Big Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft & Lifter Kit Lift: .533"/.519"

Name: Big Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft & Lifter Kit Lift: .533"/.519"
Brand: COMP CAMS
SKU: 249-CL20-603-9
Price: 1250.95 USD
Availability: InStock

^$1,250⁹⁵

Ships on Oct 28, 2026

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Chrysler 273-360 ci. 8 Cyl. 1964-2003 Non-Factory Roller Block

Big Mutha Thumpr

Lift: .533"/.519"
Duration: 299°/319°
Lobe Separation Angle: 107°
RPM Range: 2500-6200

Valve Setting: Intake - Hyd, Exhaust - Hyd
RPM Operating Range: 2500 to 6200
Cam Grind Number: 299THR7
Duration Advertised: Intake - 299, Exhaust - 319
Duration @ .050': Intake - 243, Exhaust - 257
Valve Lift: Intake - .531, Exhaust - .517
Lobe Sep. Angle: 107°
Chrysler; Dodge; Plymouth; 273; 318; 340; 360; Magnum; LA; Barracuda; 5.2; 5.9; Challenger; Charger; Charger 500; Li' Red Express; Ram; Ramcharger; Cuda; MOPAR

Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very 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
Weight15.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)257
Cam StyleHydraulic roller tappet
Grind Number299THR7
Exh. Duration Advertised (Deg)319
Locks IncludedNo
Engine Make/SizeMopar 273-360
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.533
Int. Duration @ .050 In. (Deg)243
Assembly Lubricant IncludedNo
Basic Operating Rpm Range2,500-6,200
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.533 in (13.538 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)299
Lobe Separation (Deg)107
Rpm Range2500-6200
Lifter StyleHydraulic roller
Advertised Duration299 int./319 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.519
Valve Springs IncludedNo
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.533 int./0.519 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.519 in (13.183 mm)
Advertised Intake Duration299
Intake Duration At 050 Inch Lift243
Exhaust Duration At 050 Inch Lift257
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration319
Lifter TypeHydraulic Roller Retrofit
Duration At 050 Inch Lift243 int./257 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL20-603-9
Package Qty1
Package TypeEA

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