1. Initial Startup:
- Ensure that the engine has proper oil and coolant levels.
- Start the engine and let it run for about 10-15 minutes at a low idle speed (around 1,000 RPM). This allows the oil to circulate and reach all engine parts.
- Check for any leaks or unusual noises during this initial startup.
2. Vary the RPM:
- After the initial 10-15 minutes, vary the engine speed between 1,000 and 2,000 RPM for about 15 minutes. This helps to seat the piston rings and ensure proper wear patterns.
- Avoid high RPMs during the break-in period.
3. Drive the Vehicle:
- Take the vehicle for a short drive (about 10 miles) at varying speeds and without heavy acceleration. This helps to load the engine and further seat the piston rings.
4. Change the Oil:
- After the initial 10-mile drive, change the oil and filter to remove any metal shavings or debris that may have accumulated during the break-in process.
5. Continue Varied Driving:
- Continue to vary the engine speed and driving conditions for the first 500 miles. Avoid long periods of constant speed driving or high RPMs.
- Keep the engine oil clean by changing it every 1,000 miles or as recommended by the engine manufacturer.
6. Final Check:
- After the initial break-in period (around 500 miles), you can gradually increase the engine speed and load. It's always a good idea to follow the specific break-in recommendations provided by the engine manufacturer for your crate motor.
Note: Break-in procedures may vary depending on the engine manufacturer's specific guidelines. It's important to refer to the documentation or instructions provided with the GM 350-290hp crate motor for any additional or specific break-in requirements.
