I wanted to get members opinions if I have the correct cam for my 107 build. It seems that it doesnt pull as hard as I thought it would. Granted I have a 117 build in my 2010 street glide that pulls like a freight train and maybe my expectations might be too high. But my buddy has a 2016 Low Rider S with a TBR exhaust, high flow air filter and a PC5. And his bike pulls harder than mine. I have Woods TW-888 cams in my bike. Below is the build I have in the 107

Revperf cnc polished and ported heads , valve work, .650 max lift springs, valve guides, 1.9 intake and 1.615 exhaust
Revperf 107 pistons and cylinders 11.2:1 compression. Dome top pistons
Woods TW-888 cams ( I read these are for 10.5:1 compression)
Bassani Road Rage 2 exhaust
High flow air filter
Hydraulic lifters
Quickie adjustable pushrods
Techno Research tune

Is the Woods TW-888 cam which works with a 10.5:1 compression the correct cam for my 107 that has 11.2:1 compression? And I loosing power because of these cams? If i am running the wrong cam what would you guys recommend to get the most out of this motor with more HP and TQ? Or would you guys recommend changing the pistons to a lower compression to suit these cams? Im not a guru on this but I thought maybe different cams would be the route to work with the 11.2:1 compression.

 

Does the motor ping? I would drop the compression or leave it and change the cam to a T-man 590.

 

With 11.2 static I'd think you'd be better suited with a cam that has at least a 52° intake close. Is it pinging now?

 

A Wood 9F, or T-Man 662-2 are both choices for that compression.
A Wood 408-6 at 10.5, is a powerful cam, in a well built 107".
Arbitrarily raising the compression does not guarantee a power increase, and can be harmful if the combo ends up with too much ccp.
Scott

 

I agree with the 662-2,why was compression set so high? matching cams & compression is very important but I have noticed some builders setting compression WAY higher than it should be for the cams being used.

 

The first thing I would check is CCP and see where it lands, that will tell us if the motor is actually 11.2:1, we've ran the TW-888 up to 11:0 in some applications and it pulls hard. The 888 cam is essentially a shorter lift version of the TW8-6 with less LSA. If the motor doesnt have excessive compression and is tuned properly something is wrong if you are getting outrun by a Low Rider S with Stage 1 mods as there should be a 30+ Hp difference. Do you have a dyno chart you can post?

 

If you are looking for more power in that 107", the cam is not the issue, but another will help.
I just saw that you are running a 1.900" intake valve.(265 cfm @ 28" @ .650 lift? maybe?)
We would suggest a head that carries a 1.940", or a 2.020" intake to increase cfm needed to expose more hp.
Our Stage III Super-Tour, or Stage IV comes to mind.
The Stage IV pulls right at 300 cfm @ 28", @ .650" lift, but starts to grab big air as early as .300" lift, to begin the cylinder filling event sooner.
1.800" intake manifold port ID also.
Scott

 

Absolutely MORE HEAD... Need to do a compression test as well, that should lead you in the right direction... I used that condo of valves on my 80"er. Worked good there but don't think it would compliment a larger cubic in motor higher rpms.... Good for low end torque though....

 

Thanks for all your feed back. I will look into everything. As for whether I hear pinging coming from the motor I thought I may have heard something today. Regarding my heads and the way they are sized. Could I send my heads in to get them to get them to what your suggested?