Gears & Axles - Can a stock rear-end handle Drag Radials
11-25-2002, 09:52 AM
I do not have much done to the car as of now, and after 4 runs I am running 13.4 @ 107.32. Mods are exhaust cut-out, 3:73's, and K&N.
I am wondering if the stock rear will hold up with DR's, and at what point(e.t. or RWHP) will I have to change over to a 12-bolt.
11-25-2002, 11:11 AM
If the car is an A4 you will be fine. M6 should be alright as long as you are doing any hard clutch drops. The autos are easier on the 10 bolt because you can load the rear at the track as opposed to dumping the clutch.
11-25-2002, 11:12 AM
excuse me. M6 should be alright as long as you are not doing any clutch drops.
11-28-2002, 05:43 AM
I've read of some one running low 11 or high 10 on the stock 3.42s. I now have 4.10s in mine and read a lot on how they break easy then some on how they will hold up for 10s not that I'll ever get that fast. I have a 10 bolt.
11-29-2002, 12:03 AM
it seems to be hit or miss with this rear. ive heard of 10 second nitrous cars with the stock 10 bolt but then again i know a guy who broke his with a 13 second lt1 on drag radials. you might want to upgrade for piece of mind but if it aint broke dont fix it.
11-29-2002, 10:19 AM
I've been running ET Streets for a year with stock 10 bolt and 3.73's. No problems yet!
11-29-2002, 11:53 AM
what he said
11-30-2002, 10:04 AM
No offense to the last two guys, but your both a4's, its a night and day difference compared to m6's.
The problem with m6's and sticky tires is the shock that the entire drivetrain takes when lauching hard. Every gear/shaft must take up the slack before your tires move anywhere. This is what causes breakage.
To demonstrate how much slack there is in the drivetrain do this:
1. put the car on a level surface
2. put it in first gear and release the parking break (obviously leave the car off)
3. get out and push the car backwards till you feel it 'lock up'
4. now push the car forward and notice the distance the car moved without turning a single gear.... This is what kills your drivetrain parts. Its not the amount of power, but the sudden impact of it that does damage.
Automatics are able to torque brake the car to take up all this slack prior to launching. To give you an idea of what its like in an m6, take an a4 up to 4000 in neautral and then drop it into gear, makes you queasy huh. Same thing happens in an m6.
So to sum things up, if your an m6 and want to run drag radials, don't dump the clutch, rather, let it ride out and absorb some of the impact. Don't powershift either and you'll be fine, for a little while. <img border="0" alt="[devil]" title="" src="graemlins/gr_devil.gif" />
<small>[ November 30, 2002, 09:06 AM: Message edited by: The Alchemist ]</small>
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