1397 What Size Cams?

[busakiller]

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?

 

[202mphbusa]

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

 

[busakiller]

Would 415s be to big?

 

[202mphbusa]

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

 

[busakiller]

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.

 

[Blackmax]

425/425