Not knowing how much tq/hp you really want out of it and if you have a budget, makes it tough for a recommendation. What I can tell you is I have an HD stage 3, stock heads with aftermarket cam, header, mufflers, HD oil cooler fan, SE intake and the SE 64 TB. It runs 130/120. It has very good low speed/rpm driving manners. It's fast, but not stupid, have to be careful every time you twist it fast.
I've seen 117's running 3-5 higher tq/hp than mine and 120's in the high 130's low 140's.
You already have a performance cam and don't sound satisfied. I'd choose a big bore kit and cam, instead of just another cam. I've tried to set mine up with reliability and driveability as higher factors than all out power.
What aftermarket cam are u running with the SE stage 3?
Well the thing is cams for M8's are fairly inexpensive. Do you want a lot of torque or do you want more hp at the top? Rush and Dragos both have pipes for the M8 coming out soon that will go both ways, 2:1 or 2:1:2. From what I have seen of the dyno graphs on the M8 a 2:1 moves the torque dramatically to the left, lower rpm's. So you could go with a TTS 150 or S&S 475 and still get good low end with a lot of HP on the big end. Then if you didn't like it or it wasn't enough you could go big bore, maybe with the same cam if you keep the compression down a little. There are options and there will be more down the road. The RS 468 is an impressive cam for the 107. It can be had for just over $200.
I'm wanting more of the torque than anything else. I very rarely see north of 4000 on my bike. I like the 475 results I saw posted and FM seems to have a low compression 117" that works well with the cams in their test. Which cam did you end up leaving in your bike?
I'm wanting more of the torque than anything else. I very rarely see north of 4000 on my bike. I like the 475 results I saw posted and FM seems to have a low compression 117" that works well with the cams in their test. Which cam did you end up leaving in your bike?
I ended up with the RS 468. It would work in a CVO 117”, but what FuelMoto is calling a low compression 117” still has about 10.75:1 compression. It won’t work with that much compression. The 475 probably would though.
The RS 468 made 120 ft/lb of torque at 3500 rpm in my 107. If you want a 117” it will work with I believe Dragos would do that for you. I don’t think you would make less than 130 ft/lb of torque with that setup, probably quite a bit more and it should come up really quickly.
I ended up with the RS 468. It would work in a CVO 117”, but what FuelMoto is calling a low compression 117” still has about 10.75:1 compression. It won’t work with that much compression. The 475 probably would though.
The RS 468 made 120 ft/lb of torque at 3500 rpm in my 107. If you want a 117” it will work with I believe Dragos would do that for you. I don’t think you would make less than 130 ft/lb of torque with that setup, probably quite a bit more and it should come up really quickly.
FM's 10.75 compression 117" was running the 222 and they showed 120/130 on the dyno. What compression seems to work best on the 468?
Ok.....I've been reading through past threads and wondering. My bike came with the HD stage 2 447 cam. First was tuned with the street tuner, dealer then tuned it with a powervision.
I am toying/trying to decide on what I'd like to do. Based on Fuel Moto's cam test results there are 2 that look very promising to me. If I do that though, am I only throwing $$$ at for a temporary improvement, adding 10-15hp and 10-15tq or so? Or should I pull the trigger on their 117" or 120" kit and reap the benefits of the added displacement?
While I'm at it I most likely replace the cam plate and oil pump with a Fueling, but I've been told S&S has theirs about to be released.
Looking for thoughts, suggestions.......
Did SnS say whether their oil pump will use 2 scavenge gerotors? If so I'd wait.
FM's 10.75 compression 117" was running the 222 and they showed 120/130 on the dyno. What compression seems to work best on the 468?
Well even though it made 130 tq/ 120 hp you have to look where it made that power. I couldn't find the dyno chart you were talking about, but I did find some with the 777 cam.
This one is with a 2:1 exhaust and is a little better.
In the first one, if you look at the torque line it doesn't cross the 100 ft/lb until it gets to 2500 rpm. My 107 with the RS 468 crosses the 100 ft/lb line at 2200 rpm. I think the right 2:1 exhaust would move that torque line to right 300-500 rpm and carry the torque farther which will increase the hp output.
This is the chart I would aspire to have:
This is immediate power in the ranges I usually ride in.
The 22x intake closes at 22 degrees abdc and the 468 closes at 15 degrees abdc. I think the RS468 could take 10.25:1 compression without any problem.
Well even though it made 130 tq/ 120 hp you have to look where it made that power. I couldn't find the dyno chart you were talking about, but I did find some with the 777 cam.
In the first one, if you look at the torque line it doesn't cross the 100 ft/lb until it gets to 2500 rpm. My 107 with the RS 468 crosses the 100 ft/lb line at 2200 rpm. I think the right 2:1 exhaust would move that torque line to right 300-500 rpm and carry the torque farther which will increase the hp output.
This is immediate power in the ranges I usually ride in.
The 22x intake closes at 22 degrees abdc and the 468 closes at 15 degrees abdc. I think the RS468 could take 10.25:1 compression without any problem.
Is this the chart from yours and Steve's test on the cams? I'm not completely sold on the big bore kit, as reliability is my main concern. I do feel the HD 447 leaves a lot on the table and I'd like to get that back with the least amount of $$$ out and keep the highest reliability. I guess another good question would be which 2-1 would be the right one. S&S Sidewinder, Thunderheader, Jackpot Road n Track, D&D Billet Cat?
04-23-2018, 06:25 PM
