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I have a 2019 Sport Glide with the Stage-2 torque cam (447), extreme ventilator intake and street cannon muffler...strong pull from idle to redline. I'm considering going to Stage-3 but don't know much about the SE498 cam. More horsepower is great, but I don't want to sacrifice performance and driveability off idle. I'm specifically avoiding Stage-4 because I've heard a lot of people comment that responsiveness suffers in lower rpm with Stage-4.
If you have experience with a Stage-3 upgrade to the M8 107, will you share whether you've been pleased with the performance in the lower half of the rpm range?
I have a 2019 Sport Glide with the Stage-2 torque cam (447), extreme ventilator intake and street cannon muffler...strong pull from idle to redline. I'm considering going to Stage-3 but don't know much about the SE498 cam. More horsepower is great, but I don't want to sacrifice performance and driveability off idle. I'm specifically avoiding Stage-4 because I've heard a lot of people comment that responsiveness suffers in lower rpm with Stage-4.
If you have experience with a Stage-3 upgrade to the M8 107, will you share whether you've been pleased with the performance in the lower half of the rpm range?
If you're going to remove the top end for more displacement, I would go with this "low compression" kit from Fuel Moto. You can use your torque cam or another similar cam with it. Fuel Moto can also provide you a tuner, larger fuel injectors, and an engine calibration file. Give them a call. https://www.fuelmotousa.com/i-238981...7-engines.html
If you're going to remove the top end for more displacement, I would go with this "low compression" kit from Fuel Moto. You can use your torque cam or another similar cam with it.
Are you sure about that? I was told it was a no-go with my SE-447 cam, IIRC they said the cylinder compression would be too high.
I have the stage 3 in my Sport Glide. Been very pleased. I chose it over the stage 4 for the fact that I did not want a horsepower bias setup but rather something that was a good balance of both. By MOCOs charts everything above 2,500 rpms has more torque than the stock 107.
One caveat is that after ordering the stage 3 I also decided to improve the stock gearing. I changed it from a 2.79 final drive ratio to a 3.15 like many softails were prior to EPA intervention. That's 13 percent more at the wheel torque IE mechanical advantage or acceleration rate in each gear. So it feels to have more torque off idle but really part of that is attributed to the gear change. Stock to stage 4 would benefit from the gear change IMO but stage 4 setups would benefit the most for the fact they would recapture if you will some of that low rpm torquey responsiveness or low rpm rideability. Would I still like the lower half of the rpm range without the gear change?.. Yep.
Last edited by VernDiesel; Feb 6, 2020 at 10:50 PM.
Are you sure about that? I was told it was a no-go with my SE-447 cam, IIRC they said the cylinder compression would be too high.
The stock cam has an intake close angle of 1 deg ABDC with a static compression ratio of 10.5 (114 engine).
The 447 cam has an intake close angle of 17 deg ABDC so I think it would work OK at 10.75.
Fuel Moto has built several with the Wood WM8-22X cam that has an intake close angle of 22 deg ABDC.
Confirmed on Hulkss, I picked up my 128" bike using nearly the same set-up as his except for running true duals. No low speed issues. Except I added firmer AIM clutch springs that are stiff that will take some getting used to.
No, I have a Rekluse clutch pack (not the auto-clutch). It holds over 150 ft-lbs with the stock springs. I am actually going to put in springs that are softer than stock.
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Stage-3 Driveability
