Probably the former. I have no experience with the 259e but would bet that you'd need to dump quite a bit of compression in the mix to make them work well throughout the RPM range. Install them in a stock engine and I think the low-end performance would be unacceptable, but in combo with the right supporting hardware it should perform very well. That's just my guess.

I think you're in fine shape with 10.5:1 compression, but I think most want a bolt-in for a stock 96" or 103" engine. The TC96 is a particular problem because of its inherently low compression, while the 103 at a half-point higher has a larger list of cams that would work well with it.

 

Hmmmmmmmm, wonder what would be the difference in dyno going from the V&H power duals, to a D&D fatcat......?

More trq? maybe a hp or 2 more?

Anyone here do that with their 103?

 

I bought a 2014 Softail Breakout FXSB 103b.
Stage one from the get go, which included V&H 2into2, heavy breather and a remap, well that was fun.
1000clicks later had them bump it to stage II with the SE254e, pretty sure they just remapped again, she probably needs a professional tune but i'll admit, when I got'er back with stageII, that crazy bitch could nearly yank herself right out from under me ****, I can only imagine what a proper tune might do. and to think my last bike was a 2008 Honda CBR1000RR (that bike was just plain stupid) I was careless one day and launched that puppy right up to 297KM/h in a heartbeat(fly on a windsheild speed), glad that death trap is gone.
Now if I could only find an experienced tuner on the Ottawa area, I'd be interested in givin that a go.

 

I loved the idle sound and power of the SE203 in my 2006 EGC with the TC88. Now I have a 2013 Limited and I'm thinking about the SE255. Does the SE255 lope at idle like the SE203 did?

 

4 year old thread??? Friends don't let friends runs 255s; But since I don't know ya and ya liked 203s, go for it.

 

I put a used 255 cam in my 103 Limited, love it. Cheap,($150 used) lots of torque, works extremely well with stock exhaust, tune and an AC kit. If you want low end roll on torque, good choice in a lot of cases. If you want a lope at idle, not going to happen. Obviously there are better cams out there, but watch what you pick if you want a rough idle. Too much duration combined with low compression will make a pig out of a motor in a heart beat. A cam with a narrow lobe separation angle but somewhat modest duration might get you what you want. The narrow separation angle works well with a motor with poor heads (our beloved Harley motors) because the motor wants more overlap duration for best power. Short total duration works because it retains more of the incoming charge at lower rpms, for best torque. If you ask in a new post, somebody may post a sound clip of their bike and hopefully some info on low speed torque so you know how certain cams will work for you. Be selective on whose info you listen to though, ego plays a big part in how "good" a cam is. Check out the specs on the Woods 222 cams. They have an LSA of 100,(narrow) and fairly short duration. No experience with them, but they look good on paper to me.

 

I have a 08 FatBob, I did the SE Pro Race Tuner, the 103 kit with 10:1 pistons, the SE 254 cams, SE heavy breather, the high performance adjustable push rods, and SE performance mufflers. I had my local Harley dealer put it on the dyno and dial it in. The final numbers were 89.33 max HP. and 102.40 for max torque. The cam turns on at about 2000 rpm and it's pretty much done at 5500. I have had it to 5000 and it's still pulling hard. I wanted a good pulling bike and I got it. We went to Sturgis last year and going across the Cascades and the Rocky mountains loaded down with all my gear it was like running on flat land and I'm a big boy so that's not bad. I had it to 100+ in spots and it ran sweet. I've read that the SE 255 cam is done at 4000 and I know they use that cam in the 110 inch motors and although I seldom push it that hard I wanted a cam that would run above 4000 and pull hard. The SE 254 does it well in my opinion. Just remember that every bike is different and each change makes different a set of numbers on the dyno. This is just what I got with my bike.

 

Well if You left Wacker's and headed straight for Mt Nebo etcetera, that would be a good start to putting it through it's paces.