cam ??????????????
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cam ??????????????

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    RLP
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    Default cam ??????????????

    Hey guys what would be a good cam for a 496 bbc solid roller
    10.25 comp.Dart pro1 heads(325) on pump gas.
    looking at adv.dur 286 301 and at 50 its 253 266 and 685 685 lift on 110

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    Quote Originally Posted by RLP View Post
    Hey guys what would be a good cam for a 496 bbc solid roller
    10.25 comp.Dart pro1 heads(325) on pump gas.
    looking at adv.dur 286 301 and at 50 its 253 266 and 685 685 lift on 110
    Are you looking for something off the shelf, or are you willing to pay for the right cam?
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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    RLP
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    Quote Originally Posted by steelcomp View Post
    Are you looking for something off the shelf, or are you willing to pay for the right cam?

    whats the right cam?
    want it to be all it can be with what we are working with.

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    northern member Canuc's Avatar
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    Question more info needed

    Quote Originally Posted by RLP View Post
    whats the right cam?
    want it to be all it can be with what we are working with.
    prop , jet , intake , exhaust set-up etc. target rpm range all need to be considered .
    Quote Originally Posted by gn7 If your ran a cammer your odds of finishing WERE ZERO.

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    steelcomp was here
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    RLP...sent you a pm
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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    RLP
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    Quote Originally Posted by Canuc View Post
    prop , jet , intake , exhaust set-up etc. target rpm range all need to be considered .
    its a jet o/t bassett twisty style merlin intake with a dominator carb
    aggressor B impeller 496 bbc 10.25 comp
    cam i posted specs on in first post works perty dang good in my
    Warhawk TX-20 jet.
    I am building the same engine for a good budy but was wondering
    if they may be a better cam for this engine combo ?

  9. #7
    northern member Canuc's Avatar
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    Cool nice build

    Quote Originally Posted by RLP View Post
    its a jet o/t bassett twisty style merlin intake with a dominator carb
    aggressor B impeller 496 bbc 10.25 comp
    cam i posted specs on in first post works perty dang good in my
    Warhawk TX-20 jet.
    I am building the same engine for a good budy but was wondering
    if they may be a better cam for this engine combo ?
    what's your rpm with your aggressor B ???? how bout a 112* LSA to carry them a little more , i'm guessing you should be over 6 with that combination and that your cam is pretty close . hope you get some more guy's chipin in here that like to bench race cams
    Quote Originally Posted by gn7 If your ran a cammer your odds of finishing WERE ZERO.

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    I found on my jet when I went from a 110 LSA to a 114, lift and duration the same, I lost 300 rpm. This was in a 9:1 460 BBC N/A.

    Tim

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    RLP
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    Quote Originally Posted by Canuc View Post
    what's your rpm with your aggressor B ???? how bout a 112* LSA to carry them a little more , i'm guessing you should be over 6 with that combination and that your cam is pretty close . hope you get some more guy's chipin in here that like to bench race cams
    yea its 6,200 to 6,300.
    Bench race i dont know what ya mean but if it was a car i would go with way more cam but was always told the bigger car cams want run good in a jet boat. know what its like to run 5.30 in the 8th small block chevy
    and 8.80 in the 1/4 big chevy.
    found the right combo 350 SHOT should do it

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    RLP
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    Quote Originally Posted by River Rat 005 View Post
    I found on my jet when I went from a 110 LSA to a 114, lift and duration the same, I lost 300 rpm. This was in a 9:1 460 BBC N/A.

    Tim
    yep. this cam runs best on a 108 but Herbert said to go with the 110 in the boat

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    just trowing it out here, duration is based on static comp, lift is based on with the heads flow, wider lobe sep say 112-114 builds comp and lower 108-110 bleeds off comp at lower rpms say the 110 will give you 300 more at the top the 114 will give it at low and midrange. when i built my 601 i called the cam companys with spec's of motor and you will get ten diff answers and they all think the other cam company is nuts. p.s i like the cam you picked out,i dont think you can go much bigger in duration with that low of comp in a jet boat. torque rules in a jet. oh ya IMHO look mom im textin......

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    northern member Canuc's Avatar
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    Thumbs up 6200+

    RLP that set-up is working good !!! bench racing = bullshiting different idea's , too much duration in a jet with a big impeller and you will stall it before you can get it to peak torque rpm .

    R R 005 did you advance the cam with the 114 to have the same ICL ?

    flat601 lots of variables and opinions with cams all right ! mine on LSA , tighter (less) = intake closes sooner which builds more cyl. pressure .
    Quote Originally Posted by gn7 If your ran a cammer your odds of finishing WERE ZERO.

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    RLP
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    Thanks yall like to hear the info.
    this is what i would think would make the 496 kick ---
    299 310 262 272 703 703
    on a 108

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    Canuc, you're taxing my brain now. That was many years ago. Today I would have, but I'm thinking back then I didn't. Could have made a difference. I know I did play with straight up, advancing and retarding the 110 cam 4*. I didn't see any rpm change so I left it retarded figuring it would give more top hp.

    Tim

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