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Thread: SOILID FLAT TAPPET STANDARD CAM OR 4-7 SWAP SOLID CAM

  1. #1

    SOILID FLAT TAPPET STANDARD CAM OR 4-7 SWAP SOLID CAM

    both being basically equal except price what are the advantages of either i know the harmonic difference in the swap cam but like everyone else i had a lobe go down on my standard cam so am buying new also has anyone used the new style solid lifter with the hole in the bottom instead of sides howards cam says it will pick up about 20 ft pound of tourqe with the swap cam over standard comp says not a noticable difference for the price thanks

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    Sep 2007
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    4,143
    There has been lots of discussion on SPEEDTALK about it. If you go there and do a search there is lots of info as to the "WHY"

    Here is a HOT ROD article with a back to back test of a standard cam vs 4/7 swap.

    http://www.hotrod.com/techfaq/113_07...ams/index.html

  3. #3
    Senior Member RACING JUNKIE oldandtired's Avatar
    Join Date
    Dec 2008
    Location
    Sugar Hill, GA
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    1,368
    The day's of regular solid lifters are over.

    1.Buy the drilled lifter. When the lifter comes off the closing ramp and hits the "lash" portion, you get a shot of oil directly on the lobe.
    or
    2. Groove the lifter bore, top on drivers side, bottom on passingers side. This causes a direct shot of oil on the contact area between the lifter and lobe.
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triumph of evil is for good men to do nothing" Edmund Burke

  4. #4
    still havent decided but thanks todd


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