Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededCOMP CAMSPART NUMBER: 249-CL12-600-4
Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit Lift .479"/.465" Duration 279/297 RPM Range 2000 to 5800
$39795
Ships on 09/28/2026
Lowest Price GuaranteeChevy 262-400ci Small Block 1958-98
- Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit
- Best with 2000+ Converter & Gears. Choppy/Thumping Idle
- Camshaft And Lifter Kit
- 3 Grinds To Fit All Of Your Performance Needs
- Long Exhaust Duration
- Produces A Powerful Hard-Hitting Exhaust Note
- Excellent Horsepower Gains And Broad Torque Curve
- Delivers Real Seat Of The Pants Performance
- Designed For Use w/Latest In ValveTrain Components
- 1 Year Limited Warranty
265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10
High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.
Lift .479"/.465"
Duration 279/297
RPM Range 2000 to 5800
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 Width5.6
Package Length25.3
Weight13.3 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)241
Cam StyleHydraulic flat tappet
Grind Number279TH7
Exh. Duration Advertised (Deg)297
Locks IncludedNo
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.479
Int. Duration @ .050 In. (Deg)227
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,000-5,800
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.479 in (12.167 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)279
Lobe Separation (Deg)107
Rpm Range2000-5800
Lifter StyleHydraulic flat tappet
Advertised Duration279 int./297 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.465
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.479 int./0.465 exh.
Camshaft Gear Attachment3-bolt
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.465 in (11.811 mm)
Advertised Intake Duration279
Intake Duration At 050 Inch Lift227
Exhaust Duration At 050 Inch Lift241
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration297
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift227 int./241 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL12-600-4
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)
![Break-In/Engine Oil Supplement [12 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28060.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)
JEGS
Universal Camshaft Installation/Removal Tool Includes 4 camshaft adapters
Part Number : 555-80599
$4779$51.99
You Save$4.20
![Precision Cam Degree Wheel Kit [11 in.]](https://www.jegs.com/images/mini_200/500/555/555-81621.jpg)
ITEM YOU MAY ALSO CONSIDER
HOWARDS CAMS
Hydraulic Flat Tappet Rattler Camshaft & Lifter Kit 1955-1998 Chevy 262-400
Part Number : 466-CL118001-09
$34499
HOWARDS CAMS
Hydraulic Flat Tappet Rattler Camshaft 1955-1998 Chevy 262-400
Part Number : 466-118001-09
$22699
HOWARDS CAMS
Part Number : 466-CL118001-09
$34499
HOWARDS CAMS
Part Number : 466-118001-09
$22699
Some parts are not legal for use in California or other states with similar laws / regulations
