M8 107 with Zippers 468 cam
Stellar HDF Member
Joined: Jul 2013
Posts: 2,341
Likes: 982
From: Trinity NC
South107 - check out the S&S Grand Nationals. They have a nice idle, sound aggressive while accelerating but no drown at highway speeds. I have hearing damage in my right ear and cannot ride with certain muffler tones. I’ve had Rinehart 4”, V&H Monster Rounds, Fuel Moto Hi Rollers and the S&S full exhaust with 4.5” mufflers like the MK45s but wth high flow cats in them. The MK45s are slightly deeper than the Grand Nationals but both sould offer you a nice sound with little to no highway drone. I’m currently running the GNs and plan to keep them when I upgrade to the same 468 cam you have. There are a couple of sound clips on the S&S website and a lot of YouTube videos but I can tell you from experience they offer little to no drone at highway speeds and both offer removable DB reducers if you decide you want them a little louder.
Good Luck
Good Luck
Tourer
Joined: Feb 2017
Posts: 369
Likes: 130
From: Maryland
Thank you for pointing out what I am and what I’ve never done.
I hit a deer at 60 mph and sustained a head injury.
My issue is not the noise, Its a specific tone that’s causing ringing in my ears now since my upgrade. Never posted b4 and got a lot of helpful advice from knowledgeable people.
I hit a deer at 60 mph and sustained a head injury.
My issue is not the noise, Its a specific tone that’s causing ringing in my ears now since my upgrade. Never posted b4 and got a lot of helpful advice from knowledgeable people.
Last edited by Firebolter; Mar 19, 2019 at 11:47 AM.
Thread Starter
|
Intermediate
Joined: Nov 2018
Posts: 26
Likes: 13
From: Nevada
In defense of the .468 cam, that IS the most powerful plug/play currently available cam for an M8, that we have tuned/tested here.
A true home run, in a 107", and then turns into a card-carrying monster if the cylinders are bored to accept 4.125" pistons, bringing the swept volume to 117".....tuned correctly.
Scott
A true home run, in a 107", and then turns into a card-carrying monster if the cylinders are bored to accept 4.125" pistons, bringing the swept volume to 117".....tuned correctly.
Scott
I removed the FP3 and bought the ThinderMax tuner that I was told I needed for this cam to work properly with my set up. After that, Im then told I need more back pressure for the M8 so I buy monster rounds that creat more back pressure. The bike defiantly ran better once those were installed but Im still dealing with a low rpm hesitation/miss riding thru town. At highway speeds the bike is solid and runs excellent. IThe performance so far is nothing to rave about in my experience. Maybe its all in the tuning. I was told its possibly mechanical so I rechecked the timing and re did the push rod adjustment just so I can tell Zippers and thindermax its not mechanical.
if you have any suggestions Im listening, and would really appreciate any advice you have. I have talked to TMax support daily since I installed the tuner.
Aaron.
I did a lot of research going into the stage 2 and found that the z-468 is what I was lookin for. Unfortunately i have not found it to be slightly more then the stock cam. Idk what the issue is.
I removed the FP3 and bought the ThinderMax tuner that I was told I needed for this cam to work properly with my set up. After that, Im then told I need more back pressure for the M8 so I buy monster rounds that creat more back pressure. The bike defiantly ran better once those were installed but Im still dealing with a low rpm hesitation/miss riding thru town. At highway speeds the bike is solid and runs excellent. IThe performance so far is nothing to rave about in my experience. Maybe its all in the tuning. I was told its possibly mechanical so I rechecked the timing and re did the push rod adjustment just so I can tell Zippers and thindermax its not mechanical.
if you have any suggestions Im listening, and would really appreciate any advice you have. I have talked to TMax support daily since I installed the tuner.
Aaron.
I removed the FP3 and bought the ThinderMax tuner that I was told I needed for this cam to work properly with my set up. After that, Im then told I need more back pressure for the M8 so I buy monster rounds that creat more back pressure. The bike defiantly ran better once those were installed but Im still dealing with a low rpm hesitation/miss riding thru town. At highway speeds the bike is solid and runs excellent. IThe performance so far is nothing to rave about in my experience. Maybe its all in the tuning. I was told its possibly mechanical so I rechecked the timing and re did the push rod adjustment just so I can tell Zippers and thindermax its not mechanical.
if you have any suggestions Im listening, and would really appreciate any advice you have. I have talked to TMax support daily since I installed the tuner.
Aaron.
1st Gear
Joined: Jun 2018
Posts: 5
Likes: 0
From: PA
Bose
South107 - check out the S&S Grand Nationals. They have a nice idle, sound aggressive while accelerating but no drown at highway speeds. I have hearing damage in my right ear and cannot ride with certain muffler tones. Ive had Rinehart 4, V&H Monster Rounds, Fuel Moto Hi Rollers and the S&S full exhaust with 4.5 mufflers like the MK45s but wth high flow cats in them. The MK45s are slightly deeper than the Grand Nationals but both sould offer you a nice sound with little to no highway drone. Im currently running the GNs and plan to keep them when I upgrade to the same 468 cam you have. There are a couple of sound clips on the S&S website and a lot of YouTube videos but I can tell you from experience they offer little to no drone at highway speeds and both offer removable DB reducers if you decide you want them a little louder.
Good Luck
Good Luck
Tourer
Joined: Aug 2012
Posts: 330
Likes: 16
From: Colorado
I did a lot of research going into the stage 2 and found that the z-468 is what I was lookin for. Unfortunately i have not found it to be slightly more then the stock cam. Idk what the issue is.
I removed the FP3 and bought the ThinderMax tuner that I was told I needed for this cam to work properly with my set up. After that, Im then told I need more back pressure for the M8 so I buy monster rounds that creat more back pressure. The bike defiantly ran better once those were installed but Im still dealing with a low rpm hesitation/miss riding thru town. At highway speeds the bike is solid and runs excellent. IThe performance so far is nothing to rave about in my experience. Maybe its all in the tuning. I was told its possibly mechanical so I rechecked the timing and re did the push rod adjustment just so I can tell Zippers and thindermax its not mechanical.
if you have any suggestions Im listening, and would really appreciate any advice you have. I have talked to TMax support daily since I installed the tuner.
Aaron.
I removed the FP3 and bought the ThinderMax tuner that I was told I needed for this cam to work properly with my set up. After that, Im then told I need more back pressure for the M8 so I buy monster rounds that creat more back pressure. The bike defiantly ran better once those were installed but Im still dealing with a low rpm hesitation/miss riding thru town. At highway speeds the bike is solid and runs excellent. IThe performance so far is nothing to rave about in my experience. Maybe its all in the tuning. I was told its possibly mechanical so I rechecked the timing and re did the push rod adjustment just so I can tell Zippers and thindermax its not mechanical.
if you have any suggestions Im listening, and would really appreciate any advice you have. I have talked to TMax support daily since I installed the tuner.
Aaron.
Road Captain
Joined: Feb 2020
Posts: 615
Likes: 209
From: California
I have the D&D Fat Cat 2-1 it can be really loud but has no drone ,I sold the V&H 2-2 because the drone was terable , I'm running the FP3 with SE8-447 cam and the bike is crazy fast with torque , Just ordered the Pro Kit for wide band Tunning.
Road Warrior
Joined: Mar 2007
Posts: 1,396
Likes: 146
From:
Most guys I know and for me personally, have found adding a high performance cam to a Harley engine seems to make the bike substantially louder even with the same exhaust as before. It's just the nature of the beast. I run a 468 in my '17 RGS with a D&D Billet cat. The Red Shift 468 was developed with the D&D exhaust so that is a good choice for best performance. Unfortunately it's a bad choice for someone who is sensitive to noise. My bike is Dyno tuned with a Powervision. It's fast and it's loud when the throttle is rolled on. Going down the highway it's not too bad for me. I can hear my stereo just fine around 70 mph. Not so much after that. Would ear plugs make it tolerable? I'm afraid if you are really that noise sensitive you might be better off with a stock motor and stock exhaust. These M8s aren't slouches stock and are pretty quiet.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Seasoned HDF Member
Joined: Jul 2013
Posts: 11,185
Likes: 7,961
From: In my head
Honestly (and this goes for every engine HD has ever made) just changing the cam gives mediocre results. Yea, it's a bit faster and the torque is there but nothing compares to head work (porting) boring of the cylinders and piston swaps ie compression ratios, throttle bodies, injectors, its when you combine all those items when you get what you're expecting. A simple cam swap is basically a "stage 2" and there's not much meat on the bones, at least not for me.