Crate Engine - BBC ZZ502/508HP
Crate Engine - 502 Cubic Inch - 508 HP - Big Block Chevy
The ZZ502/502 is one of the industry’s benchmark crate engines, offering excellent value with a proven combination of performance that is suitable for the street or strip. With more than 500 horsepower and 580 lb.-ft. of torque, it demands your full attention and a chassis that is strong enough to harness its frame-straining twisting power.
Thanks to a combination of high-flow aluminum oval-port cylinder heads with 2.25/1.88-inch valves and a hydraulic roller camshaft designed to support low-rpm torque production, this torque monster tops the 500 lb.-ft. mark by approximately 2,500 rpm and doesn’t dip below it until about 5,000 rpm. It also features a latest-generation block casting with four-bolt main caps and an all-forged rotating assembly for exceptional strength and durability.
Our Deluxe package comes complete from the oil pan to the carburetor, including an HEI distributor, plug wires, starter, water pump, balancer and an aluminum intake topped with a Holley 870-cfm four-barrel carburetor.
TECH SPECS
Part Number: 19331579
Displacement (cu in): 502
Bore x Stroke (in): 4.470 x 4.000
Block (P/N 19170540): Cast-iron with 4-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 19418910): Aluminum oval port; 110cc chambers
Valve Size (in): 2.250 intake / 1.880 exhaust; stainless steel
Compression Ratio: 9.6:1
Rocker Arms (P/N 12675724): Stamped steel
Rocker Arm Ratio: 1.7:1
Distributor (P/N 93440806): HEI type
Carburetor (P/N 19170094): 870-cfm
Water Pump (P/N 19168602): Aluminum, short-style
Spark Plugs and Wires: Included
Starter (P/N 19302919): Included
Flexplate (P/N 10185034): 14"
Recommended Fuel: Premium pump
Ignition Timing: 32° Total at 4,000 rpm
Maximum Recommended rpm: 5,800
Balanced: External
Intake Manifold (P/N 12363407): Dual Plane
INSTALLATION NOTES
• Due to crate fitment, the carburetor is shipped in a separate box and needs to be installed by an engine installer
• 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.
• Comes with an externally balanced 14" automatic transmission flexplate. Use flywheel P/N 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
NOTE: Distributor with melonized steel gear MUST be used with long-blocks and Partial engines with steel camshafts, or engine damage will occur.
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If you are not 100% satisfied with your purchase, you can either return your order for a full refund or exchange it for something else, for up to 60 days from the delivery/pickup date. Following are the specific time periods of our return and exchange policy:
Drop Ship Items and Garage Sale Items are not eligible for return.
*Open-box electrical & special-order/custom-order components are not eligible for returns along with drop ship and garage sale items as stated above.*
Order Cancellations: Special order items are subject to order cancellation fees (2-5%). This includes engines, short blocks, and any items that require machine work.
Refunds (if applicable)
Once your return arrives at our warehouse, please allow 3-5 business days for proper inspection, processing, and refunds to be issued. Please note; we will release your funds as soon as the return process is completed, but your financial institution can hold funds for 1-5 business days after we release them.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at amsracing@gmail.com.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, call us at 318-222-7889 and send your item to: AMS Racing, 1020 Barksdale Blvd., Bossier City LA 71111, United States.
Warranty
AMS Racing is not responsible for any labor charges associated with a defect, a failure or improperly installed component. The installer will be liable to inspect and review all components before the installation process. If a defect is found, we will work with the manufacturer directly to have it replaced.
Gifts
If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.
If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.
Shipping
To return your product, you should mail your product to: AMS Racing, 1020 Barksdale Blvd., Bossier City LA 71111, United States
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary.
If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.
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Excludes Freight Shipments ie. Engines
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