What RPM is the FMS alum D/S balanced to?

[94-302-vert]

I am seriously considering this instead of rebuilding my steel one but I need to know how many RPM's this D/S is balanced to as I want to be able to turn clost to 4k RPM's at the D/S normal driving with no vibration.

Thanks,
Chris

 

[slytherin]

I don't know what it is rated for but I have run mine to redline in most gears, and up to 124mph and not felt a thing as far as bad vibes go. IMO get one you wont regret it.

 

[94-302-vert]

124 mph with 4:10's!!!

That's 6900 d/s RPM!!!!

Chris

 

[zenboy99]

I've never heard any issues with that driveshaft. Alot of guys in NMRA are using it.

 

[davins130]

do they make one for automatic transmissions or are they all the same (manual and automatic)?

 

[slytherin]

124 mph with 4:10's!!!

That's 6900 d/s RPM!!!!

Chris

124 is what the speedo said how far off it is, is another question. I do have the speedo gear installed to correct the difference for 4.10's. Thats why I say just get the FMS D/S. I went through all the BS trying not to buy one and to have the original rebalanced(it threw a weight) and to have new uni's put in it, it would have been twice as expensive than getting the FMS D/S at the time. I know it has gone up in price since then but IMO still worth it.

 

[94-302-vert]

Yeah... I am really really leaning towards getting it. But I gotta mention it to the wife first as it is not worth it otherwise... I'll try a few things first but it really sounds like your car did exactly what mine is doing...

Chris

 

[zenboy99]

I bought mine for $139 form www.buyfordmotorsport.com

 

[94-302-vert]

I just found out the FMS driveshaft is balanced at 3200 RPM (driveshaft RPM's).

I also remember that I believe most tires are balanced at 80 mph and they stay true much higher than that.

Just as a point of reference.

Chris

 

[hrspwrjunkie]

do they make one for automatic transmissions or are they all the same (manual and automatic)?

Yes, they are the same.

 

[WhiteDevil]

I just got my stock driveshaft back, from being dynamically balanced to 8,000rpm and having strong ass spicer U joints put in. Cost me 130 bucks, and now it looks all perdy and only took a day.

 

[Car Nut]

I got the FMS D/S last year and it sure smoothed things out. Sure looks pretty when the car is on a lift.

I've not heard of any problems with the FMS D/S in its operation. Sure, some people have an issue with other parts rubbing on it, but never heard of specific problems related directly to the D/S.

 

[HISSIN50]

an alum DS will also have a higher critical speed.