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The HP and torque measurements on HD's website show that the Dyna has 3 more ft lbs of torque, but as someone said earlier, the motor get's torqued around in the frame on the mounts, while the ST is solid mounted and may deliver about the same to the rear wheel.
The real difference is that the 88B motor is smoother in the city than the Dynas are, and make for a much better city cruiser/barhopper. On the highway, with the new 6 speed, the balancers don't make that much of a difference up to about 90 or so. Above that, the dynas have it.
If you want pure HP, get an earlier FXST with an EVO, and put a bigger lump in it. Otherwise, it doesn't make that much of a difference. The older Dynas couldn't jan dle as much power, becuase the frames would flex and sometimes get twisted. The FXR frames were stronger.
Any way you go though, and I don't think you'll be too disappointed, unless you go riding with guys who race from light to light.
I think its like 5 hp difference between stock engines 96A & 96B. After mods such as pipes, AC, EFI I don't know what the difference will be--probably not much. Personally, when riding a Dyna or Bagger, I notice the engine shake of the 96A but not a couple extra hp.
Do it. If you can, test both. You'll find one that rides the way you like it.
For me it was a toss up between the Fat Bob and the Night Train. The dealer I go to only had a Fat Bob in vivid black and couldn't get any other color since they already went through their allotment. I sat on it and on a Train and decided I like sitting on the Train better. Those two facts are what convinced me to buy my '08 Train this past May. I haven't regretted that decision yet and I've put over 5100 miles on it.
I'm willing to bet that if you wanted to basically turn the 96B into a 96A, all you'd have to do is change the crank. LOL
All you have to do is take the chain off the balancers and you have the A Motor, but what's the point. It's smooth, reliable and if you want that couple of extra ponies, a couple of bolt on items will match and exceed the minimal loss of hp. I still remember my panhead vibration, so not much chance that I would ever remove them
Ron
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