noob101

One of my buddys dad owns a gto(year unknown) and my friend told me it came with a dana rear end. I thought they all came with irs.. is he just blowing smoke out of his ***

DeepBlueZ

that's not TOTALLY inaccurate. they are all IRS but the center section is based on a Dana design.

Rob

iTrader: (6)

It is IRS. The center section was a Borg Warner design that DANA bought from my understanding. Almost a updated 3rd gen 9 bolt rear.

jamesSS

so how much power can the rear end take before we should do something to beef it up?

00ws6spd

First of all,add royal purple 85w-140 to any stock rear end,as the factory fluid sucks.It will quiet it down and allow it take alittle more abuse.
A stock rear end has been into the 11's before,but 12's consistently.So a bolt-on car with a cam possible and you should be okay.

sweetness

you guys got IRS?? I got a solid with mine ( dealer option) yea right !! lol j/k

jamesSS

so all i need is fluid? ive heard something about the drive shafts being alittle weak. is there anything to that rumor? i plan on running a 150 shot with full exhaust and sticky tires.

to the original poster, sorry i jacked your thread.

00ws6spd

The driveshafts are definitely not weak.The driveshaft and or diff will go before these,and that's not until you hit early 12's consistently.I wouldn't worry at all.

Rob

iTrader: (6)

If its an A4, you can go 9's with it as its already been done. M6 cars have been in the 11's with them. I'm running low 12's and no problems so far...knock on wood.

MrGoat

I have seen a twisted drive shaft on a relatively stock car, he must have been dropping the clutch pretty hard.

svede1212

iTrader: (3)

i twisted and snapped mine in two at the track. i was putting down about 400 RWHP with really bad wheel hop. it snapped within a second or two right after launch. at the time i only had drag bags and DRs. i have a one piece DiffTechnics aluminum shaft now. i am currently upgrading my rear suspension with all new SuperPro bushings, Koni shocks, 3.91s with spring kit and a Harrop cover. i also widened my stock wheels to 9". with increased power comes the challenge of putting it down. my engine power quest has been temporarily sidetracked with the suspension stuff. i had been told before on other launches that they could see my wheels moving back and forth in the wheel wells. after taking them apart i could see that the control arm bushings are junk with large voids in them causing a lot of lateral movement. the IRS isn't a drag drive train and it needs some upgrades to make it better IMHO

DeepBlueZ

how is your car on the street with the one piece DS??? any significant noises or vibrations?

svede1212

iTrader: (3)

you hear the drain train more than the stocker and there is a very slight vibration at about 45 and 90 MPH with mine. that will probably shift lower as that was with my old gears. my rear end's apart now and i noticed that a small balance weight is off of it. i may have to get it rebalanced. as loud as my car is it's all buried in the other sounds anyways. it also has a different "feel" when you drive it. the engine feels more connected to the wheels. when you step on it it goes. you're not getting that cushion lag that made you feel like you were being shot out of a slingshot that you had with the rubber couplers.

DeepBlueZ

thanks.