Advise on cam choice Woods 777 or???
Outstanding HDF Member
Joined: Jun 2011
Posts: 3,036
Likes: 19
From: Savage, MN
Just as I said the 555 numbers are almost the same a mine the curve is just further right on the sheet. Look at the first few posts in this thread it's well known you need decent compression for the 555 and more for the 777 or it will be a dog in the low rpms.
Last edited by WG2011; Aug 8, 2013 at 10:11 PM.
Road Captain
Joined: Dec 2010
Posts: 646
Likes: 5
Not sure if this helps but I dynoed 105/120 with 107 kit and 555s. Jamie at FM recommended head work only if I was going to go with 777s. My build tears it up in the mid-range, but only comes on strong at about 3,000rpm. I guess it depends on riding style and eventual goals/$ with your build.
Road Warrior
Joined: May 2011
Posts: 1,956
Likes: 437
From: florida
I've had other low grunt cams in light bikes as you have done and I have thrown the 777 in a stock 96. I can tell you from real world experience that having over 100 ft/lbs at 2300 rpm is nice (especially for a bagger or real heavy person) because weight matters. But cams like this don't make great upper rpm numbers. My stock with 777 made 90 ft/lbs at 3000 rpm which is not a dog for a light dyna ( I don't ride around at 2500 rpm often) and the tq carried out higher and farther than yours will and the peak hp is was higher too. This is reality. Compression matters huge (I run my bikes with high comp, see it in my sig) but the low end tq on a light bike and aggressive rider is not as big a deal as you or others claim, unless you ride under 3000 rpm a lot. JMO based on doing it.
Tourer
Joined: May 2013
Posts: 384
Likes: 2
From: Missouri
Exacty I called Bob about a +4 key to move the curve left some and he told me not to waste my time. He said I needed to add compression to get these cams to really work like they should even in my 103.
Cruiser
Joined: Jun 2012
Posts: 145
Likes: 0
From: Maine
Gotta love it when people start getting into cams and dyno results. And from alot of Dyno tuners and sheets I've seen thru the years Woods and Tman cams perform very similar. In some builds a Woods cam will get you better numbers and in some others the Tman cams will produce better. In my setup I gained 6 hp and 9 tq from a Woods cam. Everything else was the same even the tuner who tuned the bike. Check out harley tech talk the real tuners and engine builders hangout there. All I'm saying is don't limit yourself to one particular set of cams. Andrews has many cams to choose from along with S&S ask this same question over at the site I mentioned and get real true info from some of the top tuners and builders out there. I also will say FuelMoto makes a very good product and is top notch but the majority of the time you will not see the numbers they post on their site. Seen it first hand at several dyno shootouts where guys said there 107 was producing 125 plus hp and tq and were upset that they showed less than 110 for both. Just saying christ check out some 120r dyno sheets on the site I mentioned and they mostly are in the low 120s. If it was that easy and cheap to make 125 hp/Tq like some kits out there S&S and SE would be out of business.
Road Warrior
Joined: May 2011
Posts: 1,956
Likes: 437
From: florida
Numbers are all in the level of heads and throttle body to break 120s on a 107 or 103. I did it on even a known "stingy" dyno. HD dealer did my tune, I built it in garage. The dealer had various dynos posted on a wall and had a 120R with 263 cams MVA heads etc.., my little 107 was 2-3 hp/tq under the 120R. Shows me the difference in cams and heads.
Outstanding HDF Member
Joined: Jun 2011
Posts: 3,036
Likes: 19
From: Savage, MN
I smell what your stepping in. For me the 222's work great have not felt like I am lacking in the higher rpms. I mainly ride by myself and I weigh 175lbs so I dont really need the low end grunt but I love the 0-60 pull that the low end tq gives. Funny thing is it almost feels more mid than low I can hammer it and it starts pulling hard in the 3500 range which to me is mid, for some that maybe be low. Reving HD's to hard is an accident waiting to happen had a buddy blow up his 103 two weeks ago cause he rides like a mad man.
I've had other low grunt cams in light bikes as you have done and I have thrown the 777 in a stock 96. I can tell you from real world experience that having over 100 ft/lbs at 2300 rpm is nice (especially for a bagger or real heavy person) because weight matters. But cams like this don't make great upper rpm numbers. My stock with 777 made 90 ft/lbs at 3000 rpm which is not a dog for a light dyna ( I don't ride around at 2500 rpm often) and the tq carried out higher and farther than yours will and the peak hp is was higher too. This is reality. Compression matters huge (I run my bikes with high comp, see it in my sig) but the low end tq on a light bike and aggressive rider is not as big a deal as you or others claim, unless you ride under 3000 rpm a lot. JMO based on doing it.
Road Warrior
Joined: May 2011
Posts: 1,956
Likes: 437
From: florida
Dynas are meant to rev up to upper rpms without much risk, B motors struggle more. As long one gets a good rush when stepping on it, thats all that counts no matter which cam choice or engine mod. Waking up these engines with cams is worth every penny in my view.
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Outstanding HDF Member
Joined: Jun 2011
Posts: 3,036
Likes: 19
From: Savage, MN
True true I was telling some others in a different thread....I felt more change from stage one to stage two (cams) than from stock to stage one. The difference the cams make is awesome.
