[SlvrVee]

I had a local driveshaft shop install a one piece driveshaft for me three weeks ago and it works great with no vibrations at all. I wanted to make sure that it was vibration free before I posted, because I know in the past there was a little debate about using a one piece in the V. He “custom “ made it by doing a little Frankenstein work, using the part of the stock driveshaft that attaches to the diff and mating it to an old 3” shaft that he had laying around. After removing the diff end of the drive shaft he inserted a short piece of steel tubing and welded it. He then balanced this piece by itself and made sure it was true. This worked great because it was essentially the “old” driveshaft end going back into the diff so it was perfectly aligned. Pic 1 & 2 shows what I mean
I had two issues when it was first installed. I had a bad vibration that turned out to be that my tires were out of balance. Took it to Firestone and had them road force balanced and aligned now it’s smooth. The other issue was that under really hard acceleration and quick shifting the diff end of the driveshaft would flex and briefly touch the body. This only happened when shifting aggressively, so I called Max and picked up a CS diff bushing, problem solved no more flex. The car now drives so much better. Now when you shift it engages right away with a positive feel. As soon as you let go of the clutch the car moves. Plus no more clunking.

Pic 1 tube welded to old DS diff end

Pic 2 How it looks installed

Pic 3 Another View

Pic4 DS installed

 

[SlvrVee]

This is the Transmission end

 

[SlvrVee]

Very nice. How fast have you gone with the new shaft? How high have you rev'd the motor? Banged any gears yet? Any weird noises or harmonics on the highway?

I took it up to about 125 with no problems. I also pulled each gear i.e 1st to almost redline then let it coast and listened and felt for any noise or vibes. Did the same for 2nd, 3rd and so on without anything. I also drove in 3rd for a bit on the hway, then 4th and 5th, again nice and smooth (with the exception of a very slight vibe that I get due to my UUC motor and trany mounts)

I got a great break on the price because on the DS because it was an old shaft from some unknown vehicle that they had laying around so I just paid for the u-joints the fab work for the diff end of the shaft and labor. Total was about $350- $400.

They had wanted to do a one piece aluminum shaft, but I decided against it because to safely handle 500 to 600 rhp it would have be fabbed from 4" aluminum, which would require the support where the center bearing hangs to be banged in a little to provide good clearance. Since I wasn't too sure if this was gonna work I didn't want to mess up that support in case I had to go back with a stock DS. Matt the guy who put this ds together said that I could use 3.5 alum and it would still support high hp, but the 4" would have been for insurance. Right now I'm at 475 rwhp and 457 tq (maggie + cams) in a couple of weeks will be heads and the 90mm intake on the maggie, so I wanted a little insurance.

Yesterday I had a set of Dunlop Direzza Z1 mounted an all I can say is wow. With the new DS, the Dunlops and the level 4 Monster clutch this car hooks up like a beast. Chris looks I'm gonna need a set of them new heavy duty axles soon....

 

[SlvrVee]

JUST ONE MORE PIC

 

[SlvrVee]

Super shafts are you the one that made the driveshaft for the O.P. ?

Yes Supershafts fabbed my DS. Taking the car to the dyno this Friday (TTP ) . Will post the numbers and video.