Chevrolet Performance DR525 376ci NMCA LS Stock Class Spec Engine 525 HP

INSTALLATION NOTES:

• Assembly does not include any electronics
• Requires P/N 809-19329003 E67 Chevrolet Performance Engine control system w/custom calibration (tamper-proof Engine Control Unit)
• Optional Front Accessory Drive P/N 809-19329418 contains Alternator, Installation Hardware, and Drive Belt. (Not included w/engine assembly)
• Intended for pre-1976 street vehicles or off-road vehicles
• Not intended for marine applications
• P/N 809-19329009 engine equipped with Muscle Car oil pan
• P/N 809-19329008 engine equipped with Fourth Gen Camaro/Firebird oil pan

Engine Break-In Procedure

Fill the engine with Mobil 1 15W50 motor oil and follow the proper engine priming procedure.  Also check and fill as required any other necessary fluids such as coolant, power steering fluid, etc.  

Start the engine and listen for any unusual noises. If no unusual noises are noted, run the engine from idle to approximately 1800 RPM, then 0% throttle back to idle. Perform this sequence continuously up and down until normal operating temperature is reached. DO NOT RUN THE ENGINE AT A CONSTANT HIGH RPM WITH NO LOAD. VARYING RPM, IDLE TO 1800 RPM UP AND DOWN IS ALL THAT IS NEEDED. The engine should be run for one hour without wide-open throttle (WOT) or sustained high RPM accelerations. When possible, you should always allow the engine to warm up prior to driving. It is a good practice to allow the oil sump and water temperature to reach 180°F before applying heavy loads or performing hard acceleration runs. Run 5-6 medium-throttle accelerations to about 4500 rpm and let off in gear and coast back down to 2000 rpm, after each acceleration.  Perform several (WOT) accelerations to 5000 rpm. Allow the engine to return to idle, with the throttle blade shut. This procedure will assist in seating the rings properly.  Change the oil and filter.

19432630 supersedes 19329009