Features

• Forged pistons
• Forged steel connecting rods
• Forged steel crankshaft
• 9.0:1 compression ratio (nominal)
• BOSS 4-bolt main block M-6010-BOSS302
• Hydraulic roller camshaft M-6250-E303, .498 in. lift intake and exhaust, 220 degrees intake and exhaust duration at .050 in. lift
• Double roller timing chain set M-6268-A302
• Rear sump pan fits most Fox body cars
• Ford Racing aluminum GT-40 cylinder heads M-6049-X2 with 1.940 in. intake valves and 1.540 in. exhaust valves
• Roller rocker arms
• Includes M-6375-D302 steel 157-tooth flywheel (neutral balance)
• Does not include intake manifold or distributor (MSD Part no: 8598 recommended)

INSTALLATION NOTES:

• Depending on your application, a different timing cover, water pump, performance oil pan, and pickup may be required 
• Includes rear sump oil pan and pickup, reverse rotation water pump, timing cover (timing cover will work with most standard rotation water pumps), and non-EFI valve covers
• A reverse rotation water pump is installed on the engine. Other applications may require different water pumps and timing chain covers
• Fuel pump eccentric M-6287-B302 installed, allows the use of a mechanical fuel pump
• Valve covers M-6582-W351PR should fit most non-EFI applications
• Damper assembly M-6316-C351 (counterweight removed) may require a spacer for pulley alignment
• Included flywheel M-6375-D302B should work for most 157-tooth manual transmission applications. For other transmission applications use the proper neutral balance flywheel
• Firing order 1-3-7-2-6-5-4-8 (5.0L HO and 351W order)

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.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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