Choate Performance Frequently Asked Questions

At Choate Engineering Performance, we don’t just rebuild engines; we re-engineer them. Our process involves addressing known factory defects and weak points in OEM designs. We use state-of-the-art CNC machining, torque plate honing, and high-quality components to ensure that every engine leaving our facility exceeds original factory specifications for durability and performance. All done in-house in the USA.

Compatibility is key when dealing with diesel performance. We recommend having your VIN (Vehicle Identification Number) or your ESN (Engine Serial Number) ready. You can find detailed fitment information on each product page at choateperformance.com.

If you are unsure, please contact our technical support team before placing your order to verify compatibility with your specific year, make, and model.

Email: sales@choateperformance.com

Phone: 901-553-9847

A Short Block typically includes the engine block, crankshaft, camshaft, connecting rods, and pistons.

A Long Block includes everything in the Short Block plus the cylinder heads and valvetrain. Choosing between the two depends on whether your existing cylinder heads are in good enough condition to be reused.

If you have questions contact our customer support team.

Email: sales@choateperformance.com

Phone: 901-553-9847

Good Question! Our names describe what you get. See below for a breakdown:

The Model C :

Above stock level performance and comparable to OEM diesel crate motors, BUT with upgrades to fix the OEM’s shortcomings. Fun fact: The "Model C" name is our tribute to the Henry Ford Model T.

The Daily Driver:

500 HP rated. (depending on the Platform) This CHOATE engine is fully balanced, and is the perfect engine for spirited daily driving, consumer level towing, and everyday life. Upgrades over the Model C include but are not limited to: Torque Plate Honing; Full Engine Balancing; Harmonic Balancer; Head Studs; Valve Seats; Rear Cover and Pickup Tube; Oil Pans; Welded Crank Gear.

The Workhorse:

600 HP rated (Depending on the Platform). Designed with the working man in mind. The perfect platform for those who do heavy hauling regularly. Fully balanced! Upgrades over the Daily Driver include but are not limited to: O-Ringed Heads; Billet Flex Plate; Coated, Fly Cut and Delipped Pistons; Stage 2 Cam; Chromoly Pushrods; Welded Cam Gear.

The Cass-quatch:

1,000 HP and up. Full custom build. Designed for high performance, competition use. To be built based on customer’s intended use. We will need to work closely with you and the customer to build this to their requirements. Exact pricing depends on customer’s needs.

Our CHOATE ‘Full Runner’s include:

• Front Seal
• Oil Cooler
• Oil filter and base
• Low Pressure oil pump
• Rear seal
• Camshaft positioning sensor
• Crankshaft position
• Dual Thermostats
• Fuel filters
• Exhaust back pressure
• Water pump
• Glow plugs
• Push Rods
• Air intake temperature sensor
• Breather
• Up pipes
• Fuel injectors
• Fuel pump
• Oil fill cap
• EGR cooler outlet temperature
• Turbocharger- Low
• Turbocharger- High

It is hard to name all the items included because we service all 3 platforms. The Powerstroke, Cummins, and Duramax. It is always best to get a quote or look at the listing of the Full Running Engine that you are buying. The example above is an idea of what you would be getting along with your CHOATE Long Block.

Not necessarily. If your injectors are in fact good, you’re fine to reuse them. However, it is very common for trucks to run well enough with bad injectors that the driver can’t tell a difference. Even slightly bad injectors can eventually cause catastrophic damage to an engine.

We highly recommend that you get your injectors tested by a reputable facility before reinstalling them into a new engine.

Yes. While we offer standardized performance packages, Choate Engineering Performance specializes in custom builds tailored to your specific needs—whether you are looking for a reliable daily driver, a heavy-duty towing machine, or a dedicated competition truck.

Contact us to discuss your needs:

Email: sales@choateperformance.com

Phone: 901-553-9847

You can check out as a guest, but we recommend creating an account. An account allows you to track your order status in real-time, view your purchase history, and manage core return documentation more efficiently.

We accept all major credit cards (Visa, MasterCard, American Express, and Discover). We also accept wire transfers for large engine purchases and offer various financing options to help you get your truck back on the road sooner.

Absolutely. The Choate Engineering Performance website uses Industry Standard SSL (Secure Sockets Layer) encryption to protect your personal and financial data. We do not store your full credit card information on our servers.

Yes, we partner with third-party financing providers to offer flexible payment plans. You can check your eligibility directly through the checkout page on our website without affecting your credit score in most cases.

If you need to change or cancel an order, please contact us immediately. Once an order has entered the machining or shipping phase, it may be subject to restocking fees or cancellation fees, especially for custom-built engines.

Email: sales@choateperformance.com

Phone: 901-553-9847

In-stock items typically ship within 1-3 business days. For custom engine builds or out-of-stock long blocks, lead times can vary based on current demand and parts availability.

We provide estimated lead times on our product pages and will keep you updated via email throughout the build process.

For custom quotes contact our customer support team.

Email: sales@choateperformance.com

Phone: 901-553-9847

Once your order ships, you will receive an automated email with a tracking number and a link to the carrier’s website. For freight shipments, the carrier will often call you to schedule a delivery window once the shipment arrives at the local terminal.

Due to the weight and size of our engines, they are shipped via LTL (Less Than Truckload) freight. They are secured in heavy-duty custom crates to prevent damage during transit.

Smaller components and accessories are shipped via standard ground carriers like UPS or FedEx.

See our shipping policy page for details.

It is highly recommended. If you are shipping to a residential address or a shop without a dock or forklift, you must request a liftgate service during checkout. The freight carrier will use a liftgate to lower the crate to the ground, but you will still be responsible for moving the crate from the curb to your workspace.

See our shipping policy page for details.

Yes, we can ship our performance parts and engines worldwide. Please note that international customers are responsible for all duties, taxes, and brokerage fees associated with importing goods into their specific country.

International customers should contact our support team:

Email: sales@choateperformance.com

Phone: 901-553-9847

Most of our engines and major components are sold on an exchange basis. A core charge is a deposit paid at the time of purchase which is fully refundable upon the return of your old, rebuildable engine or part (the core). Once we receive your core and inspect it to ensure it meets our criteria, the core deposit will be refunded to your original payment method.

See our Core Policy page for details.

We aim to make the core return process as seamless as possible. When your new engine arrives, keep the original packaging and crate. Once your old engine is removed and drained of all fluids, secure it in the crate. Contact us to schedule a freight pickup. We handle the logistics to ensure the core returns to our facility safely.

It is important to first read our Core Policy page for detailed and up-to-date instructions.

To receive a full core refund, the core must be the same configuration as the engine purchased and must not have extensive damage such as a hole in the block, a cracked head, or fire damage. Standard wear and tear are expected.

See our Core Policy page for details.

If you are concerned about the condition of your core, please reach out to us for a pre-inspection consultation.

Email: sales@choateperformance.com

Phone: 901-553-9847

We take immense pride in our work, which is why we offer some of the most competitive warranties in the industry.

Our warranties cover defects in materials and workmanship. Specific warranty lengths (e.g., 5-year/100,000-mile) vary depending on the engine series purchased.

See our Warranty Information page for details.

While we allow for self-installation, the warranty requires that the installation follows our specific guidelines, including the replacement of certain cooling and fuel system components to prevent contamination of the new engine. We highly recommend professional installation by a certified diesel technician to ensure all parameters are met.

Proper break-in is critical for the longevity of your engine. We provide a detailed break-in guide with every engine shipment. This typically involves using a specific break-in oil, avoiding constant RPMs for the first several hundred miles, and performing a mandatory oil change after the initial break-in period.

Unopened and unused parts in their original packaging can be returned within 30 days of purchase, subject to a restocking fee.

Please note that custom-ordered parts and installed electrical components are generally not eligible for return.

Yes. We want your project to be a success. Our team of experts is available to answer technical questions regarding the installation and setup of our products. You can reach out one of the following ways:

Email: sales@choateperformance.com

Phone: 901-553-9847