Best head for build.
Tman or s&s

 

BC Gerolamy heads!

 

IMO cams determine your head choice not displacement.

 

^^^^^ That^^^^^. Best to match the head design to whatever cam you end up with. Call and ask some questions with a company that puts together 107" packages.

 

it is ALL about matching the heads to the cams and other parts...... you really need to give the people doing the machine work on the head your engine configuration.

I thought the 107 engine was best done by Fuel Moto?

Jamie care to chime in

 

Don't get too caught up into the idea that head work has to match the cams. Fuel moto runs all sorts of cams using their level b heads and seems to have decent results with all of the cams used, 222's, 555's, 777's , 888's and 8-6's. And in differing displacements as well. If it was so critical to "match" the cams to the heads then they would tailor each set of heads to the set of cams being used in each kit. Or they wouldn't offer so many cam options with their 107 level b kit. But they do. Their headwork is cnc so they could have done it if they thought the results would warrant it. I'm not saying it is easy to develop different head designs but i'd bet they came upon many different types of porting that worked better,while developing what ended up being called the level B, with lets say the 555's than the level B does and works about the same with the 777's and not as good with the 888's but the results were not significantly better to warrant developing 2 or 3 levels of headwork.

 

I have a 107 with Axtell jugs and using the stock heads from my 06 RG. They were reworked for better air flow and I suppose a few other magic things that my builder specializes in that give him his great reputation. Skip's Cycle in Winchester, VA. He calls it, "The Silver Bullet heads". I'm running 10.5:1 with 585EZG S&S cams. Numbers are 121h/132t.
I'm running a car tire on it so I'm not going through back tires as fast.

 

The head matters little; it is how they are "worked".

 

I have woods 777 cams have the s&s kit already not installed still undecided on heads due to all the choices.

 

Baisley
http://www.baisley.com/head_service.htm