cam selection 303
Not to hijack, just to clear up some things for myself: are the ford letter cams just kind of generic grinds for easy and quick cam choosing?
i dont know much about cams(the numbers confuse me and i dont know what they mean)
i want an e cam because i love the lope but a lot of ppl keep telling me no lol
i dont know much about cams(the numbers confuse me and i dont know what they mean)
i want an e cam because i love the lope but a lot of ppl keep telling me no lol
Ford Racing Camshafts
B303 - 224*/224* 284*/284* - .480"/.480" - .300"/.300" - 112* - 107* ATDC /117* BTDC - 3,300-5,100 RPM
Overlap: 60 degrees.
1.6 Rocker Ratio
Intake Opening: 5* BTDC
Intake Closing: 39* ABDC
Exhaust Opening: 49* BBDC
Exhaust Closing: 5* BTDC
E303 - 220*/220* - 282*/282* - .498"/.498" - .311"/.311" - 110* - 110*/110* - 2,500-5,500 RPM
Overlap: 62 degrees.
1.6 Rocker Ratio
Intake Opening: 0* BTDC
Intake Closing: 40* ABDC
Exhaust Opening: 40* BBDC
Exhaust Closing: 0* BTDC
F303 - 226*/226* - 288*/288* - .512"/.512" - .320"/.320" - 114* - 109*/119* - 2,800-6,000 RPM
Overlap: 60 degrees.
1.6 Rocker Ratio
Intake Opening: 4* BTDC
Intake Closing: 42* ABDC
Exhaust Opening: 52* BBDC
Exhaust Closing: 6* BTDC
X303 - 224*/224* - 286*/286* - .542"/.542" - .339"/.339" - 112* - 107*/117* - 3,500-6,500 RPM
Overlap: 62 degrees.
1.6 Rocker Ratio
Intake Opening: 5* BTDC
Intake Closing: 39* ABDC
Exhaust Opening: 49* BBDC
Exhaust Closing: 5* BTDC
Z303 - 228*/228* - 290*/290* - .552"/.552" - .345"/.345" - 112* - 107*/117* - Up to 6,500
Overlap: 66 degrees.
1.6 Rocker Ratio
Intake Opening: 7* BTDC
Intake Closing: 41* ABDC
Exhaust Opening: 51* BBDC
Exhaust Closing: 3* BTDC
Custom grind is always the best method, but not always the most affordable.
Look to spend an extra $130 or so for a custom grind cam.
It is well worth it to me for better driveability and power at the same time for those nice heads you have.
B303 - 224*/224* 284*/284* - .480"/.480" - .300"/.300" - 112* - 107* ATDC /117* BTDC - 3,300-5,100 RPM
Overlap: 60 degrees.
1.6 Rocker Ratio
Intake Opening: 5* BTDC
Intake Closing: 39* ABDC
Exhaust Opening: 49* BBDC
Exhaust Closing: 5* BTDC
E303 - 220*/220* - 282*/282* - .498"/.498" - .311"/.311" - 110* - 110*/110* - 2,500-5,500 RPM
Overlap: 62 degrees.
1.6 Rocker Ratio
Intake Opening: 0* BTDC
Intake Closing: 40* ABDC
Exhaust Opening: 40* BBDC
Exhaust Closing: 0* BTDC
F303 - 226*/226* - 288*/288* - .512"/.512" - .320"/.320" - 114* - 109*/119* - 2,800-6,000 RPM
Overlap: 60 degrees.
1.6 Rocker Ratio
Intake Opening: 4* BTDC
Intake Closing: 42* ABDC
Exhaust Opening: 52* BBDC
Exhaust Closing: 6* BTDC
X303 - 224*/224* - 286*/286* - .542"/.542" - .339"/.339" - 112* - 107*/117* - 3,500-6,500 RPM
Overlap: 62 degrees.
1.6 Rocker Ratio
Intake Opening: 5* BTDC
Intake Closing: 39* ABDC
Exhaust Opening: 49* BBDC
Exhaust Closing: 5* BTDC
Z303 - 228*/228* - 290*/290* - .552"/.552" - .345"/.345" - 112* - 107*/117* - Up to 6,500
Overlap: 66 degrees.
1.6 Rocker Ratio
Intake Opening: 7* BTDC
Intake Closing: 41* ABDC
Exhaust Opening: 51* BBDC
Exhaust Closing: 3* BTDC
Custom grind is always the best method, but not always the most affordable.
Look to spend an extra $130 or so for a custom grind cam.
It is well worth it to me for better driveability and power at the same time for those nice heads you have.
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junior04
4.6L (1996-2004 Modular) Mustang
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Sep 28, 2015 10:53 AM




