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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-CL32-601-8
Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft & Lifter Kit Lift: .567"/.551"
$86795
Ships on 09/15/2026
Lowest Price GuaranteeFord 351C, 351M-400M 8 cyl. 1970-1983 Non-Factory Roller BlockMutha Thumpr
- Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft & Lifter Kit
- Lift: .567"/.551"
- Duration: 291°/311°
- Lobe Separation Angle: 107°
- RPM Range: 2200-5900
- RPM Range: 2200-5900
Note: Requires 249-31-1000 install kit.Ford, 351, 351 Cleveland, 400, 351 Modified, 400 Modified, Ford F100, Mach 1, Mustang
High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
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 Kit
BrandCOMP CAMS
Package Height3.0
Package Width5.5
Package Length26.0
Weight18.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)249
Cam StyleHydraulic roller tappet
Grind Number291THR7
Exh. Duration Advertised (Deg)311
Locks IncludedNo
Engine Make/SizeFord 351M-400
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.567
Int. Duration @ .050 In. (Deg)235
Assembly Lubricant IncludedNo
Basic Operating Rpm Range2,200-5,900
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.567 in (14.402 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)291
Lobe Separation (Deg)107
Rpm Range2200-5900
Lifter StyleHydraulic flat tappet
Advertised Duration291 int./311 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.551
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.567 int./0.551 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.551 in (13.995 mm)
Advertised Intake Duration291
Intake Duration At 050 Inch Lift235
Exhaust Duration At 050 Inch Lift249
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration311
Lifter TypeHydraulic Roller Retrofit
Part FitmentSemi Universal
Duration At 050 Inch Lift235 int./249 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL32-601-8
Package Qty1
Package TypeEA
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