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Thread: Roller Cam Question
          
   
   

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  1. 06-05-2007 07:14 PM #1
    jimmyjeep
    jimmyjeep is offline CHR Member
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    Roller Cam Question

     



    I have noticed that rollers seem to all carry larger numbers, dur. & lift, that flat taps. If in my instance I have picked CompCam 280H flat tap, what would an equivilent set of numbers for a roller cam be? Thanks.
    "oohh...thats gonna leave a mark!"

    1997 s-10, 357 C.I., 350 turbo, speedpro 11:1,Comp Cam custom grind mech. roller, Canfield heads, 1.6 roller rockers, edelbrock tm-1, holley 750sp, Hooker Headers, MSD, 3K B&M stall, 4:11 gears
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  3. 06-05-2007 07:27 PM #2
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    erik erikson
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    Quote Originally Posted by jimmyjeep
    I have noticed that rollers seem to all carry larger numbers, dur. & lift, that flat taps. If in my instance I have picked CompCam 280H flat tap, what would an equivilent set of numbers for a roller cam be? Thanks.
    286HR has the same duration at .050.
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  4. 06-05-2007 07:44 PM #3
    jimmyjeep
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    thanks eric
    "oohh...thats gonna leave a mark!"

    1997 s-10, 357 C.I., 350 turbo, speedpro 11:1,Comp Cam custom grind mech. roller, Canfield heads, 1.6 roller rockers, edelbrock tm-1, holley 750sp, Hooker Headers, MSD, 3K B&M stall, 4:11 gears
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  5. 06-05-2007 07:46 PM #4
    jimmyjeep
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    Is there really an increase in freed up horsepwer using the 286HR vs. the 280H? This is due to efficiency and less friction more or less???
    "oohh...thats gonna leave a mark!"

    1997 s-10, 357 C.I., 350 turbo, speedpro 11:1,Comp Cam custom grind mech. roller, Canfield heads, 1.6 roller rockers, edelbrock tm-1, holley 750sp, Hooker Headers, MSD, 3K B&M stall, 4:11 gears
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  6. 06-06-2007 11:57 AM #5
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    The roller cam cam use a much more agressive lobe design and get the valves opened quicker and closed quicker for more area under curve. Trying to do the same lobe with a flat tappet might have the lifter edge digging into the cam lobe.
    PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.
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