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COMP Cams 91-602-5

Big Mutha Thumpr Hydraulic Flat Tappet Camshaft Lift .501"/.486" Duration 295/313 RPM Range 2000-6000

COMP Cams 91-602-5

249-91-602-5

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COMP Cams 91-602-5 Big Mutha Thumpr Hydraulic Flat Tappet Camshaft Lift .501"/.486" Duration 295/313 RPM Range 2000-6000 $192.99
Big Mutha Thumpr Hydraulic Flat Tappet Camshaft
Lift .501"/.486"
Duration 295/313
RPM Range 2000-6000

COMP Cams 91-602-5 Details

Buick Nailhead 364, 401, 425, c.i. 8 CYL. 1957-1966

  • (Classic Thumpr)

  • 3 Grinds To Fit All Of Your Performance Needs
  • Unique Design
  • Maximizes Sound And Mid To High RPM Power
  • Ensures Safe Piston-To-Valve Clearance
  • Proven To Generate 25+ RWHP Gains
  • Does Not Compromise Durability
  • 1 Year Limited Warranty

  • Specifications:

    Exhaust Valve Lift (in.)
    0.475
    Intake Valve Lift (in.)
    0.490
    Int. Duration @ .050 in. (Deg)
    235
    Exh. Duration @ .050 in. (Deg)
    249
    Int. Duration Advertised (Deg)
    287
    Exh. Duration Advertised (Deg)
    305
    Lifter Type
    Hydraulic Flat Tappet
    RPM Range
    2500-6400
    Usage
    Street/Strip
    Engine Make/Size
    Buick Nailhead 264-425
    Advertised Duration
    295 int./313 exh.
    Advertised Exhaust Duration
    313
    Advertised Intake Duration
    295
    Basic Operating RPM Range
    2,500-6,400
    Cam Style
    Hydraulic flat tappet
    Computer-Controlled Compatible
    No
    Duration at 050 inch Lift
    243 int./257 exh.
    Exhaust Duration at 050 inch Lift
    257
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.486
    Grind Number
    295TH7
    Intake Duration at 050 inch Lift
    243
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.501
    Quantity
    Sold individually
    Valve Lift with Factory Rocker Arm Ratio
    0.501 int./0.486 exh.
    Valve Springs Required
    Yes
    Lobe Separation (Deg)
    107
    Manufacturer's Part Number:
    91-602-5

    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 91-602-5 fit your vehicle?

    Narrow Results

    1964 BUICK LESABRE

    • CC: 6572
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 401
    • EngineType: V8 ( 6.6 L / 401 )

    1965 BUICK WILDCAT

    • EngineType: ALL
    • SubModel: DELUXE

    1965-1966 BUICK RIVIERA

    • EngineType: ALL
    • SubModel: GRAN SPORT

    1964 BUICK LESABRE

    • CC: 6966
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1958 BUICK ROADMASTER

    • EngineType: ALL
    • SubModel: ALL

    1957-1958 BUICK CENTURY

    • EngineType: ALL
    • SubModel: ALL

    1966 BUICK WILDCAT

    • EngineType: ALL
    • SubModel: ALL

    1965 BUICK WILDCAT

    • CC: 6966
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1959-1961 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: ALL

    1962 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: BASE

    1957 BUICK ROADMASTER

    • EngineType: ALL
    • SubModel: BASE

    1958 BUICK LIMITED

    • EngineType: ALL
    • SubModel: ALL

    1966 BUICK GRAN SPORT

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 401
    • EngineType: V8 ( 6.6 L / 401 )

    1957-1958 BUICK SUPER

    • EngineType: ALL
    • SubModel: ALL

    1959 BUICK LESABRE

    • CC: 5967
    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    1960-1963 BUICK LESABRE

    • EngineType: ALL
    • SubModel: ALL

    1966 BUICK SKYLARK

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 401
    • EngineType: V8 ( 6.6 L / 401 )

    1957-1958 BUICK SPECIAL

    • CC: 5967
    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    1965 BUICK RIVIERA

    • CC: 6572
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • CUI: 401
    • EngineType: V8 ( 6.6 L / 401 )

    1965 BUICK WILDCAT

    • EngineType: ALL
    • SubModel: CUSTOM

    1963-1964 BUICK WILDCAT

    • EngineType: ALL
    • SubModel: ALL

    1965 BUICK SKYLARK

    • CC: 6572
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 401
    • EngineType: V8 ( 6.6 L / 401 )

    1965-1966 BUICK RIVIERA

    • CC: 6966
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1963-1964 BUICK RIVIERA

    • EngineType: ALL
    • SubModel: ALL

    1959-1963 BUICK INVICTA

    • EngineType: ALL
    • SubModel: ALL

    1965 BUICK GRAN SPORT

    • CC: 6572
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 401
    • EngineType: V8 ( 6.6 L / 401 )

    1965 BUICK ELECTRA

    • CC: 6966
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1966 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: ALL

    1965 BUICK WILDCAT

    • CC: 6572
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • CUI: 401
    • EngineType: V8 ( 6.6 L / 401 )

    1965 BUICK ELECTRA

    • CC: 6572
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • CUI: 401
    • EngineType: V8 ( 6.6 L / 401 )

    1963-1964 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: ALL
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