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107" build thoughts

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Old Mar 9, 2016 | 06:07 PM
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Default 107" build thoughts
I'm in the market to build a 107" for my 08 Fatboy. I'm going to stay with my stock heads for this year at least and possibly do head work next winter.

So far, I'm going to have my stock 96" bored to the 3.935" (give or take based on eventual pistons).

I'm leaning toward the T-Man 625 cam. I'm still undecided on pistons, but my machinist and I are leaning toward CP or Wesco.

I'm also honestly considering regearing so I can make 6th gear more "useable" at 60 mph.

Thoughts overall?
 
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Old Mar 9, 2016 | 07:35 PM
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The 625 cams in a 107 arnt going to work very well with bone stock heads,ide at least think of mild 1.900/1.630 headwork
 
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Old Mar 9, 2016 | 09:05 PM
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Can you explain why? Head work won't happen this season mainly due to funds.
 
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Old Mar 9, 2016 | 10:23 PM
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I would wait until you have the fun money to do it all at once. Much more bang for the buck, and smiles per like.
 
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Old Mar 9, 2016 | 10:28 PM
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I'm bored of the stock 96. It doesn't make any sense to me to wait 6+ months and a whole riding season on a tame 96 when I know I can do the 107. Will it be done "***** to the wall"? No, but it's better than I have now and it'll give me anot her reason to tinker next winter.
 
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Old Mar 10, 2016 | 03:51 AM
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625 cams with stock heads? I don't think they will handle that lift
 
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Old Mar 10, 2016 | 06:30 AM
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.625 cams will not fit under the OE spring.
A Kury 24D will, and at 10.2 cr(flatop 107", .030" head gasket)it'll run very well.
An S&S .570 would also be a good choice with a .040" gasket.
Scott
 
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Old Mar 10, 2016 | 06:06 PM
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Just choose the right cam head work doesnt make all that much difference you will still get a good bump with 107 upgrade and cams and a good tune !
 
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Old Mar 10, 2016 | 08:38 PM
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You'll get a nice increase yes but "headwork doesn't make much difference" ?

Sorry, I disagree
 
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Old Mar 11, 2016 | 05:49 AM
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The OEM untouched head on a 107" cannot create the cylinder fill needed to allow that size powerplant to perform to it's full ability, by any means.
Scott
 
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