| PART NUMBER | ENGINE | ROCKER RATIO |
INTAKE
EVENTS (0.050") |
EXHAUST
EVENTS (0.050") |
DURATION (SAE) |
LIFT (INCHES) |
LOBE CENTER | |||||
| OPEN | CLOSE | OPEN | CLOSE | INT. | EXH. | LOBE | VALVE | INT. | EXH. | |||
| M-6250-B303* (1)(2)(3)(7) |
1985 and Later 302 Roller Cam | 1.60 | 5° BTC | 39° ABC | 49° BBC | 5° BTC | 284° | 284° | .300 I | .480 I | 107° | 117° |
| 224° | 224° | .300 E | .480 E | |||||||||
| M-6250-E303 (1)(2)(3)(7)(8) |
1985 and Later 302 Roller Cam | 1.60 | 0° BTC | 40° ABC | 40° BBC | 0° BTC | 282° | 282° | .311 I | .498 I | 110° | 110° |
| 220° | 220° | .311 E | .498 E | |||||||||
| M-6250-F303* (1)(2)(3)(4)(7)(9) |
1985 and Later 302 Roller Cam | 1.60 | 4° BTC | 42° ABC | 52° BBC | 6° BTC | 288° | 288° | .320 I | .512 I | 109° | 119° |
| 226° | 226° | .320 E | .512 E | |||||||||
| M-6250-G303* (1)(2)(3)(4)(7)(12)(13) |
1985 and Later 302 Roller Cam | 1.60 | -° BTC | -° ABC | -° BBC | -° BTC | -° | -° | .311 I | .498 I | -° | -° |
| 226° | 228° | .319 E | .510 E | |||||||||
| M-6250-X303* (1)(2)(3)(4)(7)(10) |
1985 and Later 302 Roller Cam | 1.60 | 5° BTC | 39° ABC | 49° BBC | 5° BTC | 286° | 286° | .339 I | .542 I | 107° | 117° |
| 224° | 224° | .339 E | .542 E | |||||||||
| M-6250-Z303* (1)(2)(3)(4)(5)(7)(11) |
1985 and Later 302 Roller Cam | 1.60 | 7° BTC | 41° ABC | 51° BBC | 3° ATC | 290° | 290° | .345 I | .552 I | 107° | 117° |
| 228° | 228° | .345 E | .552 E | |||||||||
NOTE: Camshaft intake and exhaust valve events
are measured at 0.050" tappet lift. The duration figures in the shaded area are
taken at 0.050" tappet lift. This is useful to check the cam with a degree wheel
during installation. The solid color is advertised duration. For comparison
purposes, add intake and exhaust lobe centers and divide by 2 to calculate
"camshaft lobe separation" specification for Ford Racing camshafts.
NOTES:
(1) On EFI engines,
performance camshafts work only with mass air induction systems. Will not work
with Explorer EEC-V EFI.
(2) Also fits 1994-97 351W with factory
roller cam when used with mass air EFI.
(3) Stock 5.0L HO cam
advertised specs are 266°/266° duration, 0.444"/0.444" lift.
(4)
May require piston modification for piston-to-valve clearance. Valve clearance
should be checked.
(5) May require longer
pushrods.
(7) Hi-Stall torque converter recommended for automatic
trans.
(8) Emissions legal with 5-speed manual trans. E.O.
#D-225-16
(9) Great for superchargers. Manual transmission
recommended.
(10) Good torque and power up to 6200 RPM. Manual
transmission recommended.
(11) Good torque and power up to 6500
RPM. Manual transmission recommended.
(12) Requires upgraded valve
springs. For stock cylinder head applications use M-6513-A50 valve springs
installed at 1.820". For aftermarket cylinder heads M-6513-BH
recommended.
(13) Valve spring requirements: 120 lbs valve seat
pressure minimum 295 lbs open.