Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Product Discontinued
COMP CAMSPART NUMBER: 249-CL31-602-8
Big Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft & Lifter Kit Lift: .552"/.537"
Currently Unavailable
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
Ford 221-302ci 1963-1995 Non-Factory Roller BlockBig Mutha Thumpr
Big Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft & Lifter KitLift: .552"/.537" Duration: 299°/319° Lobe Separation Angle: 107° RPM Range: 2500-6200
Notes:
- Requires 9.5:1 compression, 2800+ stall, intake, gears, and headers
- Very rough idle
Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height3.1
Package Width5.6
Package Length25.4
Weight13.35 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/SizeFord 221-302
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.552
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 Lift0.552 in (14.021 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 (0.537
Valve Springs IncludedNo
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.552 int./0.537 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.537 in (13.64 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
Part FitmentSemi Universal
Duration At 050 Inch Lift243 int./257 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL31-602-8
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Precision Cam Degree Wheel Kit [11 in.]](https://www.jegs.com/images/mini_200/500/555/555-81621.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)
![Break-In/Engine Oil Supplement [12 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28060.jpg)
JEGS
Universal Camshaft Installation/Removal Tool Includes 4 camshaft adapters
Part Number : 555-80599
$4779$51.99
You Save$4.20
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)
Some parts are not legal for use in California or other states with similar laws / regulations
