Full length 1-piece driveshaft owners - chime in

09jsw · Jan 11, 2017

The manual shafts cost a lot more.

Dominant1 · Jan 11, 2017

Stage 3 motorsports has the cheapest price for dynotech driveshafts with free shipping!

http://www.stage3motorsports.com/Dynotech-Driveshafts.html

SlowEldiablo · Jan 11, 2017

Thank you everyone for the info.

wildcatgoal · Jan 11, 2017

09jsw said:
The manual shafts cost a lot more.

Why I do not know... makes me want to cry. :doh:

Unadilla248 · Jan 11, 2017

SlowEldiablo said:
Sorry to pop in but where is everyone getting the Dynotech aluminum driveshafts for the GT for $500-$600? I can only find them for about a $1000.

Same here and why are the auto shafts cheaper.

wildcatgoal · Jan 11, 2017

I HOPE it's because they have to do a lot less balancing to get them to not cause NVH. But I suspect it's because M/T drivers want driveshafts more than auto drivers and therefore they can charge more for them. I local driveshaft shop quoted me $560 to custom make one for my car but it would be balanced only to 6500 rpm. They said that would be totally fine and frankly I believe them. The $800-$1100 pricetag of these includes R&D shipping, warehousing, and mad profit margin.

SlowEldiablo · Jan 11, 2017

wildcatgoal said:
I HOPE it's because they have to do a lot less balancing to get them to not cause NVH. But I suspect it's because M/T drivers want driveshafts more than auto drivers and therefore they can charge more for them. I local driveshaft shop quoted me $560 to custom make one for my car but it would be balanced only to 6500 rpm. They said that would be totally fine and frankly I believe them. The $800-$1100 pricetag of these includes R&D shipping, warehousing, and mad profit margin.

Very true. Supply and demand. I've built plenty of custom cars, trucks and Jeeps over the years. I don't have access to a custom shop, I agree, R&D does add to the bottom line. I'll accept a higher price tag. But it's always good to shop and ask around. Saving a little here and there and stretching your dollar always helps to further a build.

Cobra Jet · Jan 13, 2017

Here's another full length DS option for the MT82 S550:
https://gforce1320.com/product/mustang-s550-2015-3-5-aluminum-driveshaft-manual/

lwnslw · Jan 16, 2017

Cobra Jet said:
Here's another full length DS option for the MT82 S550:
https://gforce1320.com/product/mustang-s550-2015-3-5-aluminum-driveshaft-manual/

Looks identical to the Shaftmasters at a $125 price increase..:shrug:

armykyle1 [HACKED ACCOUNT · Jan 16, 2017

I have a shaftmasters aluminum. I have annoying vibration around 50 with the stock driveshaft. Which was exaggerated with the aluminum one. I also had a vibration right at 80mph with the aluminum driveshaft, which doesn't stop until 95-100. The extra response is great. The car shifted my better. I did not try indexing the driveshaft. I've since pulled it and will be dropping it off at a local race shop to check the balance. I have a feeling either the pinion angle is messed up or the rearend is off center. If you're racing a fair amount. It's definitely worth it.

09jsw · Jan 17, 2017

armykyle1 said:
I have a shaftmasters aluminum. I have annoying vibration around 50 with the stock driveshaft. Which was exaggerated with the aluminum one. I also had a vibration right at 80mph with the aluminum driveshaft, which doesn't stop until 95-100. The extra response is great. The car shifted my better. I did not try indexing the driveshaft. I've since pulled it and will be dropping it off at a local race shop to check the balance. I have a feeling either the pinion angle is messed up or the rearend is off center. If you're racing a fair amount. It's definitely worth it.

I have the exact issue and I found my subframe looks to be off centered slightly from when a shop did the suspension install.
I'm hoping to try to move that back at some point.

Dominant1 · Jan 17, 2017

armykyle1 said:
I have a shaftmasters aluminum. I have annoying vibration around 50 with the stock driveshaft. Which was exaggerated with the aluminum one. I also had a vibration right at 80mph with the aluminum driveshaft, which doesn't stop until 95-100. The extra response is great. The car shifted my better. I did not try indexing the driveshaft. I've since pulled it and will be dropping it off at a local race shop to check the balance. I have a feeling either the pinion angle is messed up or the rearend is off center. If you're racing a fair amount. It's definitely worth it.

After you get gour car back from the shop you should do the indexing just to see if that fixes it. If it doesn't then you can rule that out! Its a known fact that some of these cars come with mis aligned rear ends even the s-197's did. If thats the case then the steeda subframe alignment kit will fix that. And to make sure it stays there steeda subframe connectors are a must. I was lucky to find out my rear is perfectly aligned from the factory so i never used the alignment kit. But i do have the subframe connectors, because I've also read posts about the rear moving after so many miles! You can also tell that your rear is outta wack when you go to install the subframe connectors and the bolt holes dont line up! You can rule pinion angle out because the diff is mounted to the irs frame so no matter what you do with your suspension it doesn't affect it!

jhatley7 · Jan 17, 2017

09jsw said:
I have an aluminum one, while I like how I could feel the reduced mass I don't think I'd do it all over again. Nvh sucks. Don't believe people telling you "theirs" didn't get any additional nvh. They all do add nvh, some people are just oblivious to it and not as sensitive. The nvh comes from a poor fixed stock s550 pinion angle from what I've been told by a few vendors.

I have the dss 4" aluminum
Only nvh I noticed is when putting into 1st the pop is louder. I also installed a twin disk. I also have bmr 005, vertical links, dss 1400hp shafts, off-road long tubes, corsa sports and Whipple so all of that ads nvh in their own way. I upgraded to be safe. Didn't want to be stranded at the track.

armykyle1 [HACKED ACCOUNT · Jan 17, 2017

Dominant1 said:
After you get gour car back from the shop you should do the indexing just to see if that fixes it. If it doesn't then you can rule that out! Its a known fact that some of these cars come with mis aligned rear ends even the s-197's did. If thats the case then the steeda subframe alignment kit will fix that. And to make sure it stays there steeda subframe connectors are a must. I was lucky to find out my rear is perfectly aligned from the factory so i never used the alignment kit. But i do have the subframe connectors, because I've also read posts about the rear moving after so many miles! You can also tell that your rear is outta wack when you go to install the subframe connectors and the bolt holes dont line up! You can rule pinion angle out because the diff is mounted to the irs frame so no matter what you do with your suspension it doesn't affect it!

I've got the cradle lock out kit and steeda irs locating kit. I'm not sure if it helps. I had already pulled the aluminum DS out. But wheel hop and tracking was greatly improved.

stoli · Jan 17, 2017

09jsw said:
I have an aluminum one, while I like how I could feel the reduced mass I don't think I'd do it all over again. Nvh sucks. Don't believe people telling you "theirs" didn't get any additional nvh. They all do add nvh, some people are just oblivious to it and not as sensitive. The nvh comes from a poor fixed stock s550 pinion angle from what I've been told by a few vendors.

I have a 1 piece DSS aluminum. When I first installed it I had horrendous vibrations above around 70mph - to the point I was going to remove it. Instead I removed the diff lockout kit I had installed and all vibration when away.

The only remaining nvh is possibly a little move 'thud' in 1st gear. That's it. Nothing once at speed.

Full length 1-piece driveshaft owners - chime in

09jsw

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Dominant1

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SlowEldiablo

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wildcatgoal

@sirboom_photography

Unadilla248

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wildcatgoal

@sirboom_photography

SlowEldiablo

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Cobra Jet

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lwnslw

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armykyle1 [HACKED ACCOUNT

Banned

09jsw

Well-Known Member

Dominant1

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jhatley7

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armykyle1 [HACKED ACCOUNT

Banned

stoli

Fat Guy Racing