LS3 CT525 Crate Engine LS3 533HP
Crate Engine - 376 Cubic Inch - 533 HP - GM LS-Series
HIGH-RPM PERFORMANCE WITH NEW FORGED PISTONS!
Chevrolet Performance’s deep-breathing, high-revving CT525 6.2L crate engine is upgraded with forged pistons designed to support its performance and enhance its durability.
The CT525 is based on the LS engine family and is similar to the 6.2L LS3, but we’ve adapted it to circle track racing with a carbureted intake manifold, 6-quart racing oil pan and more. The engine is lightweight and strong, using an aluminum block with cross-bolted 6-bolt main caps and high-flow LS3 rectangular-port cylinder heads. This combination is rated 533 hp at 6,600 rpm and a hefty 477 lb.-ft. of torque at 5,200 rpm, per Chevrolet Performance testing.
The CT525 6.2L comes with coil-on-plug ignition and an SFI-certified balancer. All that’s needed to complete the assembly is a carburetor, starter and our LS/LSX ignition controller (P/N 19355863)—all available from Chevrolet Performance.
TECH SPECS
Part Number: 19418211
Engine Type: LS-Series Gen IV Small-Block V-8
Displacement (cu in): 376 (6.2L)
Bore x Stroke (in): 4.000 x 3.62 (103.25 x 92mm)
Block (P/N 12673475): Cast aluminum with 6-bolt, cross-bolted main caps
Crankshaft (P/N 12597569): Nodular iron
Connecting Rods (P/N 12649190): Powdered metal
Pistons (P/N 19418214): Forged aluminum
Camshaft Type (P/N 88958770): Hydraulic roller
Valve Lift (in): .525 intake / .525 exhaust
Camshaft Duration (@.050 in): 226° intake / 236° exhaust
Cylinder Heads (P/N 12675871): LS3 rectangular port; aluminum as-cast with 68cc chambers
Valve Size (in): 2.165 intake / 1.590 exhaust
Compression Ratio: 10.7:1 Nominal
Rocker Arms (P/N 12696105 int): Investment-cast, roller trunnion
Rocker Arms (P/N 12681275 exh): Investment-cast, roller trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: Premium pump
Maximum Recommended rpm: 6,700
Reluctor Wheel: 58x
Balanced: Internal
INSTALLATION NOTES
• Use LS/LSX ignition controller P/N 19355863 (not included)
• Requires addition of carburetor, starter, fuel system, exhaust system and front accessory drive system
• The 6-quart circle track oil pan is designed to clear most GM rear-steer chassis with stock engine location
• The engine is designed for circle track racing only. It is not intended for street use
• The CT525 does not include a water pump or factory exhaust manifolds
• Chevrolet Performance Circle Track racing engines include anti-tampering seals installed
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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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