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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-34-243-5
'Xtreme 4x4' Hydraulic Flat Tappet Camshaft
$32595
Ships on 09/08/2026
Lowest Price GuaranteeFord 429, 460 c.i. 8 CYL. 1968-1994
- Xtreme 4x4 X4278H Hydraulic Flat Tappet Camshaft
Lift .574"/.580"
Duration 278°/288°
Lobe Separation Angle: 111°
RPM Range 2000-6200
Good top end power, Needs intake, headers and gears. 9.5 compression with 2500 stall.
| Operating Range: | 2000-6200 RPM |
| Duration Advertised: | 278° Intake / 288° Exhaust |
| Duration @ .050' Lift: | 234° Intake / 244° Exhaust |
| Valve Lift w/1.7 Rockers: | .574' Intake / .580' Exhaust |
| Lobe Separation Angle: | 111° |
Ford; 429; 460; BBF; Big Block Ford; 385; Cobra Jet; 429 Cobra Jet; Interceptor; Lima; F100; F150; F250; Super Duty; E150; E250
Good top end power, needs intake, headers and gears. 9.5:1 compression with 2500+ stall.
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
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Part TypeCamshaft
BrandCOMP CAMS
Package Height2.9
Package Width2.9
Package Length24.4
Weight11.6 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)244
Cam StyleHydraulic flat tappet
Grind NumberFF X4 278H-11
Exh. Duration Advertised (Deg)288
Engine Make/SizeFord 429-460
Intake Valve Lift With Factory Rocker Arm Ratio (I0.574
Int. Duration @ .050 In. (Deg)234
Basic Operating Rpm Range2,000-6,200
Intake Valve Lift0.564 in (14.326 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)278
Lobe Separation (Deg)111
Rpm Range2000-6200
Advertised Duration278 int./288 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.58
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.574 int./0.580 exh.
QuantitySold individually
Exhaust Valve Lift0.57 in (14.478 mm)
Advertised Intake Duration278
Intake Duration At 050 Inch Lift234
Exhaust Duration At 050 Inch Lift244
Advertised Exhaust Duration288
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift234 int./244 exh.
Valve Springs RequiredYes
Vendor Part Number34-243-5
Package Qty1
Package TypeEA
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