opinion-blackandwhite
Pontiac GTO Forum | GasTiresOil.com
More GTO info Billing Department News Department News Editor Obituaries Advertising Department Discussion Forum
Go Back   Pontiac GTO Forum | GasTiresOil.com > GTO Technical Forum > Tuning and Dyno

Sponsors
Affiliate Sites


Reply
 
Thread Tools Display Modes
Old 05-01-2013, 08:42 PM   #1
ROSEA CARPA
BAAHBYE
 
ROSEA CARPA's Avatar
 
Join Date: Nov 2009
Location: Summerville S.C.
Posts: 31
3.91's and a tune?

If I install a set of 3.91 rear gears on a A4 does it have to be tuned right away.... Correct me if I am wrong but all it should effect is the speedo?..
__________________
Fast and Cheap Isn't Reliable
Cheap and Reliable Isn't Fast
Reliable and Fast Isn't Cheap
ROSEA CARPA is offline   Reply With Quote
Old 05-02-2013, 10:04 PM   #2
vv8
Senior Member
 
vv8's Avatar
 
Join Date: Sep 2009
Posts: 184
correct, even a tune wont fix the speedo.
__________________
12.57@105.87
2004 GTO
LT Headers
U/D Pulley
160* Thermo
SLPLM2
Tune

New setup soon H/C TVS2300 ETC. 11.40@127.61
vv8 is offline   Reply With Quote
Old 05-02-2013, 10:15 PM   #3
ROSEA CARPA
BAAHBYE
 
ROSEA CARPA's Avatar
 
Join Date: Nov 2009
Location: Summerville S.C.
Posts: 31
The tune will fix the speedo but what I don't know is if the gears will throw anything off and hurt the transmission?
__________________
Fast and Cheap Isn't Reliable
Cheap and Reliable Isn't Fast
Reliable and Fast Isn't Cheap
ROSEA CARPA is offline   Reply With Quote
Old 05-03-2013, 11:48 PM   #4
2QWK4RU 06 GOAT
CONSULT WITH ME, LAST.
 
2QWK4RU 06 GOAT's Avatar
 
Join Date: Oct 2011
Location: Mexifornia
Posts: 571
Lower gears take the load off the tranny and/or clutch. Tune will adjust optimal shifts with your combo. Just make sure you get the gears done right, the first time. Let me know if I can help with that.
2QWK4RU 06 GOAT is offline   Reply With Quote
Old 05-04-2013, 10:02 PM   #5
ROSEA CARPA
BAAHBYE
 
ROSEA CARPA's Avatar
 
Join Date: Nov 2009
Location: Summerville S.C.
Posts: 31
Cool thank you! And I will.. The guy I have doing them has done 4 or 5 goats and all have turned out nice! So hope it works well for me
__________________
Fast and Cheap Isn't Reliable
Cheap and Reliable Isn't Fast
Reliable and Fast Isn't Cheap
ROSEA CARPA is offline   Reply With Quote
Old 05-05-2013, 01:48 AM   #6
2QWK4RU 06 GOAT
CONSULT WITH ME, LAST.
 
2QWK4RU 06 GOAT's Avatar
 
Join Date: Oct 2011
Location: Mexifornia
Posts: 571
That should be enough rebuilds, I'm somewhere in the triple digits at this point. Use factory seals and bearings if you can, the aftermarket seals tend to leak and other bearings, including timken are a step back.
2QWK4RU 06 GOAT is offline   Reply With Quote
Old 05-08-2013, 05:17 AM   #7
ROSEA CARPA
BAAHBYE
 
ROSEA CARPA's Avatar
 
Join Date: Nov 2009
Location: Summerville S.C.
Posts: 31
Does GM have a rebuild kit and if so do you have the part number? I ordered one from g force but that was two weeks ago or more and still haven't gotten it yet.... So I may just get the GM thank you !
__________________
Fast and Cheap Isn't Reliable
Cheap and Reliable Isn't Fast
Reliable and Fast Isn't Cheap
ROSEA CARPA is offline   Reply With Quote
Old 05-08-2013, 06:36 PM   #8
2QWK4RU 06 GOAT
CONSULT WITH ME, LAST.
 
2QWK4RU 06 GOAT's Avatar
 
Join Date: Oct 2011
Location: Mexifornia
Posts: 571
I have the GM parts in stock. You cant buy them in the states. The gforce kit is inferior to what I offer and use.PM me if you would like a kit. You would be taking a step backwards using the kit you mention. I'll ship tomorrow if you like. PM me.
2QWK4RU 06 GOAT is offline   Reply With Quote
Old 10-02-2013, 02:00 AM   #9
Canada
Junior Member
 
Join Date: Oct 2013
Posts: 5
I need to figure out how to fix the part in hptuners that lets you actually get it to calculate the exact speed. I know my speedo is off and have no idea how fast I'm going. But right now trying to fix my vacuum leaks at the moment.
Canada is offline   Reply With Quote
Old 10-02-2013, 02:43 PM   #10
Canada
Junior Member
 
Join Date: Oct 2013
Posts: 5
That is already done. That doesn't just fix the speedo. You have to adjust an entire table.
Canada is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:03 AM.

Billing Department News Department News Editor Obituaries Advertising Department Discussion Forum More GTO stuff

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Jett Fuel Productions, LLC - All Rights Reserved
GasTiresOil.com is not affiliated with General Motors Corp.