302 CUBIC INCH 345 HP BOSS CRATE ENGINE WITH "B" CAM

This part is no longer available.
    B303 Camshaft - For use with Manual Transmission
  • New BOSS 302 crate engines feature race quality components at competitive 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
  • 345 hp
  • 9.0:1 compression ratio (nominal)
  • Forged pistons
  • Forged steel connecting rods
  • BOSS 4-bolt main block M-6010-BOSS302
  • Hydraulic roller camshaft M-6250-B303 , .480" lift intake and exhaust, duration at .050" is 224 degrees intake and exhaust
  • Double roller timing chain set M-6268-A302
  • Forged steel crankshaft
  • Rear sump pan fits most Fox body cars
  • Ford Performance aluminum GT-40 cylinder heads M-6049-X306 with 1.94" intake valves and 1.54" exhaust valves
  • Roller rocker arms - 1.60:1 ratio M-6564-B351
  • Includes M-6375-D302B steel flywheel
  • Does not include intake manifold or distributor (MSD Part no: 8598 recommended)
  • Built with all NEW Parts
  • Can be used in kit cars, street rods, Mustangs, Fox-bodied cars, and trucks
INSTALLATION NOTES: Some or all of the following items may need to be changed from your original engine or modified for proper installation: 
  • Depending on your application, a different timing cover, water pump, oil pan and pickup may be required.
  • Engine has a rear sump oil pan and pickup, standard rotation timing cover, reverse rotation water pump and non-EFI valve covers.
  • Timing 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. Other applications may require different water pump and timing chain cover.
  • Valve covers M-6582-W351PR should fit most non-EFI applications. Optional valve covers sold separately.
  • The damper M-6316-D302 may require a spacer for pulley alignment.
  • Flywheel included - M-6375-D302B, will work for most 157-tooth manual transmission applications. For other transmissions use the proper neutral balance flywheel.
  • Intake manifold not included
  • Includes intake gaskets M-9439-A50 as well as pilot bearing
  • Firing order 1-3-7-2-6-5-4-8 (5.0L HO and 351W firing order)
  • Steel distributor gear required
  • Shipping weight approximately 525 lbs
  • Built with current available parts. Photo and specs may vary.
  • Engine installation and tuning tips can be found HERE
Part Type
Engine: Complete Engines
Instruction Sheet
Warranty Availability
Package Dimensions
36" x 39" x 36"
Package Weight
528 lb(s)
UPC Code
756122102718
Country of Origin
United States