COMP Cams Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Complete Kit Lift .501"/.486" Duration 295/313 RPM Range 2500-6400
249-K51-602-5

Items You Need
Pontiac 265-455ci 8 cyl. 1955-1981
Pontiac; Super Duty; SD; SD455; HO; 455 HO; Trans-Am; Catalina; Firebird; Formula; 421; 455; 400; 428; 350; 265; 301; 370; 389; 301; 287; 317; 347; Ram Air; Ram Air IV; Ram Air III; Bonneville; Grand Prix; LeMans; Parisienne; Grand Am; Century; Regal;
Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
Specifications:
Thumpr Camshafts are the hottest cams to hit the streets in more than a decade. That's because they give you the big cam sound you're looking for, without the drawbacks. Applying a camshaft design originally created for sports car endurance racing, they incorporate early exhaust valve opening, long exhaust duration, and a generous amount of intake and exhaust overlap. Best of all, Thumprs will not negatively impact power output or streetability.
Features:![]() Thumpr Sound Clip ![]() |
Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.
Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.
Does COMP Cams K51-602-5 fit your vehicle?
1970 PONTIAC CATALINA
- Liter: 6.6
- SubModel: SAFARI
- Aspiration: NATURALLY ASPIRATED
- CUI: 400
- Engine Type: V8 ( 6.6L / 400 )
- Engine Vin: -
1972 PONTIAC GRAND PRIX
- Liter: 7.5
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 455
- Engine Type: V8 ( 7.5L / 455 )
- Engine Vin: X
1973 PONTIAC GRANDVILLE
- Liter: 7.5
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 455
- Engine Type: V8 ( 7.5L / 455 )
- Engine Vin: T
1980 BUICK CENTURY
- Liter: 4.3
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 265
- Engine Type: V8 ( 4.3L / 265 )
- Engine Vin: S
1974 PONTIAC LEMANS
- Liter: 5.7
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: A
1960 PONTIAC CATALINA
- Liter: 6.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 389
- Engine Type: V8 ( 6.4L / 389 )
- Engine Vin: -
1972 PONTIAC CATALINA
- Liter: 6.6
- SubModel: BROUGHAM
- Aspiration: NATURALLY ASPIRATED
- CUI: 400
- Engine Type: V8 ( 6.6L / 400 )
- Engine Vin: S
1967 PONTIAC FIREBIRD
- Liter: 5.3
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 326
- Engine Type: V8 ( 5.3L / 326 )
- Engine Vin: -
1967 PONTIAC FIREBIRD
- Liter: 5.3
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 326
- Engine Type: V8 ( 5.3L / 326 )
- Engine Vin: -
1966 PONTIAC LEMANS
- Liter: 5.3
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 326
- Engine Type: V8 ( 5.3L / 326 )
- Engine Vin: -
1962 PONTIAC BONNEVILLE
- Liter: 6.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 389
- Engine Type: V8 ( 6.4L / 389 )
- Engine Vin: -
1964 PONTIAC GRAND PRIX
- Liter: 6.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- CUI: 389
- Engine Type: V8 ( 6.4L / 389 )
- Engine Vin: -
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
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Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.