ENGINE BREAK IN PROCEDURE Ensure all accessories (headers, alternator, power steering pump, etc.) are tight and check for any water /oil leaks. Even if your engine came complete, it’s best to check all major components such as Distributor, Spark Plugs, Wires, Carburetor etc as it could have been damaged or disturbed during shipping. 1. You will need to fill the engine with oil as they are shipped dry. Most engines use 5 quarts total, if unsure check with ATK tech for assistance. When installing an oil filter, fill it ½ way with oil and lube the rubber gasket that surrounds the filter with oil, than tighten by hand. We recommend WIX or other premium brand oil filters. We recommend Joe Gibbs Racing Oil BR40 especially in flat tappet engines, if this is not available to you then a 10w30 with an engine break in additive (ZDDP, or ZINC camshaft additive) will do. ATK also recommends running a zinc additive throughout the life of the engine. It is best to prime the oil system with an engine priming tool or a Pre Luber offered by ATK even if the engine has been dyno tested. 2. We recommend that a new engine is first broken in with regular mineral type engine oil with zinc additive. Do not run synthetic oils until 4,000+ miles are put on the engine. If you fail to follow this procedure, the rings may never seat. 3. The distributor timing should be set to a baseline if your engine was dyno tested and came with a dyno report, but occasionally it is disturbed during shipment. If your engine was complete, but not dyno tested you will still need to verify timing. Non Dyno tested engines come set at approximately 34-36 degrees without Vacuum Advance hooked up (must have vacuum port plugged to verify). DO NOT ASSUME because it fired up, it is correct. If the engine does not fire immediately you may need to recheck the timing. 4. Set the ignition timing after engine starts. The starting point to set timing for most carbureted engines is 34 degrees before top dead center (BTDC) with the vacuum advance disconnected (must plug vacuum port) and running at 3,000 rpm. Some experimentation with timing is required for optimal results with locally available fuel, but it should be between 32-36 BTDC. 5. Even if your engine came with a carburetor, it may still need to be setup correctly for your application. The engine Dyno is only a simulation, tuning specs change once installed in a vehicle due to different elevations and vacuum accessories are hooked up. Please refer to the instruction manual to properly set the floats, idle speed, and air/fuel mixture screws for optimal performance. See ATK Tips below. 6. Flat tappet hydraulic cams only - Run the engine between 2,000 and 2,500 RPM's, with no-load on the engine for the first 30 minutes. Let the engine cool down completely and repeat process 2-3 more times. Do not idle the engine for any extended period at this time, this is critical to break in the camshaft. We have usually performed this step at ATK if the Dyno Test and Tune option was purchased. 7. Roller Cam engines do not need to follow the procedure in step 6. 8. Remember that the cooling system on a fresh engine swap will have a lot of trapped air, which will lead to wild temperature gauge readings and possible water pump cavitations (water pump not moving coolant due to trapped air). To help avoid trapped air in the cooling system, try to fill the cooling system up with a 50/50 mix of quality coolant and water a few hours before you plan on starting the engine. Leave the radiator cap off during this time. We also recommend removing one of the water crossover plugs in the intake while filling the cooling system. This will tend to help purge a fair amount of trapped air before you start the engine. Also helpful during break-in is to use a Lever-Vent type radiator cap on your radiator in so that you can manually purge trapped air while engine is running- (use extreme caution to avoid being burned by hot coolant). Your normal cap can then be re-installed after engine cools off. See ATK Tips below. 9. The worst thing for a new engine is to let it sit there and idle. The engine needs to build up cylinder pressure in order to expand the piston rings and allow them to seat. Failure to properly break in the engine can cause the rings to not seat and produce blow by as well as poor performance. This applies to engines that were dyno tested as well. Drive the vehicle while varying speeds and loads on the engine for the first 200 miles. Occasional full throttle runs from a rolling start (2,000 rpm or so) to 4,500 rpm will help seat the piston rings. After 150-200 miles, it is recommended to check the rockers/valve clearance to ensure adjusters are tight and valve lash is correct (do this again at 500 miles) as well as re-torqueing the head bolts and intake manifold bolts. The following two steps are not necessary, but may help speed up the break-in process. 10. After the initial 200 miles run five or six medium-throttle accelerations to about 4500 RPM (observing local laws of course), then letting off in gear and coasting back down to 20 MPH. 11. Run a couple hard throttle accelerations up to about 5000 RPM, then letting off in gear and coasting back down to 20 MPH. 12. After 500 miles are on the engine, change the oil, filter and check coolant level (top off if necessary). 13. Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading. It is best to avoid long periods of idling during this period. 15. Change the oil and oil filter again at 1,000 miles. Continue using mineral oils and zinc additive, until about 4,000 miles. At that point, you should be able to run a quality 10w30 synthetic oil if you choose. 16. All ATK HP Engines require Premium fuel of 91+ Octane. ATK ENGINE INSTALLER TIPS PCV: ATK Recommends running name brand PCV valves (AC Delco, Chevrolet Performance or Motocraft) from older high horsepower vehicles. Due to the camshafts used in our engines, 60’s muscle cars, or low powered 4 cylinder engines PCV valve will work best. Install the PCV valve in the port at the base of carburetor or manifold port, use PCV hose only, not fuel line. Be sure to have fresh air to the opposite valve cover, through a breather or through the port in the air cleaner. An incorrect PCV system can cause the engine to burn oil, run rough, have poor performance and cause blow by. Cooling: We recommend running the OE Fan/Clutch assembly with the fan shroud and a Performance grade radiator. The OE Fan setup produces much more CFM than most aftermarket electric fans and will cool better. If you do decide to swap to an electric fan, look for the most CFM possible with a fan shroud to direct air flow. We often see overheating problems due to customers using low quality electric fans/no shrouds. Overheating is a cooling issue, not an engine issue. Thermostat: ATK recommends a 180-195 degree thermostat (with bypass holes drilled if you are not running the bypass hose) to properly maintain temperature. Do not run a 160 degree thermostat as this can often allow the thermostat to remain open causing the engine to run hotter and or overheat. Carburetor: Adjust the mixture screws all the way in and then back out 1 turn. Adjust the idle speed screw to as low as it can be without stalling the engine, then adjust the mixture screws in/out equally until engine idles up the highest, readjust the idle speed down and repeat the process. When no more improvement is evident, reset the idle speed screw to the desired idle RPM (800-1000 rpm). Adjust the choke per carburetor instructions. Recommended fuel pressure is typically between 5-6 PSI for all ATK engine combinations. In some cases you may need to run a fuel pressure regulator, as fuel pumps tend to put out more than 6 PSI and can create tuning issues. Misc. Notes: Use Iron distributor gears only as our cams are Nodular Iron cores, not Billet. Do not use Bronze or Steel gears. Use Standard fuel pump pushrods in GM engines, we recommend Pioneer #FPR-1936. DO NOT USE BRASS. Old/Contaminated fuel can cause the engine to run poorly and make it difficult to tune. It can also contain debris that can get into the carburetor causing the floats to stick getting lodged in the needle/seat. If your engine is going to sit without being run for long periods of time, this can cause the seals/gaskets in the carburetor to go bad and may need to be rebuilt.

Part # SP26 Engine Specifications:  Block: Seasoned 6.0L LQ4  Year Range: 2001-2007  Bore/Stroke: 4.030” x 4.000”  Displacement (cu.in): 408  Crankshaft: Manley 4340 forged 58 tooth reluctor wheel  Rods: Manley 4340 forged H beam 6.125” ARP 8740 bolts  Pistons: Manley 2618 forged -10cc dished moly skirt coated  Rings: Plasmamoly  Compression Ratios: 64cc = 11.2:1 / 68cc = 10.7:1 / 72cc = 10.3:1 (can vary due to deck height/gasket thickness)  Camshaft Bearings: Installed & Clocked to OEM Position  Freeze Plugs: Installed & Sealed  Oil Galley Plugs: Installed & Sealed Recommended Components:  Balancer- Internal balance  Flex plate/ Flywheel- Internal balance  Head Gasket: .051” or per application  Oil Pump: Melling #10295 with high pressure spring Engine Info:  Oil: 10W40 Non synthetic for first 3000 miles  Oil Filter: Wix or K&N per application Disclaimer: The recommended components listed are ATK’s recommendations of parts to be used, applications vary and your build may need something different. Contact ATK for a recommendation if you’re not certain about a component to use. It is the customer’s responsibility to verify components will work in their application. Some modifications to the vehicle may be required using these and or other aftermarket parts. . ATK reserves the right to substitute parts used in engines if necessary

PRODUCT WARRANTY INFORMATION R0572009-06, March 2024 Congratulations on your decision to purchase a quality product from ATK. We appreciate your business and confidence in the ATK brand, our products, and our personalized customer service and support. This document explains, in detail, the warranty coverages that apply to the product you’ve purchased. Please keep it available for future reference. ATK Product Warranty Page 2 R0572009-06, March 2024 Important information you should know KNOW WHEN YOUR WARRANTY BEGINS Your warranty period begins 10 days following the original purchase date. The warranty period continues for the period of time specified in the table on page 5. REGISTERING YOUR WARRANTY While warranty registration is not necessary to obtain warranty coverage on ATK products, we strongly suggest that you register your product. Information on registering your product is available on page 9. If you do not register your product, you must save your proof-of-purchase receipt. If you’re not able to provide proof of the initial purchase date at the t ime of warranty service, the manufacturing date of the product will be used to determine the warranty period. WHAT THIS WARRANTY COVERS This warranty covers issues related to defective material and/or workmanship of the purchased product only. It does not cover the replacement or refund of the equipment in which the product may be installed. ATK shall not be responsible for lost profits (sales or income) or injury to person or property, towing charges, storage fees, telephone calls, freight, substitute transportation, lodging, or unauthorized repairs. Your sole and exclusive remedy against ATK for breach of contract, warranty, or performance shall be for the repair or replacement of the purchased product as set forth in this document. MAINTAIN YOUR VEHICLE PROPERLY It is your responsibility to make sure that all of the scheduled maintenance is performed and that materials used for maintenance meet engineering specifications. Failure to perform scheduled maintenance as specified may invalidate warranty coverage on your product. IF YOU NEED CUSTOMER ASSISTANCE When you need warranty repairs, you have the freedom to use the Licensed Automotive Repair Facility of your choice. You may also visit https:// MyCarCare.info and select Warranty Claims or contact ATK Customer Service at 800-421-3746 regarding warranty service information. ATK Product Warranty Page 3 R0572009-06, March 2024 liable for incidental or consequential damages to the extent exclusion is permitted by law. ATK product warranty policy LIMITED WARRANTY ATK will repair or replace, free of charge, any part of the product that is defective in material or workmanship or both. Transportation charges on products submitted for repair or replacement under this warranty will be covered by ATK. This warranty is effective for and is subject to the t ime periods and conditions stated in this warranty document. For warranty service, please visit https://MyCarCare.com and select Warranty Claims or contact Customer Service at 800-421-3746. This is ATK Engines only express warranty. Warranties implied by law, including those of merchantability and f itness for a particular purpose, are limited to one year from purchase (to the extent permitted by law), and all other implied warranties are excluded. ATK shall not be Some states or countries do not allow limitations on how long an implied warranty lasts, and some states or countries do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation and exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state and country to country. INTERNATIONAL SALES ATK warrants their products for vehicles operating in the United States only. GOVERNING LAW AND VENUE The terms and provisions of this limited warranty shall be governed by and construed according to the laws of the State of Illinois, without reference to its rules relating to choice of law provisions. Any action at law, suit in equity or judicial proceeding for the enforcement of this limited warranty or any provision thereof shall be brought exclusively before the United States District Court for the Northern District of Illinois or any state court sitting in Cook County, Illinois. This limited warranty gives you specific legal rights. You may also have other rights, which vary from state to state. ATK Product Warranty Page 4 R0572009-06, March 2024 R0572009-06, March 2024 ATK Product Warranty Page 5 STANDARD WARRANTY TERMS There may be additional warranty coverage that was not determined at the time this list was created. For the current warranty terms for your product or to establish a warranty claim, visit https://MyCarCare.com and select Warranty Claims or contact Customer Service at 800-421-3746 Gasoline Engines (NFWG Warranty) Automobiles and Light Trucks less than 11,000 lbs. Gross Vehicle Weight including commercial applications - 4 years, unlimited mileage- Up to $95/hour labor reimbursement - Towing up to $100 per occurrence - Rental car up to 5 days @ up to $30 per day. - Fluids up to $50 per occurrence Medium/Heavy Duty Trucks 11,000 lbs. Gross Vehicle Weight or heavier including commercial applications - 12 months or 12,000 miles- Up to $95/hour labor reimbursement - Towing up to $100 per occurrence - Rental car up to 5 days @ up to $30 per day. - Fluids up to $50 per occurrence High Performance Engines High Performance - 2 years, unlimited miles – Up to $95/hour labor reimbursement Short Block - 90 days - No labor reimbursement Marine Engines (NFWG Warranty) Marine Engines - 18 months, unlimited hours - Up to $95/hour labor reimbursement with an $800 cap - Up to $100 tow/haul out allowance - Up to $50 fluid allowance Transmissions (NFWG Warranty) Automatic Transmissions less than 11,000 lbs. Gross Vehicle Weight - 3 years, unlimited miles- Up to $95/hour labor reimbursement - Towing up to $100 per occurrence -Up to $150 Rental car allowance - Fluids up to $50 per occurrence Automatic Transmissions 11,000 lbs. Gross Vehicle Weight or heavier - 18 months, 18,000 miles- Up to $95/hour labor reimbursement - Towing up to $100 per occurrence -Up to $150 Rental car allowance - Fluids up to $50 per occurrence Differentials (Transaxles) Automobiles and Light Trucks less than 11,000 lbs. Gross Vehicle Weight - 3 years, unlimited miles - $50/hour labor reimbursement Medium/Heavy Duty Trucks 11,000 lbs. Gross Vehicle Weight or heavier - 12 months, 12,000 miles - $50/hour labor reimbursement *NFWG programs are no longer valid after the 1st. denied replacement engine claim. NFWG is only valid on products originally installed by a Licensed Automotive Repair Facility* Cylin der Heads Cylinder Heads - 12 months, 12,000 miles - $50/hour labor reimbursement Bare heads sold - Fit and finish only - No labor reimbursement About your warranty ATK welcomes warranty repairs and extends apologies to you for any inconvenience. You have the freedom to use the Licensed Automotive Repair Facility (FACILITY) of your choice. Any FACILITY may perform warranty repairs. Most warranty repairs are handled routinely, but sometimes requests for warranty service may not be appropriate. If you disagree with the decision of an ATK Warranty Technician and/or the FACILITY, an investigation will be made to determine whether the warranty applies. In this case, ask the FACILITY to submit all supporting facts to ATK for review. If ATK decides that the claim is justified, you will be fully reimbursed for those items that are defective. To avoid misunderstanding, some of the causes of engine failure that the warranty does not cover are listed below. NORMAL WEAR Our products, like all mechanical devices, need periodic parts service and replacement to perform correctly. ATK’s warranty will not cover repair when normal use has exhausted the life of any part of our product. Additionally, ATK’s warranty would not apply if damage to the product has occurred because of misuse, lack of routine maintenance, shipping, handling, warehousing, or improper installation. Similarly, our warranty is void if the serial number of the product has been removed or the product has been altered or modified. IMPROPER MAINTENANCE The life of a mechanical device depends upon the conditions under which it operates and the care it receives. Wear, when caused by dirt, dust, spark plug cleaning grit, or other abrasive material that has entered the engine because of improper maintenance, is not covered by warranty. DO-IT-YOURSELF INSTALLATION AND REPAIRS DIY installations, DIY repairs, repairs performed by unlicensed repair facilities, or repairs made to units not originally installed by a Licensed Automotive Repair Facility do not qualify for labor reimbursements. Warranty repairs must be completed by Licensed Automotive Repair Facilities. WHAT THIS WARRANTY DOES NOT COVER ATK’s warranty does not extend to repairs required because of: 1. Problems caused by parts that are not ATK parts. 2. Damage as a result of overheating, lack of lubrication, fuel wash, or contamination. 3. Damage resulting from pre-ignition or detonation, including but not limited to melted or broken pistons, broken piston rings, damaged cylinder heads, leaking head gaskets, etc. For more information regarding pre-ignition and detonation coverage, please contact Customer Service at 800-421-3746. 4. Repair or replacement required as a result of any accident or misuse. 5. Repair or replacement of any accessory or service item, including specifically but not limited to: all components of the cooling, fuel, electrical, and ignition systems, in addition to all belts, hoses, and filters. 6. Any product used for competition, racing, or related purposes. 7. Any product to which a device or accessory is installed that does not conform to the original manufacturer’s specifications. 8. Damage as a result of electrolysis, including but not limited to, deterioration of engine components as a result of excessive electrical current, including corroded freeze plugs, head gaskets, cylinder heads, or blocks. 9. Improperly maintained or incorrect coolant and/or any product on which periodic maintenance services required by the original manufacturer have not been performed. 10. A crankshaft thrust surface that is worn due to excessive forward pressure placed on the rear of the crankshaft. 11. Damage resulting from improper repair(s) or attempted repair(s) by any service technician. 12. Leaking carburetors, clogged fuel pipes, sticking valves, or other damage, caused by using contaminated or stale fuel. 13. Parts which are scored or broken because an engine was operated with insufficient or contaminated lubricating oil or an incorrect grade of lubricating oil. Engine damage may occur if oil level is not properly maintained. Check and refill when necessary, and change at recommended intervals. 14. Repair or adjustment of associated parts or assemblies such as clutches and transmissions. 15. Damage or wear to parts caused by dirt, which entered the engine because of improper air cleaner maintenance, re assembly, or use of a non-original air cleaner element or cartridge. At recommended intervals, clean and/or replace the filter as stated in your vehicle’s operator’s manual. ATK Product Warranty Page 6 R0572009-06, March 2024 16. Engine or equipment parts broken by excessive vibration caused by a loose engine mounting, improper attachment of equipment to engine crankshaft, or other abuse in operation. 17. Lack of routine tune-ups or adjustments of the engine. 18. Engine or engine component failure (e.g., combustion chamber, valves, valve seats, valve guides, or burned starter motor windings) caused by the use of alternate fuels such as liquefied petroleum, natural gas, altered gasolines, etc. 19. Products used in a manner that violates the terms of the ATK’s warranty or are used for purposes other than their original intended use. This warranty does not apply to products installed on any recreational vehicles over 11,000 lbs. Gross Vehicle Weight, which includes most Class A, Class B, and Class C motorhomes and bus conversions. Additionally, products used in competitive racing or on commercial or rental racetracks are not covered. ATK’s warranty does not cover products if they are used in an application for which they were not engineered (e.g., using standard gasoline engines in a marine application). PRODUCT REPAIRS OR REPLACEMENTS All repairs and/or replacements to the product must first be authorized by ATK before the repair or replacement takes place. ATK will not pay for any unauthorized repairs. ATK, at its option, will repair or replace a product once it determines that the product is defective. For a product to be determined defective, it must be sent to ATK for inspection. ATK will schedule the pickup of the product and pay for its transportation. Any products that are not returned to ATK for inspection will not be covered by this warranty. Products sent to ATK for inspection that are deemed not covered by warranty will be held in storage for a period of seven (7) days. After seven days, products will be disposed of by ATK. Replacement products must be of the same displacement as the original products. These are VIN-specific. Pre-paid transportation for part returns under this warranty is limited to domestic United States shipments. Any product replaced under warranty carries the remainder of the original product’s warranty term. LABOR PAYMENTS FOR APPROVED CLAIMS Authorized repairs will be reimbursed at a rate not too exceed the Mitchell® Repair Manual published applicable flat-rate schedule. Hourly rates for all authorized repairs will be paid in accordance with rate paid for the original installation but not to exceed the hourly rates set forth for your product in the table on page 5. Coverage excludes labor for removal of accessories that are not specific to the original manufacturer chassis. DIY repairs and repairs performed by unlicensed repair facilities will not be reimbursed. PAYMENT FOR WARRANTABLE PARTS Covered parts on approved claims will be reimbursed at the purchase price. Proof of purchase is required - a 20% deduction will be incurred for claims without the original parts bill. Fluid and filter replacement costs will only be reimbursed for the f irst 2,000 miles of service. ATK Product Warranty Page 7 R0572009-06, March 2024 Installation, break-in procedures, and maintenance ATK remanufactured products are designed to provide years of trouble-free service. In order for your ATK remanufactured product to perform as expected, it must be installed correctly, operated responsibly, and properly maintained. Failure to perform these procedures may result in damage to the product. This damage may not be covered under warranty. ENGINES AND CYLINDER HEADS Once the product has been installed, it is your responsibility to “break in” the product properly. After the break-in period and 600-mile checkup, you must maintain the product to the original manufacturer’s specifications. If you are unsure of the maintenance schedule or have questions regarding your ATK engine or cylinder head, please contact Customer Service at 800-421-3746. INITIAL STARTUP When applicable, valves must be readjusted to your vehicle’s manufacturer’s specifications. Refer to the factory shop manual or contact Customer Service for the proper procedure for your engine type. BREAK-IN PROCEDURES FOR ENGINES Your ATK remanufactured engine requires special care during its initial break-in period. To ensure your engine’s long life expectancy and proper engine performance, please follow these procedures during the first 600 miles of operation. ✓ Vary your driving speed. Do not drive for long periods at any single speed. ✓ Do not tow a trailer or subject your vehicle to other heavy loads. ✓ Check the engine oil and coolant levels daily. 600 MILE CHECKUP FOR ENGINES ✓ Check fuel and ignition settings. ✓ Change the engine oil and filter. ✓ Adjust valves (where applicable). ✓ ATK does not recommend using synthetic engine oil until after the first 5,000 miles of service. Follow your vehicle owner’s manual for service intervals. AUTOMATIC TRANSMISSIONS ATK remanufactured transmissions are built to Original Equipment Manufacturer (OEM) specifications. When properly maintained and operated, they should provide many years of trouble-free service. It is your responsibility to maintain your transmission in accordance with the original manufacturer’s specifications. FIRST 500 MILES OF SERVICE Newly-installed, remanufactured transmissions do not require any type of break-in procedure. ATK Product Warranty Page 8 R0572009-06, March 2024 However, ATK recommends checking the transmission f luid level every 100 miles for the first 500 miles of service. Please refer to your vehicle’s owner’s manual for instructions on checking fluid levels and adding additional transmission fluid. If the fluid level is low, add the proper amount of the correct type of fluid and return to a Licensed Automotive Repair Facility for a check of all transmission lines and seals. SCHEDULED MAINTENANCE In order to keep your ATK warranty in effect, you must follow the transmission maintenance scheduled as Register your product outlined in the vehicle’s owner’s manual. If you are unsure of the maintenance schedule or have questions regarding your ATK transmission, please contact Customer Service at 800-421-3746. We encourage you to register your product for optimal warranty coverage and service. For your convenience, you can register your ATK product online quickly and easily. Visit our website at https://MyCarCare.info and click the Warranty Registration link. Then, provide your information and click Submit. Be sure to have your product part number, serial number, VIN, mileage-at installation, and installation date available when you visit https://MyCarCare.info to register. Please retain all service records (repair orders, invoices, etc.) related to the ATK product’s maintenance and service. In the event of a product failure, you may be required to provide copies of your installation invoice and any maintenance records regarding the installed product