A6 Rear End Upgrade
Thread Starter
Pro
Joined: May 2004
Posts: 532
Likes: 46
From: Tucson, AZ
A6 Rear End Upgrade
All,
Been out of the game for a little while. I'm looking to upgrade the rear end gearing in my 07 A6 at the same time as I install a higher stall converter. What companies currently manufacture aftermarket 3.15 rear ends? I used to have a DTE rear in my C5 but I can't find any trace of them anymore.
Tommy
Been out of the game for a little while. I'm looking to upgrade the rear end gearing in my 07 A6 at the same time as I install a higher stall converter. What companies currently manufacture aftermarket 3.15 rear ends? I used to have a DTE rear in my C5 but I can't find any trace of them anymore.
Tommy
Melting Slicks
Joined: Apr 2012
Posts: 2,299
Likes: 25
Melting Slicks
Joined: Jun 2006
Posts: 2,497
Likes: 261
From: Miami Florida
One out of a ZO6 or a ZR1 bolts rite up and gives you the rite gears, if you get 3.15 you'll have a good improvement but a 3.42 will be just great. A low miles diff is best or get one out RPM they are just great.I went with the Yank 3400 power adder but is too tight even with over 500whp, a 3600 of same would be perfect.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
DTE is now sold under the Hooosier Performance brand:
http://shop.hoosierpe.com/C6-HPE-Dif...ckages_c52.htm
I have the Z06 diff with 3.42s, which I bought new from ZIP. If I had to do it over again, I would go with an RPM or DTE with 3.15s and the Quaife diff. I personally find that, especially with boost and the 3600 FTI, first gear is practically useless to me now, even with drag radials on the car full time.
It looks to me that RPM offers better pricing on their A6 diffs though.
http://shop.hoosierpe.com/C6-HPE-Dif...ckages_c52.htm
I have the Z06 diff with 3.42s, which I bought new from ZIP. If I had to do it over again, I would go with an RPM or DTE with 3.15s and the Quaife diff. I personally find that, especially with boost and the 3600 FTI, first gear is practically useless to me now, even with drag radials on the car full time.
It looks to me that RPM offers better pricing on their A6 diffs though.
Last edited by CI GS; Dec 23, 2016 at 09:49 AM.
Drifting
Joined: Apr 2000
Posts: 1,442
Likes: 209
From: Lake Mary Florida
DTE is now sold under the Hooosier Performance brand:
http://shop.hoosierpe.com/C6-HPE-Dif...ckages_c52.htm
I have the Z06 diff with 3.42s, which I bought new from ZIP. If I had to do it over again, I would go with an RPM or DTE with 3.15s and the Quaife diff. I personally find that, especially with boost and the 3600 FTI, first gear is practically useless to me now, even with drag radials on the car full time.
It looks to me that RPM offers better pricing on their A6 diffs though.
http://shop.hoosierpe.com/C6-HPE-Dif...ckages_c52.htm
I have the Z06 diff with 3.42s, which I bought new from ZIP. If I had to do it over again, I would go with an RPM or DTE with 3.15s and the Quaife diff. I personally find that, especially with boost and the 3600 FTI, first gear is practically useless to me now, even with drag radials on the car full time.
It looks to me that RPM offers better pricing on their A6 diffs though.
BIGMAC
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
At that power level, I'm going to assume that you're a drive it during the week, track it on weekends kind of guy.
IIRC you're running a centri setup correct?
In that case, I would suggest something similar to the triple disc FTI 3600 I'm running or a Yank PAS 3800. I'm not sure if Yank offers the PAS in triple disc, but you can talk to Dave Meyers @ Yank and maybe he can build you something specific for your setup. That's your best bet anyhow. Great guy to deal with and very knowledgeable.
Drifting
Joined: Apr 2000
Posts: 1,442
Likes: 209
From: Lake Mary Florida
It depends on your torque curve and how much starting-off/low speed slip you are willing to put up with to gain that last bit of ET.
At that power level, I'm going to assume that you're a drive it during the week, track it on weekends kind of guy.
IIRC you're running a centri setup correct?
In that case, I would suggest something similar to the triple disc FTI 3600 I'm running or a Yank PAS 3800. I'm not sure if Yank offers the PAS in triple disc, but you can talk to Dave Meyers @ Yank and maybe he can build you something specific for your setup. That's your best bet anyhow. Great guy to deal with and very knowledgeable.
At that power level, I'm going to assume that you're a drive it during the week, track it on weekends kind of guy.
IIRC you're running a centri setup correct?
In that case, I would suggest something similar to the triple disc FTI 3600 I'm running or a Yank PAS 3800. I'm not sure if Yank offers the PAS in triple disc, but you can talk to Dave Meyers @ Yank and maybe he can build you something specific for your setup. That's your best bet anyhow. Great guy to deal with and very knowledgeable.
BIGMAC
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Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
All,
Been out of the game for a little while. I'm looking to upgrade the rear end gearing in my 07 A6 at the same time as I install a higher stall converter. What companies currently manufacture aftermarket 3.15 rear ends? I used to have a DTE rear in my C5 but I can't find any trace of them anymore.
Tommy
Been out of the game for a little while. I'm looking to upgrade the rear end gearing in my 07 A6 at the same time as I install a higher stall converter. What companies currently manufacture aftermarket 3.15 rear ends? I used to have a DTE rear in my C5 but I can't find any trace of them anymore.
Tommy
So lay it out front.
Thread Starter
Pro
Joined: May 2004
Posts: 532
Likes: 46
From: Tucson, AZ
I assume the '06 is gone and replaced by the '07. Since you don't indicate what you plan to do with the car and what you've already done to it, just arbitrarily taking a guess really isn't appropriate. Telling you what I have has no value if you only want something for local street use. Likewise, for a dedicated drag car.
So lay it out front.
So lay it out front.
Tommy
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Just for reference, my '08 bolton w/2.56 and a 3200 Yank still retained stockish street manners and ran a best of 11.49. A swap to a 3600 required a trans cooler and rollbar, but managed low 11's locally and the street still felt fairly sharp. Then I went to a 4000 and the street leaves it a bit short of happiness, but 10's at the track make up for that.
I do a lot of highway (140K so far), which is one reason why I retained the 2.56. The only other choice would have been a 3.42. I could either finish the quarter at the high end of 3rd or 4th.
I do a lot of highway (140K so far), which is one reason why I retained the 2.56. The only other choice would have been a 3.42. I could either finish the quarter at the high end of 3rd or 4th.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
DTE is now sold under the Hooosier Performance brand:
http://shop.hoosierpe.com/C6-HPE-Dif...ckages_c52.htm
I have the Z06 diff with 3.42s, which I bought new from ZIP. If I had to do it over again, I would go with an RPM or DTE with 3.15s and the Quaife diff. I personally find that, especially with boost and the 3600 FTI, first gear is practically useless to me now, even with drag radials on the car full time.
It looks to me that RPM offers better pricing on their A6 diffs though.
http://shop.hoosierpe.com/C6-HPE-Dif...ckages_c52.htm
I have the Z06 diff with 3.42s, which I bought new from ZIP. If I had to do it over again, I would go with an RPM or DTE with 3.15s and the Quaife diff. I personally find that, especially with boost and the 3600 FTI, first gear is practically useless to me now, even with drag radials on the car full time.
It looks to me that RPM offers better pricing on their A6 diffs though.
Thanks,Matt
Melting Slicks
Joined: Mar 2012
Posts: 2,074
Likes: 294
From: Texas
LG Motorsports is another option. Race proven.
https://www.lgmotorsports.com/g2-performance-diffs.html
https://www.lgmotorsports.com/g2-performance-diffs.html
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
LG Motorsports is another option. Race proven.
https://www.lgmotorsports.com/g2-performance-diffs.html
https://www.lgmotorsports.com/g2-performance-diffs.html
Thanks,Matt
Melting Slicks
Joined: Jun 2006
Posts: 2,497
Likes: 261
From: Miami Florida
DTE is now sold under the Hooosier Performance brand:
http://shop.hoosierpe.com/C6-HPE-Dif...ckages_c52.htm
I have the Z06 diff with 3.42s, which I bought new from ZIP. If I had to do it over again, I would go with an RPM or DTE with 3.15s and the Quaife diff. I personally find that, especially with boost and the 3600 FTI, first gear is practically useless to me now, even with drag radials on the car full time.
It looks to me that RPM offers better pricing on their A6 diffs though.
http://shop.hoosierpe.com/C6-HPE-Dif...ckages_c52.htm
I have the Z06 diff with 3.42s, which I bought new from ZIP. If I had to do it over again, I would go with an RPM or DTE with 3.15s and the Quaife diff. I personally find that, especially with boost and the 3600 FTI, first gear is practically useless to me now, even with drag radials on the car full time.
It looks to me that RPM offers better pricing on their A6 diffs though.
I agree the 3.42 gears and A6 auto is for N-A cars boost likes to stay in gears longer but for N-A cars like the OP there are no better gears to be pair to the A6 then the 3.42 and 3600 converter the Yank PA 3400 is a little too tight and at 3800 on the loose side so a 3600 would perfect.
Thread Starter
Pro
Joined: May 2004
Posts: 532
Likes: 46
From: Tucson, AZ
Just for reference, my '08 bolton w/2.56 and a 3200 Yank still retained stockish street manners and ran a best of 11.49. A swap to a 3600 required a trans cooler and rollbar, but managed low 11's locally and the street still felt fairly sharp. Then I went to a 4000 and the street leaves it a bit short of happiness, but 10's at the track make up for that.
I do a lot of highway (140K so far), which is one reason why I retained the 2.56. The only other choice would have been a 3.42. I could either finish the quarter at the high end of 3rd or 4th.
I do a lot of highway (140K so far), which is one reason why I retained the 2.56. The only other choice would have been a 3.42. I could either finish the quarter at the high end of 3rd or 4th.
No cooler required with the 3200, even in Phoenix? Also, how did your tire requirements change as you increased the stall speeds?
Le Mans Master
Joined: Apr 2011
Posts: 7,821
Likes: 412
From: Montreal
St. Jude Donor '13
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I don't street race, nor drive aggressively in town. That doesn't mean I never play hard, just that I do it safely alone. I had already progressed to needing DR's at the track when I still had the stock converter, which I never use for the street.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
I put a cooler on mine before I did the converter. I doesn't hurt to help the ATF cool with an auxiliary cooler, especially in these cars where the ECTs tend to get over 210* during normal driving, which tends to keep the ATF at a similar temp, since the stock "cooler" is in the radiator. And most importantly of all, as Realcanuk said, make sure it's tuned properly.