Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Product Discontinued
COMP CAMSPART NUMBER: 249-K42-601-9
Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift: .540"/.526"
Currently Unavailable
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
Oldsmobile 260-455 c.i. 8 cyl. 1967-1990Mutha Thumpr
- Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft Complete Kit
- Lift: .540"/.526"
- Duration: 291°/311°
- Lobe Separation Angle: 107°
- RPM Range: 2000-5800
- Complete Camshaft 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
Olds; Oldsmobile; Cutlass; Cutlass Supreme; 98; Calais; Ciera; Custom Cruiser; Starfire; Firenza; 88; Rocket; Rocket 88; Vista Cruiser; Delta 88; 260; 442; 307; 350; 403; 400; 425; 455
Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height5.0
Package Width10.5
Package Length26.0
Weight28.0 PG
Part CategoryPerformance Parts
UsageStreet/Strip
Intake Valve Lift0.54 in (13.716 mm)
Int. Duration Advertised (Deg)291
Exh. Duration @ .050 In. (Deg)249
Rpm Range2000-5800
Lifter TypeHydraulic Roller Retrofit
Exh. Duration Advertised (Deg)311
Part FitmentSemi Universal
Engine Make/SizeOlds 260-455
Int. Duration @ .050 In. (Deg)235
Exhaust Valve Lift0.532 in (13.513 mm)
Vendor Part NumberK42-601-9
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.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)
![Break-In/Engine Oil Supplement [12 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28060.jpg)
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)
JEGS
Part Number : 555-80599
$4779$51.99
You Save$4.20
Some parts are not legal for use in California or other states with similar laws / regulations
