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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-41-602-7
Thumpr Mechanical Flat Tappet Camshaft Ford 239-255ci Flathead 1949-53 Lift: .382"/.378"
$68995
Ships on 09/15/2026
Lowest Price GuaranteeFord 239-255ci Flathead 1949-53 (Classic Thumpr)
- Thumpr Mechanical Flat Tappet Camshaft
- Lift: .382"/.378"
- Duration: 283°/315°
- Lobe Separation Angle: 107°
- RPM Range: 2500-6400
- Street/strip
- Needs 9.5:1 compression, 2800+ stall, intake, gears, and headers
- Very rough idle
Flathead; Ford 239; Ford 255
Street/strip, engine modification mandatory, aftermarket heads, very rough idle.
Ford 239-255ci Flathead 1949-53
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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeCamshaft
BrandCOMP CAMS
Package Height2.75
Package Width3.0
Package Length24.5
Weight9.91 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)241
Cam StyleMechanical flat tappet
Grind Number283TS7
Exh. Duration Advertised (Deg)315
Engine Make/SizeFord Flat Head 239-255
Intake Valve Lift With Factory Rocker Arm Ratio (I0.382
Int. Duration @ .050 In. (Deg)227
Basic Operating Rpm Range2,500-6,400
Intake Valve Lash0.012 in (0.305 mm)
Intake Valve Lift0.382 in (9.703 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)283
Lobe Separation (Deg)107
Rpm Range2500-6400
Advertised Duration283 int./315 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.378
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.382 int./0.378 exh.
QuantitySold individually
Exhaust Valve Lash0.014 in (0.356 mm)
Exhaust Valve Lift0.378 in (9.601 mm)
Advertised Intake Duration283
Intake Duration At 050 Inch Lift243
Exhaust Duration At 050 Inch Lift257
Advertised Exhaust Duration315
Lifter TypeMechanical Flat Tappet
Duration At 050 Inch Lift243 int./257 exh.
Valve Springs RequiredYes
Vendor Part Number41-602-7
Package Qty1
Package TypeEA
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