1397 What Size Cams?

Discussion in 'All Motor' started by busakiller, Jul 11, 2017.


  1. busakiller

    busakiller Registered

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    I have a 1397 in my bike right now and it made 200whp on c110. The head gasket went out so iam pulling the motor out to fix the head gasket. I have another thread posted as iam thinking about doing a gen 2 crank. But I might just upgrade the cams I have now and bump up the compression. Right now I have mega cycle cams intake is 397 lift with 248 duration and exhaust is 360 lift and 252 duration. The head is ported with 1 mm bigger valves. How big of cams can I run? Would be worth upgrading?
     
  2. 202mphbusa

    202mphbusa Registered

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    Busa heads like big cams
    I went from .401/.378 to .378/.345 and lost 13.1 HP
     
  3. busakiller

    busakiller Registered

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    Would 415s be to big?
     
  4. 202mphbusa

    202mphbusa Registered

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    If they do not hit the guides, and you do not mind changing valve springs every other year, no they are not too big
     
  5. busakiller

    busakiller Registered

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    This is more of a race bike. Maybe sees 200 miles on the street and that's just doing highway pulls. Plan on just doing highway pulls, drag racing and a couple lsr events. So changing them every other year won't matter to me.
     
  6. Blackmax

    Blackmax Registered

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    425/425
     

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