SWAPING REAR!!
Thread Starter
Staging Lane
Joined: Jan 2002
Posts: 55
Likes: 0
From: Chatham
SWAPING REAR!! OK I belive I have 2:73 or 3:23 I am not 100% sure. But I am changing them to 4:10's but am I able to just swap the gears or do I have to do anything else to the rear. Is the computer going to be a big deal on this or will it have to be programmed for the 4:10's. Thanks for all the help everyone!!!
<small>[ April 08, 2002, 10:03 AM: Message edited by: NED4SPD ]</small>
<small>[ April 08, 2002, 10:03 AM: Message edited by: NED4SPD ]</small>
On The Tree
Joined: Apr 2002
Posts: 103
Likes: 0
From: Dallas,Tx
Re: SWAPING REAR!! 1998 LS1 A4 to my knowledge most of them came with 3:23's. I have heard of some with 2:73's though. One way to know is look at the codes inside the driver's side door. GU2 = 2:73, GU5 = 3:23. Mine came with 3:23's.
Launching!
Joined: Dec 2001
Posts: 250
Likes: 0
From: Indiana
Re: SWAPING REAR!! Well, you'll probably have to replace the stock paddle pin thing with the 2 piece from SLP. Also you'll most likely need to do some shimming etc... As for the computer, you'll either have t have it reprogrammed for the new gears, or you can buy the HPP3 and do it there, or you can buy a speedo corrector from one of the sponsors here, otherwise you'll be putting miles on the odometer faster then you're actually putting miles on the car, and the speedo will make you think you're really flying when you're not <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Re: SWAPING REAR!! Yes ABSOLUTELY you will need to change the computer when upgrading the gears to 4.10 or 3.73.
Not sure what your mod level is but for most A4's 4.10's is a steep gear. You would get more performance gain from a Converter.
Not sure what your mod level is but for most A4's 4.10's is a steep gear. You would get more performance gain from a Converter.
Re: SWAPING REAR!! Not sure how many answers your looking for.. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />
Now after finding your signature in another post...
With the mods shown (blower & Y3000) I would not go with 4.10.. unless you planning to run some serious RPMS... infact I would stick with the 3.23's and look at getting a PY3400E.
Now after finding your signature in another post...
With the mods shown (blower & Y3000) I would not go with 4.10.. unless you planning to run some serious RPMS... infact I would stick with the 3.23's and look at getting a PY3400E.
Thread Starter
Staging Lane
Joined: Jan 2002
Posts: 55
Likes: 0
From: Chatham
Re: SWAPING REAR!! Hey thanks for the replies .. and sorry for the confusion WILUWAX.. but i don't have a blower yet.. i just wnated gears for now till i saved up for a good rear end for drag racing but for auto crossing as well. So any ideas on which ones to get and if it is even possible to change my rear end to 4 10s right now since i have 2:73s
Trending Topics
Re: SWAPING REAR!! If you plan on autocrossing too.. then you need to talk with Patrick G. He's done a little of that with an Auto car before.. plus he know's a little about converters <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
I'm betting he'll suggest a PY-3400E converter and 3.73's... Or maybe a ST-3500.
I'm betting he'll suggest a PY-3400E converter and 3.73's... Or maybe a ST-3500.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Re: SWAPING REAR!! Wilwaxu is right, 4.10 gears are a waste unless all you plan on doing is running 1/4 mile with huge tires 24/7. First gear is useless on radials (even BFG D/Rs and Nittos) with 4.10s and marginal with 3.73s.
The absolute BEST gears for autocrossing are the 3.23 gears. Why? Because you can do nearly the entire course in 2nd gear. With a good converter like a Yank Super Thruster 3500, you can 60' like a raped ape, power out of slow turns in 2nd gear on the autocross, and still make excellent top-end efficiency without a lot of excessive heat. 2nd gear (with 3.23 gears) is good for 35-90 mph, making it effective for the majority of autocross speeds.
With 4.10 gears, your 2nd gear will only be good from 25-70 mph...meaning you'll spend a lot of time shifting into the bottom of 3rd gear. If I were running on top of 2nd gear and your were in the bottom of 3rd, I'd probably pass you on the autocross.
In drag racing, I've found that gears only account for a maximum of 1 tenth gain once you have a really good converter. If you're currently running the Yank 3000, you'd do much faster with a ST3500 and the gears you have than a switch to 4.10 gears and the Y3000.
The absolute BEST gears for autocrossing are the 3.23 gears. Why? Because you can do nearly the entire course in 2nd gear. With a good converter like a Yank Super Thruster 3500, you can 60' like a raped ape, power out of slow turns in 2nd gear on the autocross, and still make excellent top-end efficiency without a lot of excessive heat. 2nd gear (with 3.23 gears) is good for 35-90 mph, making it effective for the majority of autocross speeds.
With 4.10 gears, your 2nd gear will only be good from 25-70 mph...meaning you'll spend a lot of time shifting into the bottom of 3rd gear. If I were running on top of 2nd gear and your were in the bottom of 3rd, I'd probably pass you on the autocross.
In drag racing, I've found that gears only account for a maximum of 1 tenth gain once you have a really good converter. If you're currently running the Yank 3000, you'd do much faster with a ST3500 and the gears you have than a switch to 4.10 gears and the Y3000.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.