107 build looking for a cam
Road Captain
Joined: Jul 2012
Posts: 687
Likes: 1
From: Texas
I would think ya would have picked a cam before having the heads done?? I'd sure call bigboyz because they should know what works with the heads they did and point towards a cam that will suit your riding style/expectations??? I'm a big fan of having a "goal" and putting together parts designed to work together instead of doing "science projects".
Outstanding HDF Member
Joined: Sep 2010
Posts: 2,630
Likes: 185
From: Mountain West, Big Sky Country
check out the woods website
http://www.woodcarbs.com/dynoruns.htm
I have the 408G in my 107. I like it a lot.
http://www.woodcarbs.com/dynoruns.htm
I have the 408G in my 107. I like it a lot.
Seasoned HDF Member
Joined: Oct 2007
Posts: 56,052
Likes: 88,721
From: Western South Dakota
I would think ya would have picked a cam before having the heads done?? I'd sure call bigboyz because they should know what works with the heads they did and point towards a cam that will suit your riding style/expectations??? I'm a big fan of having a "goal" and putting together parts designed to work together instead of doing "science projects".
Tourer
Joined: Apr 2011
Posts: 369
Likes: 3
From: Hoisington Ks
Know what you mean. More Cubic Inch's need More cam, hot cam for 103 is not a good cam for 107,110 or 113.
Found My cam for the 103. know that it would not carry over to a bigger motor. But I'm not looking @ "bigger" until I wear this one out. I'm a "Happy Camper" w/my 103"
Dan B.
Central Ks.
Found My cam for the 103. know that it would not carry over to a bigger motor. But I'm not looking @ "bigger" until I wear this one out. I'm a "Happy Camper" w/my 103"
Dan B.
Central Ks.
Tourer
Joined: Oct 2012
Posts: 302
Likes: 8
From: Maryland
As stated earlier, Call Bigboyz since they did your heads.
Since your top end is already built, your Static Compression ratio will drive your cam selection. Higher static compression requires a later Intake valve closing ABDC to keep your dynamic compression in an acceptable range. Shoot for a corrected compression ratio around 9.0:1
The Bigboyz web page has a "Twin-Cam Compression and Engine Displacement Calculator" that will help with your cam selection...
http://www.bigboyzheadporting.com/TwinCamComp.htm
Do a little research and be honest with yourself about how you ride before you choose a cam. Bigger is not always better.
Since your top end is already built, your Static Compression ratio will drive your cam selection. Higher static compression requires a later Intake valve closing ABDC to keep your dynamic compression in an acceptable range. Shoot for a corrected compression ratio around 9.0:1
The Bigboyz web page has a "Twin-Cam Compression and Engine Displacement Calculator" that will help with your cam selection...
http://www.bigboyzheadporting.com/TwinCamComp.htm
Do a little research and be honest with yourself about how you ride before you choose a cam. Bigger is not always better.
Road Warrior
Joined: Feb 2009
Posts: 1,274
Likes: 130
From: Now Western TN
Great guy to talk too and wealth of information on this subject.
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