Best cam for my build, Wood or Kuryakyn

[trex]

I'd like to hear opinions on a cam for my build. My bike is a 03 Dyna Superglide that I ride solo, no passenger pegs and solo seat it weighs 630 lbs full of gas. I weigh 210 lbs.. I live on Maui and our gas is E-10 gasohol, never caused any problems. I am having Mathews Perf. Stage 2 my heads and bore to 95 in. Don't know the flow rates of the heads but they will have 1.9 intake and 1.61 ex valves. Beehive springs. I'm using Fueling oil pump and cam plate, and the new Schubeck Rollerx lifters. I'm using the stock Carb and head pipes with the crossover tubes and KromeWork mufflers. Got the Ness backing plate for the carb. I'm having problems deciding on a cam because 1. Mathews the man doing the heads likes Wood cams, and the Harley tech here on Maui doing the labor likes Kuryakyn but says whatever I want is good. Mathews had 10:1 comp ratio in mind or maybe 10.5:1 at most and says my pipes and carb are ok and that roller rockers are unnecessary because he was thinking .570-.590 lift on the cams.Sounds good to me, expense. Then I talked to Bob Wood and he says big carb, pipes, roller rockers, double valve springs etc. I'm not going to do all that, I like the Beehive spring idea and will stay with my pipes and carb for now anyway, but am definitely going gear drive and will use Wood Helical gears on the backside. If I was to use Kuryakyn cams  the TC-4G look about right, .560 intake and .550 exhaust. But not sure about the Wood cam that would work best, any suggestions? Heard lotta good about Wood cams but want  as quiet as possible too.

[rigidthumper]

If you are gonna go Kuryakyn, the biggest I'd use is the TC26Gs, set at 10.5.  Capable of big HP, if the ports work well. You don't have (IMO) enough cubic inches to take advantage of the TC4G.  If you want woods, the TW6H is a proven performer. TW5G comes on earlier, but doesn't hold as long on top as the 6H.

[sfmichael]

If you are gonna go Kuryakyn, the biggest I'd use is the TC26Gs, set at 10.5.  Capable of big HP, if the ports work well. You don't have (IMO) enough cubic inches to take advantage of the TC4G.  If you want woods, the TW6H is a proven performer. TW5G comes on earlier, but doesn't hold as long on top as the 6H.

[Hillside Motorcycle]

IF, you moved the compression up .25 of a point, then you'd have the squeeze right for a Wood 8.
Scott

[tc1550]

tw6h in my 95 never been happier noisy at times but at roll on time you will smile.

[Admiral Akbar]

I find the site interesting.

http://www.amtperformance.com/amt/tech_talk_valve7.aspx

Particularly this quote.

A 103 cubic inch V-Twin style motor with a 4.375 inch stroke and a 3.875 inch bore will require 322 to 345 CFM of air at 28 inches of depression depending on the RPM range. (193 to 206 CFM at 10 inches) That is a lot of air. None of the Motor Company heads will get you there. S&S, T-Man, Elderbrock, Mackie, Head Quarters, Patrick Racing, Branch, Hot Shot, and Delkron won't get you there either. Zipper and STD may be able to get the number but they are not doing it on stock castings. S&S offers a B2 head, but it will not fit a stock bolt pattern. To my knowledge, at the time of this writing, no one is making more than 310 CFM at 28 inches on stock castings that are a street able advertised head. Our heads changed that. Our M3 head will flow 327 CFM at 28 inches AND velocity in the port is appropriate to allow the head to function in a wide range of applications. How? "Knowledge is Horsepower............You can't fake what you don't know." Kyle Mathews

While I don't now about the all of the venders  listed, I suspect that his hit on T-man would be off.. Wonder why he didn't mention Baisley..  Wonder why he doesn't show any dyno runs??

Assuming he does get good flow. I'd pick the woods cam with less duration..

Ask for flow data on you heads.

Max

[Don D]

Interesting for sure. Not that I would be wanting to buy any of that or adopt the practice of putting 320+cfm heads on a 95" motor.
A head that has ~300fps velocity and flows enough to achieve 6500 rpms would be a better choice.

[Deye76]

"Mathews the man doing the heads likes Wood cams"

He should know.

[trex]

IF, you moved the compression up .25 of a point, then you'd have the squeeze right for a Wood 8.
Scott

I think it's a Wood 8 then, and will go with a 10.25:1 comp ratio, heard that from another source and Mathews had mentioned the 8. I guess I just like to research the hell outa something when it's that kind of money. Thanks Scott and other guys for the responses.

[SDBarhopper]

Hmm.. I'm certainly no expert but I think you misinterpreted Scott's advice. I believe he meant .25 in the other direction (10.75). The Woods 8 is generally considered to be optimal at 10.8. The 6 at 10.2-10.3. This is not considering gasohol as fuel however, I'd leave that to the experience of the local tuner(s). FWIW,  I ran a well-tuned and built 95" with the Wood 8 at 10.25 here and found the bottom end power to be a bit soft. Definitely not a mistake you want to make for street application. I changed to the 6h and never looked back. Dewey once told me,"do your research, come up with the optimum cam for your application and then go one size down". Applicable in this case I believe. Re: roller rockers: 8 and 6h are 590 lift, 6 is I believe 510. If you don't plan on running rollers I'd stick with the 510 cams. I've seen people get away with all kinds of short cuts over the years on this forum ... for a while, but end the end have problems. I overbuilt mine and flog it to the point that it's known in SD with laughter,.. except for those I race . Never a problem in five years.

[trex]

Ok, thanks SDBarhopper, makes sense with the rollers too.

[RevFastEddy]

Wow... where on Maui could you even think about hitting 6000 through the gears...?

You want power think about a woods 400 or 408 and you can hold 10.5/1 easily on that alky blend. Nice cams and very street friendly. You have more octane than stateside gas but also less miles per gallon..   Of course its only 100 miles of road on the island :-) so who is worried about mileage.  With those pipes it wont make very much difference in sound with any cam.

BTW.. I really like Maui..

[trex]

Wow... where on Maui could you even think about hitting 6000 through the gears...?

You want power think about a woods 400 or 408 and you can hold 10.5/1 easily on that alky blend. Nice cams and very street friendly. You have more octane than stateside gas but also less miles per gallon..   Of course its only 100 miles of road on the island :-) so who is worried about mileage.  With those pipes it wont make very much difference in sound with any cam.

BTW.. I really like Maui..

See why I'm having a hard time deciding? I've settled on the 6 then I hear this. Plenty places to hit 6 grand brah.

[Admiral Akbar]

FWIW,

If this guys heads flow as good as he says, You want the smaller cam in the 95.. W6H would be good. I would not go with the W8 or the 400 stuff,  Save that for those heads and a 107 kit..

Max

[Don D]

 

[trex]

Yea no way I'm goin over .600, I think the TW6G is probably the one. I don't want to run rollers or really high comp. ratio, and want to stick to stock carb for now and stock head pipes with KromeWork mufflers. I love this forum!

[truck]

trex..Come to the KBH some morning January 3 through 12 ( but not the 4th) and I'll buy you breakfast.

[trex]

trex..Come to the KBH some morning January 3 through 12 ( but not the 4th) and I'll buy you breakfast.

That sounds good but where is the KBH? I live on Maui, you in Penn? All my relatives are there.

[truck]

KBH is The Ka'anapali Beach Hotel, a few miles down the road from Lahaina. I'll be vacationing there on those dates.

[trex]

Never heard it called that, but don't pay attention to the hotels. But hey that sounds good truck, too bad you won't be here for Toys for Tots run, it's a lot of fun, we don't stop at any lights or sighns, the police make it easy for us. Can you message me bofore that and I'll get ahold.

[truck]

Personal Message sent.

[Showdog75]

I'd definately go with what your head porter recommends. With that being said don't discount the Kury 26g , they recieve ALOT of bashing on this forum But they can and will scream and put up better numbers than most cams out there in a 95". I know because I've had wonderful results personally BUT they need appropriate heads and t-body/carb and a tune from a real tuner not just a dyno operator.

[trex]

I'd definately go with what your head porter recommends. With that being said don't discount the Kury 26g , they recieve ALOT of bashing on this forum But they can and will scream and put up better numbers than most cams out there in a 95". I know because I've had wonderful results personally BUT they need appropriate heads and t-body/carb and a tune from a real tuner not just a dyno operator.

Your right Showdog75, I either trust him or I don't, just emailed back and forth and he says I should go with the TW8G and he's doin the heads so that is the way I'm goin.