Has anyone got around to making a better driveshaft for the G8?

I have a few emails out on that subject right now.

There's a company called BMR Fabrication, they have done a lot of stuff for GTO's. Someone on this board emailed them and they are working on things for our car now.

Google BMR fabrication. The url will be right at the top of the page.

There's a company called BMR Fabrication, they have done a lot of stuff for GTO's. Someone on this board emailed them and they are working on things for our car now.

Google BMR fabrication. The url will be right at the top of the page.

That would be 1 of the companies.

Yep, last I heard BMR said soon.

Thanks guys!

I just sent them a follow-up email to check on progress. Will report what I get back.

One of them said it would be a one piece not two piece, which I would like, I think mine is out of balance now and need to take it to the dealer, thought at first it was the AFM but it's not.

Best option would be a single-piece carbon fiber, but that would be pricey! Usually those are about 4" diameter for the more powerful vehicles though. How much room is there for the driveshaft on a G8?

Best option would be a single-piece carbon fiber, but that would be pricey! Usually those are about 4" diameter for the more powerful vehicles though. How much room is there for the driveshaft on a G8?

A decent amount. The OE driveshaft is fairly skinny but it has a big u joint i the middle and the whole tunnel is big enough to contain something the size of that u joint. Some modifications to the exhaust may be necessary.

As of this morning, BMR says they are still developing G8 parts, not able to give ETA yet.

BMR makes fantastic stuff, we've used thier driveshaft (and other stuff) on a few GTO's here!

Anyone heard anything from BMR lately?

I left them an E-Mail about 2 weeks ago.

Why go to BMR, you need to call Inland empire driveshafts, they built the best shaft (aluminum) there is. If Jerry Bickel Race Cars that builds about 1/2 of the prostock race cars in the country uses them, so should you. I used one in my 93 Implala Clone after I did the air ride. I like BMR, I considered them for my adjustable control arms, I never did that, but, they had the best set up for the Impala/Caprice and most GM's including the Camaro. I also didn't realize the g8 was two piece.

Why go to BMR, you need to call Inland empire driveshafts, they built the best shaft (aluminum) there is. If Jerry Bickel Race Cars that builds about 1/2 of the prostock race cars in the country uses them, so should you. I used one in my 93 Implala Clone after I did the air ride. I like BMR, I considered them for my adjustable control arms, I never did that, but, they had the best set up for the Impala/Caprice and most GM's including the Camaro. I also didn't realize the g8 was two piece.

I seem to remember someone contacting them, maybe wreck? They needed the shaft to get the exact measurements. No one is/was willing to be without the car that long.

Hindsight says I should have sent mine in during the 6 week wait for body parts.

I just wanted to let you guys know there is a 2 piece heavy duty coming soon as well as a 1 piece and heavyduty axles..Im seeking sponcership and ill let you guys now as much as i can without crossing the line...

I ordered rear control arms from BMR they should be here this week . I'll post pic's of the install and difficulty . Hendrix -Engineering pm me about your fabrication of a 1 pc. driveshaft I'm interested in getting one.

Just to help a little here is some info from the GTO board:

Buying anything is sort of a risk. DiffTechs and DSS have been wonderful to deal with. In the rare circumstances where I have had problems they have been supportive and encouraging. I do business with them because I have come to trust them. BMR is legendary and their efforts are pretty much what got many of us to even consider buying the cars.

I just did a thread on my DS Vibration problem which is now cured. BTW Loboost and I both seem to have found the same solution. He directly replaced the shafts in his transmission with the 31 spline shaft and has no vibration issues and I found a severely damaged internal mainshaft and repaired it and now I can touch 170 with no hint of a vibration. I am confident I could go faster if I had the road to do it. The problem was in the tranny for me, not the driveshaft. It is exacerbated by higher revolutions of the 3.91 geared cars. What we don't know is if the single piece driveshaft caused the problem or the problem was already there and got worse when the single piece was installed. My gut tells me I had a problem with my tranny the day I drove off the lot but I cannot prove it.

I'm not really advocating one piece driveshafts. They are loud, transmit lots of noise into the cabin, handle very abruptly, ie not a smooth ride. They are a specific performance modification for someone that has a focused interest in the technology and is not expecting the same ride qualities of the OEM Propeller shafts. Just like GMM shifters you should not even consider one if you are looking for the quiet and trouble free ride your car had it when you bought it. My 200 mph shaft is rated at 55 mph greater than the OEM Propeller shaft and some tuners here will not remove the top speed limiter for that reason. I got a really good idiot lesson on that one.

As far as you would be able to tell you may already have the same issues with your transmission that those with single piece driveshafts discovered when they installed their systems that do not have the sound dampening effects and vibration reducing effects of the OEM Propeller shaft. You simply won't or may never know it until you add a single piece driveshaft. My car may have lasted another 100,000 miles with no problems using an OEM Propeller shaft but it would still have a problem, ultimately costing me my 5th and 6th gears. All this is just my opinon having worked through this for nearly a year and a half now.

Personally I ran down to 11.4 beating my car to death almost every weekend all stock from the DS to the rear. Here is another example:

Oh, and unlike the Mustang/GTO Shootout, where a very similar car with a very similar looking driver was kicked off the track for running too fast, no such problems here.BTW, my car is stock from the tranny tailshaft back. Stock gears, stock wheels, stock diff, stock shafts, etc. I do have drag bags.

He was running 10.6-10.8! On OEM equipment!

The point of sharing that long post is so too many of you don't blow money on a drive shaft before you get the power to even matter. To some of you the knowledge is already there and you are looking at building a foundation first. To that I understand!

We have realesed our hd 2 piece ds for testing and will be updating you guys when we have information.It looks astho it will be tuff to do the proper size 1 piece becase of clearance.We still will be looking into a 1 piece but we have had great results with our hd 2 piece in the gto as well as the mustang.

2 piece is going to be much less desirable.

edit- this was my first though but I'm now hearing people whose opinion I value saying the 2 piece may be better.

Update and pictures of the first prototype G8 driveshaft can be found in the following thread:

http://www.g8board.com/forums/showthread.php?t=8286

We've just completed testing on a single piece driveshaft from The Driveshaft Shop.

http://www.g8board.com/forums/showthread.php?p=262061#post262061

We are also working on driveshafts. One piece aluminum and carbon fiber. Our driveshafts will come with a billet rear pinion yoke similar to the one we make for the GTO.
I'll try and keep you guys in the loop.
SNL Performance will be testing some parts for us and will also be our main midwest dealer since they can offer installs at the SNL facility.