The one that produces the most torque at 2500-3000 RPM. Which seems to be what the TTS100 and the Harley 447 were designed for.
We didn't test the SE8-447, but Steve had tested it before and the graphs are on his website, http://www.mastertune.net/products_camshafts.html
They are in the TTS-100 M8 section, there are five graphs there, it is the fifth graph, advance using the arrows.
These tests were not done with my bike and they are 5th gear pulls which is going to show lower numbers, but basically the SE8-447 is a pretty weak cam compared to the TTS-100. On those runs the TTS-100 crosses the 100 ft/lb torque line about 2200 rpm where as the 447 gets there around 2850 rpm. Although it is a little better than stock, I would not put it in the same category as any of the aftermarket cams we tested.
So the TTS100 seems to definitely pull the hardest, but which cam would be best for passing a truck on the highway, riding two up, without having to drop it into 5th?
None of them! If you're passing a truck riding two up, drop a gear! You will accelerate much faster than trying to roll on in sixth.
Hey folks, I hope I'm not overstepping any boundaries here... I just like data.
Similar to the charts I posted, these aren't scientific because I don't have the actual numbers - This is just from what I could pull of the charts $tone posted...
Below, see "heat maps" of the torque and HP figures from the cams as I see them. Darker (green) is "better", or atleast comparatively higher in each rpm range.
Last edited by brycenator; 03-24-2018 at 02:26 PM.
Reason: bad data
Your numbers seem a little off- how can the 150 make less TQ than the 468, but more HP, @ 5500? Mathematically, that doesn't jive?
Thanks for that catch. As it turns out I was off 500 RPM on the 150 line. (Was using 5500, 6000, & 6500 for the last 3 points, vs 5000, 5500, & 6000 for that cam) I updated the tables and charts. Let me know if you see anything else funny.
Thanks for that catch. As it turns out I was off 500 RPM on the 150 line. (Was using 5500, 6000, & 6500 for the last 3 points, vs 5000, 5500, & 6000 for that cam) I updated the tables and charts. Let me know if you see anything else funny.
I think you did the same thing when you overlaid the lines.
mmm sorry but your 3500 columns aren't quite lining up either, rounding maybe isn't helping.
It's difficult to see lots of lines on top of each other but if you really wanted to compare then best sticking with graphs because they show the foibles instead of just a few points tbh.
Last edited by Gordon61; 03-24-2018 at 03:57 PM.
Reason: added clarifier
Hey folks, I hope I'm not overstepping any boundaries here... I just like data.
Similar to the charts I posted, these aren't scientific because I don't have the actual numbers - This is just from what I could pull of the charts $tone posted...
Below, see "heat maps" of the torque and HP figures from the cams as I see them. Darker (green) is "better", or atleast comparatively higher in each rpm range.
IMHO Guessing at the numbers only muddies the waters and someone who reads these post may take them for being correct. I think it best to leave it to those who have the real data to post.
I think you did the same thing when you overlaid the lines.
Yeah, I can't edit the old post anymore. I'll just post the updated ones here.
@Gordon, I checked the points at 3500 again, I'm not sure I see what you're pointing out. I think they're pretty close as I'm reading them, but as stated before, I don't have the actual data so there is definitely rounding errors in here (at a minimum). Just trying to help the conversation.
The way I look at these numbers, all of the cams seem like pretty great choices over stock and really we're talking about single-digit-percentage variances between all of them in any given RPM band.
That said, the TTS 100 charts great in the low RPMs, the TTS 150 puts up top marks in the upper RPMs, and the RedShift leads the way across the middle of the power band, while the CR460 and 22x are right there with any of them across the full range.
Last edited by brycenator; 03-24-2018 at 07:15 PM.
03-24-2018, 12:26 PM
