine
Serpentine Accessory Drive Systems

Application List


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  • 500.0 lbs.
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