Engine Break-In Procedure

Use conventional or break-in oil (non-synthetic) for the first 500 miles of operation. Do not drive for long periods at any single speed, always vary your speed. Do not tow a trailer or put other heavy loads on the vehicle. Check the engine oil and coolant levels daily. 

At 500 Miles change the engine oil and filter using conventional (non-synthetic) oil. Check fuel and ignition settings; adjust valves (where applicable).

After the first 5,000 of service synthetic engine oil may be used. Follow your vehicle owner’s manual for service intervals.

The Ford Performance D347SR7 engine has the power to win - right out of the crate. With lightweight 7MM valves, the D347SR7 features all of the latest developments and improvements from Ford Performance testing along with feedback from racers and engine builders coast to coast. These include parts to let the engine run at higher RPM for long periods without power loss. Improvements in machining minimize the power gains from blueprinting. ** SFI approved vibration damper; MSD billet distributor; ARP Head Studs; "Ford Racing" polished aluminum Circle Track valve covers M-6582-CT2; High volume oil pump; Competes directly with the GMPP "604" crate engine. Engine is internally balanced, zero balance flywheel required; Depending on your application, a different timing cover, water pump, performance oil pan and pickup may be required. Fuel pump eccentric M-6287-B302 installed, allows use of mechanical fuel pump; A standard rotation water pump is installed on the engine. Other applications may require different water pumps and timing chain covers. Firing order 1-3-7-2-6-5-4-8 (5.0L HO and 351W order). Race Application-No Warranty