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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-33-601-5
Mutha Thumpr Hydraulic Flat Tappet Camshaft Lift .519"/.509" Duration 286/304 RPM Range 2200-6100
$32595
Ships on 10/23/2026
Lowest Price GuaranteeFord 352-428 c.i. 8 CYL. 1963-1976
- Mutha Thumpr Hydraulic Flat Tappet Camshaft
Lift .519"/.509"
Duration 286/304
RPM Range 2200-6100
Mutha' Thumpr: High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
Ford, FE, 352, 428, Super Cobra Jet, SCJ, Cobra Jet, Mustang, Mach 1, Shelby, 332, 361, 390, 406, 410, 427, 428, Truck, F100, F150, Ford Truck
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
BrandCOMP CAMS
Package Height2.7
Package Width2.8
Package Length24.4
Weight11.1 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)249
Cam StyleHydraulic flat tappet
Grind Number287TH7
Exh. Duration Advertised (Deg)304
Engine Make/SizeFord 352-428
Intake Valve Lift With Factory Rocker Arm Ratio (I0.519
Int. Duration @ .050 In. (Deg)234
Basic Operating Rpm Range2,200-6,100
Intake Valve Lift0.519 in (13.183 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)286
Lobe Separation (Deg)107
Rpm Range2200-6100
Advertised Duration286 int./304 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.503
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.519 int./0.503 exh.
QuantitySold individually
Exhaust Valve Lift0.503 in (12.776 mm)
Advertised Intake Duration286
Intake Duration At 050 Inch Lift234
Exhaust Duration At 050 Inch Lift249
Advertised Exhaust Duration304
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift234 int./249 exh.
Valve Springs RequiredYes
Vendor Part Number33-601-5
Package Qty1
Package TypeEA
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