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ENGINE COMPONENTS FORD RACING CAMSHAFTS The Ford Racing Camshaft Specification chart describes individual cams currently available from Ford Racing. Refer to page XX for performance characteristics and usage guidelines. See page 119 for valve springs. SMALL BLOCK V8 HYDRAULIC ROLLER TAPPET CAMSHAFTS INTAKE EVENTS EXHAUST EVENTS DURATION LIFT (0.050") (0.050") (SAE) (INCHES) L OBE CENTER ROCKER PART NUMBER ENGINE RATIO OPEN CLOSE OPEN CLOSE INT. EXH. LOBE VALVE INT. EXH. M-6250-B303 1985 and 1.60 5° BTC 39° ABC 49° BBC 5° BTC 284° 284° .300 I .480 I 107° 117° a140 a141 a142a145 Later 302 224° 224° .300 E .480 E Roller Cam M-6250-E303 1985 and 1.60 0° BTC 40° ABC 40° BBC 0° BTC 282° 282° .311 I .498 I 110° 110° a140 a141 a142a145 a146 Later 302 220° 220° .311 E .498 E Roller Cam M-6250-F303 1985 and 1.60 4° BTC 42° ABC 52° BBC 6° BTC 288° 288° .320 I .512 I 109° 119° a140 a141 a142 a143a145 a147 Later 302 226° 226° .320 E .512 E Roller Cam M-6250-X303 1985 and 1.60 5° BTC 39° ABC 49° BBC 5° BTC 286° 286° .339 I .542 I 107° 117° a140 a141 a142 a143a145 a148 Later 302 224° 224° .339 E .542 E Roller Cam M-6250-Z303 1985 and 1.60 7° BTC 41° ABC 51° BBC 3° ATC 290° 290° .345 I .552 I 107° 117° a140 a141 a142 a143 a144a145 a149 Later 302 228° 228° .345 E .552 E Roller Cam NOTE: NOTES: Camshaft intake and exhaust valve events are measured at 0.050" a140 On EFI engines, performance camshafts work only with mass air induction tappet lift. The duration figures in the shaded area are taken at systems. Will not work with Explorer EEC-V EFI. 0.050" tappet lift. This is useful to check the cam with a degree a141 Also fits 1994-1997 351W with factory roller cam when used with mass wheel during installation. The solid color is advertised duration. For air EFI. comparison purposes, add intake and exhaust lobe centers and a142 Stock 5.0L HO cam advertised specs are 266°/266° duration, divide by 2 to calculate “camshaft lobe separation” specification for 0.444"/0.444" lift. Ford Racing camshafts. a143 May require piston modification for piston-to-valve clearance. Valve clearance should be checked. a144 May require longer push rods. a145 High-stall torque converter recommended for automatic transmission. a146 Emissions legal with 5-speed manual trans. E.O. #D-225-16. a147 Great for superchargers. Manual transmission recommended. a148 Good torque and power up to 6200 rpm. Manual transmission recommended. a149 Good torque and power up to 6500 rpm. Manual transmission recommended. 2005-2010 MUSTANG GT HIGH LIFT HOT ROD CAM SET M-6550-3V • Give any 3-valve 4.6L or 5.4L a “lopey” idle reminiscent of • Works well with Ford Racing’s M-6049-N3VPA high- 1960s muscle cars! performance CNC-ported 3V cylinder heads, M-9926-3V • Engineered for naturally aspirated and supercharged 62 mm throttle body and 4.6L high flow intake M-9424-463V applications • Approximately 50 hp gain with the stock intake manifold and • Excellent upgrade for the 2005-2010 Mustang GT 4.6L M-6049-N3VPA / M-6050-N3VPA CNC heads at 6500 rpm 3V engine • Custom Calibration required! Calibration not included! • Increases lift from the stock 11 mm/0.433" to 12 mm/0.472" Recommended WOT cam • Intake / exhaust duration of 221 / 240 degrees (@ 0.050" timing values included lift), lobe separation of 110 degrees in instructions • Compatible with production valve springs, followers and lash adjusters up to 6800 rpm • Must be used with long tube headers to achieve a significant power gain • 4.6L high flow intake M-9424-463V and throttle body M-9926-3V recommended For important information about the proper usage of performance parts, please see page 14. See pages 286-292 for important safety, emissions and warranty information. www.fordracingparts.com 115


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