800.345.4545
Call Our Support Line
24 Hours / 7 Days a Week!  
FREE SHIPPING!
Same Day Shipping Before 11 PM ET
0
My Cart
0
$0.00
Shop By Vehicle
Shop By
Category
Close Menu
Shop By Vehicle
Top Categories
All Categories

All Categories


Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates
Rebates
Help

COMP Cams 51-602-5

Big Mutha Thumpr Hydraulic Flat Tappet Camshaft Lift .501"/.486" Duration 295/313 RPM Range 2500-6400

COMP Cams 51-602-5

249-51-602-5

jegs shipping
FREE Shipping
Ships from Manufacturer
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
COMP Cams 51-602-5 Big Mutha Thumpr Hydraulic Flat Tappet Camshaft Lift .501"/.486" Duration 295/313 RPM Range 2500-6400 $179.99
Big Mutha Thumpr Hydraulic Flat Tappet Camshaft
Lift .501"/.486"
Duration 295/313
RPM Range 2500-6400

COMP Cams 51-602-5 Details

Pontiac 265-455ci 8 cyl. 1955-1981

Street/Strip, need 9:1 compression 2800 + stall, intake, gears, and headers, very rough idle

Specifications:

Exhaust Valve Lift (in.)
0.486
Intake Valve Lift (in.)
0.501
Int. Duration @ .050 in. (Deg)
243
Exh. Duration @ .050 in. (Deg)
257
Int. Duration Advertised (Deg)
295
Exh. Duration Advertised (Deg)
313
Lifter Type
Hydraulic Flat Tappet
Engine Make/Size
Pontiac 265-455
RPM Range
2500-6400
Usage
Street/Strip
Manufacturer's Part Number:
51-602-5

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:
  • Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods
  • Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
  • Best with aftermarket converters and more rear gear


    Thumpr Sound ClipClick to Listen

    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 51-602-5 fit your vehicle?

    Narrow Results

    1977-1979 PONTIAC FIREBIRD

    • Liter: 6.6
    • SubModel: FORMULA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974 PONTIAC LEMANS

    • CC: 6555
    • Liter: 6.6
    • SubModel: SPORT
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1965 PONTIAC TEMPEST

    • CC: 5343
    • Liter: 5.3
    • Aspiration: N
    • SubModel: SAFARI
    • CUI: 326
    • EngineType: V8 ( 5.3 L / 326 )

    1964 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1977 PONTIAC BONNEVILLE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1957 PONTIAC BONNEVILLE

    • CC: 5687
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 347
    • EngineType: V8 ( 5.7 L / 347 )

    1963-1966 PONTIAC STAR CHIEF

    • EngineType: ALL
    • SubModel: ALL

    1960 PONTIAC VENTURA

    • EngineType: ALL
    • SubModel: ALL

    1963 PONTIAC CATALINA

    • CC: 6900
    • Liter: 6.9
    • Aspiration: N
    • SubModel: BASE
    • CUI: 421
    • EngineType: V8 ( 6.9 L / 421 )

    1973 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC LEMANS

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 PONTIAC CATALINA

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970 PONTIAC EXECUTIVE

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1957 PONTIAC SUPER CHIEF

    • CC: 5687
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 347
    • EngineType: V8 ( 5.7 L / 347 )

    1970-1971 PONTIAC FIREBIRD

    • CC: 6555
    • Liter: 6.6
    • SubModel: FORMULA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 PONTIAC GRAND SAFARI

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1973-1974 PONTIAC FIREBIRD

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: TRANS AM
    • Engine Vin: Y
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970-1971 PONTIAC GTO

    • EngineType: ALL
    • SubModel: THE JUDGE

    1974 PONTIAC FIREBIRD

    • CC: 6555
    • Liter: 6.6
    • SubModel: TRANS AM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972-1973 PONTIAC FIREBIRD

    • CC: 5733
    • Liter: 5.7
    • SubModel: TRANS AM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 PONTIAC GRAND AM

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1962 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1958 PONTIAC STAR CHIEF

    • EngineType: ALL
    • SubModel: SUPER DELUXE

    1975 PONTIAC BONNEVILLE

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977-1980 PONTIAC BONNEVILLE

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1962 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1969 PONTIAC TEMPEST

    • CC: 5733
    • Liter: 5.7
    • Aspiration: N
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 BUICK SKYLARK

    • Liter: 4.9
    • SubModel: S
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1974 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 PONTIAC GRAND LEMANS

    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1962 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1973 PONTIAC LEMANS

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1962 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1963 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1963 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1963 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1977 PONTIAC LEMANS

    • Liter: 4.9
    • SubModel: SPORT
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1978-1980 PONTIAC GRAND AM

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1976 PONTIAC LEMANS

    • Liter: 7.5
    • SubModel: SPORT
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1967-1968 PONTIAC GRAND PRIX

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971 PONTIAC CATALINA

    • CC: 6555
    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1964 PONTIAC CATALINA

    • CC: 6900
    • Liter: 6.9
    • Aspiration: N
    • SubModel: SAFARI
    • CUI: 421
    • EngineType: V8 ( 6.9 L / 421 )

    1969 PONTIAC FIREBIRD

    • EngineType: ALL
    • SubModel: TRANS AM

    1971 PONTIAC CATALINA

    • CC: 5733
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 BUICK ESTATE WAGON

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1972-1973 PONTIAC FIREBIRD

    • CC: 6555
    • Liter: 6.6
    • Aspiration: N
    • SubModel: TRANS AM
    • Engine Vin: T
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1963 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1973-1974 PONTIAC FIREBIRD

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: FORMULA
    • Engine Vin: Y
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970-1972 PONTIAC BONNEVILLE

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1964 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1973-1974 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • SubModel: SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 PONTIAC GRAND SAFARI

    • CC: 7457
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1979-1981 PONTIAC FIREBIRD

    • Liter: 4.9
    • SubModel: TRANS AM
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1962 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1975 PONTIAC LEMANS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC VENTURA

    • CC: 5733
    • Liter: 5.7
    • Aspiration: N
    • SubModel: GTO
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1962-1963 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1974 PONTIAC LEMANS

    • CC: 6556
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: P
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972 PONTIAC GRAND SAFARI

    • CC: 7457
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1979 BUICK CENTURY

    • Liter: 4.9
    • SubModel: SPECIAL
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1962 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1963 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1960-1969 PONTIAC BONNEVILLE

    • EngineType: ALL
    • SubModel: ALL

    1977-1978 PONTIAC CATALINA

    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970-1972 PONTIAC GRAND PRIX

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1964 PONTIAC CATALINA

    • CC: 6900
    • Liter: 6.9
    • Aspiration: N
    • SubModel: BASE
    • CUI: 421
    • EngineType: V8 ( 6.9 L / 421 )

    1974 PONTIAC GRAND AM

    • CC: 6556
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970-1971 PONTIAC FIREBIRD

    • CC: 5733
    • Liter: 5.7
    • SubModel: ESPRIT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1963-1967 PONTIAC LEMANS

    • CC: 5343
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 326
    • EngineType: V8 ( 5.3 L / 326 )

    1977-1978 BUICK LESABRE

    • Liter: 4.9
    • SubModel: CUSTOM
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1957 PONTIAC CATALINA

    • CC: 5687
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 347
    • EngineType: V8 ( 5.7 L / 347 )

    1972-1974 PONTIAC FIREBIRD

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: FORMULA
    • Engine Vin: X
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1962 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1965 PONTIAC TEMPEST

    • CC: 5343
    • Liter: 5.3
    • Aspiration: N
    • SubModel: SAFARI
    • CUI: 326
    • EngineType: V8 ( 5.3 L / 326 )

    1971 PONTIAC FIREBIRD

    • CC: 7456
    • Liter: 7.5
    • SubModel: ESPRIT
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1976-1977 PONTIAC LEMANS

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974 PONTIAC VENTURA

    • CC: 5737
    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC GRANDVILLE

    • CC: 7457
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1981 PONTIAC LEMANS

    • Liter: 4.9
    • SubModel: SAFARI
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1972-1973 PONTIAC FIREBIRD

    • CC: 6555
    • Liter: 6.6
    • Aspiration: N
    • SubModel: FORMULA
    • Engine Vin: T
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976 PONTIAC GRAND PRIX

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1973-1974 PONTIAC LEMANS

    • CC: 6555
    • Liter: 6.6
    • Aspiration: N
    • SubModel: SAFARI
    • Engine Vin: P
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973 PONTIAC LEMANS

    • CC: 7457
    • Liter: 7.5
    • SubModel: SAFARI
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1977 PONTIAC LEMANS

    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 BUICK LESABRE

    • Liter: 4.9
    • SubModel: CUSTOM SPORT
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1971 PONTIAC CATALINA

    • CC: 7456
    • Liter: 7.5
    • SubModel: SAFARI
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1974 PONTIAC CATALINA

    • CC: 6556
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: P
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972 PONTIAC LEMANS

    • CC: 6556
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 PONTIAC FIREBIRD

    • Liter: 4.9
    • SubModel: FORMULA
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1974 PONTIAC GRAND AM

    • CC: 6556
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: P
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968-1970 PONTIAC EXECUTIVE

    • CC: 6555
    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974 PONTIAC BONNEVILLE

    • CC: 7457
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1964-1965 PONTIAC TEMPEST

    • CC: 5343
    • Liter: 5.3
    • SubModel: CUSTOM
    • CUI: 326
    • EngineType: V8 ( 5.3 L / 326 )

    1962 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1977-1980 PONTIAC CATALINA

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1967 PONTIAC EXECUTIVE

    • EngineType: ALL
    • SubModel: ALL

    1974 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978 PONTIAC CATALINA

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1964 PONTIAC CATALINA

    • CC: 6376
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )
    Items You Need

    Before you leave us... Receive a free catalog or join our email list

    Sign up to receive our catalog or subscribe to our email list now to see our exclusive email only specials, new products, and offers!

    Request CatalogJoin Email List