Ok, I need some input, lets try to stay with the cams I'm considering.

07 FLHTPI 103" factory header, with jackpot dyno tuned slip-ons, PCV mapped from Fuel Moto.

Bike runs strong, has 40,000 on the clock and is used almost daily with 50% two up. Current feel of the pants sweet spot is between 2700-3200 rpm but seems to run out 3500+. I'm looking to do a cam only swap now and spent the money on auto-tune instead of head tweaking (maybe some other time)

I have had my eye on the Andrews 54 and Woods 6-6 for some time and then came the 555. The 54 and 555 look real close to me and are at the upper end of lift what I fell is good for daily commute. The 6-6, HQ 500 and S&S 510 look similar to me as well and I like the lower lift as far as dependability. According to the compression calculater the HQ 500 came out on top 9.49-1 From what little I could find on the HQ it liked more comp, a friend of mine has the 0034 in his 88 and is happy with it . Am I off target here?

I like to hear from some that have run the S&S and HQ, I can find plenty of 54, 555 and 6-6 graphs and comments but little on the other two.

Ok, so here is another cam thread maybe tomorrow we will do tires

 

There are alot of threads about cams on here, you'll see alot of guy's are happy with there choices and some not so. If it were me I'd go with the SE204's or the woods 6, the only thing about the woods 6 is they need a bit more compression but since there going in a 103 you may be fine. Still my choice would be the 204's.

 

each person has a different experince with cams to some degree. i think the biggest impact is going from stock to aftermarket in cams. thats usually where you see folks say.."wow what a difference, this cam is great."

what this dosent tell you is the difference in various cams from one another. mostly i've found is you MUST define where you want the power...if it's low seek that specific cam(s) if it's up high seek that cam(s).

in my '09 flhx with a stagII 103 with the 255...freaking loved the low end grunt and felt it didnt really fall off to me. it pulled and pulled and for 2-up riding i found it really good. after a while i got all caught up in the cam talk and ended up getting a 555 thinking it would barley shift the tq to the right and i'd love it.

it did lower my ccp and temps but it failed, for me, where i ride. i had to keep the rpms up to be in the sweet spot which i didnt care for after a while. tq shifted to the right about 500-650 rpms and that dosent sound like much but when youre in 5th or 6th and wanna pass i had to downshift to pull hard. in the upper mid and high it did pull hard though,,,but for me the 255 was much more fun.

in summary - stock to upgrade, you'll be pleased with about anything, provided you determine where you ride. going from cam to cam without proper additions like increased compression and stuff, may be disappointing

 

Ditto on that bro, the SE255 cams woke my glide right up, got 6th gear back now at 70mph 2500rpm, before 6th was rarely used..

 

Contact Kevin at ProTwin Performance, 678.939.8029 regarding the HQ-500; it's a great cam for your application, and Kevin has a lot of experience installing the cam on 88, 96, 103, and 110 motors.

Carl

 

Sounds like you have narrowed down the field and from the lot you have listed, the Woods 6-6 is a good choice.

I will throw out another one; Andrews 48 with .030" head gasket with a 4* retard sprocket or straight up with the stock head gasket if not pulling the heads. A lot of the performance, or lack thereof, attributed to cam selection is the result of setting compression in the "sweet" spot for the selected cam which often times requires a little machine work on the heads. Target 9.3 corrected compression and 190psi cranking is a reasonable goal. The Woods 6-6 gets you there with a .030" head gasket installed straight up but can be noisy. The Andrews 48 intalled with the 4* retard sprocket (or straight up as noted above) will pull down low like the 255 but will carry out to 5000rpms; doesn't have the noisy rep that Woods cams do.

Any cam with a 40* intake close will get close; just need to select a cam that fits your riding style. 50% two up would point me to the 6-6 or the 48 or maybe the H-D 254E or SE204 if a MoCo cam is in the picture. JMHO.

 

another factor in CAM selection....what compression ratio will you be at...some CAMs have operating thresholds that put them in compression ratios of less than 10.0:1 like the 255. So for example, if your at 10.5:1 to 11.0:1 than you might be looking at a 259E or 260 CAM.

 

The 255 is out, my brother in law has the same bike, 07 FLHTPI sert, stock header, se slip-ons. He did the 255 and I rode it, did not impress me at all. This might have something to do with the gearing of the 07 and 08 bikes.
Some time ago the local HD dealer had some free dyno runs, he had maybe 2 or 3 more HP and 6 more TQ. For that little increase I would rather do head work

 

According to Big Boyz calculator, static comp @ 10.14, corrected @ 9.49 with a cometic .030 head gasket

 

OK, after further reading on cam specs, and mind you I'm not an engineer. I have come to the following. The Woods 6-6, Andrews 37, S&S 510 and HQ 500 are all close.
Lift is between 500 and 510, so now it comes to cam timming and duration, this where I need some help.

--------------------------@.053---------------- duration ------------tdc lift

Woods 6-6 -------------20/40 ------------------240 -----------------.191
---------------------------42/18 ------------------240----------------- .173

Andrews 37------------ 18/38 ------------------236 ------------------.174
---------------------------46/14----------------- 240------------------ .148

S&S 510---------------- 20/38------------------ 238------------------ .187
--------------------------52/20------------------- 252------------------ .178

HQ 500----------------- 20/36------------------ 236------------------ .174
---------------------------51/19 -----------------250------------------- .166


Any gurus out there?