E303 Camshaft - Auto or Manual Transmission
New BOSS 302 crate engines feature race quality components at competetive pricing.
Utiilizing all forged internals the X302E and X302B crate engines are an excellent value and a solid foundation for any performance combination including forced induction.
302 cubic inches
9.0:1 compression ratio (nominal)
Forged steel connecting rods
BOSS 4-bolt main block M-6010-BOSS302
Hydraulic roller camshaft M-6250-E303 , .498" lift intake and exhaust, duration at .050" is 220 degrees intake and exhaust
Double roller timing chain set M-6268-A302
Forged steel crankshaft
Rear sump pan fits most Fox body cars
Ford Racing aluminum GT-40 "X" cylinder heads M-6049-X306 with 1.94" intake valves and 1.54" exhaust valves
Roller rocker arms
Does not include intake manifold or distributor (MSD distributor part no: M8598 recommended)
Built with all NEW Parts
Can be used in kit cars, street rods, Mustangs, Fox-bodied cars, and trucks
Depending on your application, a different timing cover, water pump, performance oil pan and pickup may be required. See installation notes INSTALLATION NOTES: See engine installation and tuning tips on page 95 Some or all of the following items may need to be changed from your original engine or modified for proper installation:
This engine has a rear sump oil pan and pickup, timing cover and reverse rotation water pump and EFI valve covers
A different performance oil pan and pickup may be required for your application. Call the Techline at (800) FORD788 for more information
The timing chain cover will work with most standard rotation water pumps.
Fuel pump eccentric M-6287-B302 installed, allows use of mechanical fuel pump
A reverse rotation water pump is installed on the engine. Other applications may require different water pumps and timing chain covers found on page 123.
The valve covers M-6582-BOSS302 should fit most non-EFI applications, optional valve covers (sold separately) are available on pages 128-130.
The damper assembly M-6316-C351 (counter weight removed) may require a spacer for pulley alignment, see page 142.
The flywheel included M-6375-D302B should work for most 157-tooth manual transmission applications. For other transmission applications use the proper neutral balance flywheel, see pages 171-172.
Firing order 1-3-7-2-6-5-4-8 (5.0L HO and 351W order)
Built with current available parts. Photo and specs may vary
Shipping weight approximately 525 lbs See Also...
Crate Engine Build-Up
Crate Engine Warranty
Engine Tips & Specs
Crate Engine Catalog
39 x 36 x 36
Engine: Complete Engines
Catalog Page Number:
Country of Origin:
California Executive Order: