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COMP Cams CL12-602-4 Big Mutha' Thumpr Hydraulic Flat Tappet Cam and Lifter Kit for Chevy Small Block Engines [Duration 243/257 @ .050]

249-CL12-602-4


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CL12-602-4 Big Mutha' Thumpr Hydraulic Flat Tappet Cam and Lifter Kit for Chevy Small Block Engines [Duration 243/257 @ .050]
$365.95
More than 10 available
Big Mutha' Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit
  • 1958-1998 Chevy Small Block Engines 262-400 ci.
  • Lift: .500 in./.486 in.
  • Duration @ .050 in: 243/257
  • RPM Range: 2500-6400
  • Lobe Separation: 107
  • Usage: Street/Strip
  • Free Shipping - Ships
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    CL12-602-4 - Comp Cams Thumpr Hydraulic Flat Tappet Cams is rated 4.7 out of 5 by 10.
    Rated 5 out of 5 by from thump cam I finally installed cam and started engine. Runs and sounds great, got another 350 to build will put in another one.
    Date published: 2024-03-25
    Rated 5 out of 5 by from -BIG THUMPR- CL12-602-4 GREAT SOUND AND THE BEST ALL AROUND FROM BOTTOM END TO TOP END PERFORMANCE IVE FOUND FOR MY SET UP.. I HAD TO ADD A ELECTRIC VACUUM PUMP, BUT ALL APPLICATIONS MAY NOT NEED ONE. 5 STARS IN MY BOOK ⭐️⭐️⭐️⭐️⭐️
    Date published: 2022-10-30
    Rated 5 out of 5 by from Wow!!!!!!! Can't believe my little 355 runs and sounds like this.
    Date published: 2021-12-15
    Rated 5 out of 5 by from Love it I absolutely love this cam. I'm running it in a 383 stroker an im amazed with it. Definitely will buy another one..... Thanks Comp
    Date published: 2020-08-10
    Rated 2 out of 5 by from thump cam I haven't installed it yet. shipping box was crushed and cam had fallen out of shipping box. lifters had shifted inside box, and there was no assembly lube with the cam.
    Date published: 2023-07-09
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    Do I need a different distributor gear for this cam

    Asked by: Casey
    COMP Cams CL12-602-4 will work with a stock distributor gear.
    Answered by: Seth
    Date published: 2025-04-24

    What valve springs are recommended for this camshaft?

    Asked by: Stills
    The Comp 249-CL12-602-4 cam uses Comp 249-26987-16 springs
    Answered by: jshook
    Date published: 2025-04-10

    Would this camshaft work for a 1986 Chevrolet Corvette with the L98 Tune Port Injection?

    Asked by: Anonymous
    COMP Cams CL12-602-4 will not fit a '86 Corvette. It will not work with the stock computer.
    Answered by: jshook
    Date published: 2025-03-04

    Hi, I haven’t heard this cam and new lifters. My question is how much laddifionsl lift would a 1.6 rocker make? I am happy with the cam but just want more lift and lopey idle

    Asked by: Ryguy
    The Comp 249-CL12-602-4 cam will be .553/.478 lift with 1.6 rockers.
    Answered by: jshook
    Date published: 2025-01-16

    Will this fit a 1998 chevy k1500 305 5.0L?

    Asked by: Swendy
    COMP Cams CL12-602-4 will not fit a 98 Chevy K1500 305. It will not work with the stock computer.
    Answered by: Seth
    Date published: 2024-11-26

    Does this have a lobe for the fuel pump ? 

    Asked by: Chevy 350
    Yes, COMP Cams CL12-602-4 Has a mechanical fuel pump lobe.
    Answered by: Seth
    Date published: 2024-11-14

    What distributor does this cam require

    Asked by: Wuff
    The Comp 249-CL12-602-4 cam uses a standard Chevy distributor.
    Answered by: jshook
    Date published: 2024-10-08

    What class/stage is this cam And will this a 5.7 350 Chevy c1500

    Asked by: Isaacp
    The Comp 249-CL12-602-4 cam kit does not have a 'stage' name associated with it.
    Answered by: jshook
    Date published: 2024-08-27
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