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Thread: cam ???

  1. #1
    Member MASTER JOURNEYMAN
    Join Date
    Nov 2003
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    43

    cam ???

    I have a cam #'s on it are 321-4/336-5 r113 also has e r ingraved and 2002 A and x1190 can anyone help me identify this cam? I want to get the lobe center # and find out the valve lash. It is a soild roller cam out of a 638 bbc. Any way of finding out who made it so I can get a grind card???? Thanx

  2. #2
    Senior Member EXPERT BUILDER
    Join Date
    Jan 2005
    Posts
    336
    ONLY THING I CAN PASS ALONG IS THAT MY COMP CAMS 4/7 SWAP BBC ROLLER CAM IS 321/336 DEGREES TOTAL DURATION,IM WONDERING IF THOSE NUMBERS ARE TOTAL DEGREES OF DURATION ON A 113 LOBE SEP.MINE IS 112 DEGREE.GOOD LUCK.OH BY THE WAY MY .050 NUMBERS ARE 286/296...MY CAM IS A COMMON GRIND IN THEIR MASTER CATALOG.

    CAM KING OR UDHAROLD CAN U GUYS CHIME IN???

  3. #3
    Senior Member RACING JUNKIE
    Join Date
    May 2006
    Posts
    2,044
    I agree with the above, your cam is most likely the same grind but with a 113 lobe seperation.
    Here's the comp cams grind and part number I found for the above specs.
    Grind # 47S 321 R12
    Part # 11-747-14

    You can go to comp cams website and enter in them numbers and get all the info you want.
    Goodluck, Charles
    ***IN GOD WE TRUST***

  4. #4
    Member MASTER JOURNEYMAN
    Join Date
    Nov 2003
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    43
    Thanx for the help guy's. I went to comp cam's site but found nothing. Any other help would be appriciated! Thanx for thaking the time to help! fastted

  5. #5
    Senior Member RACING JUNKIE
    Join Date
    May 2006
    Posts
    2,044
    Judging by the numbers you gave us the cam is definetly a 4/7 swap and CC pretty has the market cornered on them so that alone tends me to believe its a some sort of custom grind they made, which they do quite often and when they do they put funny numbers all over them.

    You might try calling COMP CAMS tech line>
    be prepared for a long wait they dont get a in hurry for nobody.

    I do know A guy who grinds cams there and I could give you his number but I'm not sure if he knows all about their part numbers and stuff.
    I bet the tech line will be your best bet.
    Comp Cams Tech support - 1-800-999-0853
    Goodluck, Cp
    ***IN GOD WE TRUST***

  6. #6
    Member MASTER JOURNEYMAN
    Join Date
    Nov 2003
    Posts
    43
    How can u tell it's a 4/7 swap? Thanx 4 all the help! fastted


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