Go Back   Third Generation F-Body Message Boards > Tech Boards > Transmissions and Drivetrain
Sign in using an external account
Register Forgot Password?

Transmissions and Drivetrain Need help with your trans? Problems with your axle?

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 09-10-2009, 07:49 PM   #1
Junior Member
 
Join Date: Jan 2008
Posts: 4

Classifieds Rating: (0)
Q's on rear axle swap

I have 2 '89 Formulas. 1 of them is a 5-speed, the other is automatic. Both are 305 TBI cars.
I'm starting to hear a fair amount of rear end roaring in the auto car.
I thought I'd swap the rear axle assembly from the standard shift car into the auto.Do any of you folks know of any problems there may be, or is it a direct swap out?

Also, what ratios were available in these 2 cars?

Thanks,

Jeep

Last edited by Jeep; 09-10-2009 at 07:54 PM.
Jeep is offline vBGarage Page   Reply With Quote
Old 09-10-2009, 08:10 PM   #2
Supreme Member
 
//<86TA>\\'s Avatar
 
Join Date: Aug 2006
Location: Central NJ
Posts: 10,293
Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, 700r4
Axle/Gears: Moser 9", 3:70 trutac, open 3:23

Classifieds Rating: (9)
Re: Q's on rear axle swap

is will be a direct swap only difference would be if one has disc brakes and the other has drums.

as for ratios, on the homepage, on the right of the screen is a section for firebird tech data, under 89 you will find the options for ratios
//<86TA>\\ is online now vBGarage Page   Reply With Quote
Old 09-10-2009, 08:40 PM   #3
Junior Member
 
Join Date: Jan 2008
Posts: 4

Classifieds Rating: (0)
Re: Q's on rear axle swap

Quote:
Originally Posted by //<86TA>\\ View Post
is will be a direct swap only difference would be if one has disc brakes and the other has drums.

as for ratios, on the homepage, on the right of the screen is a section for firebird tech data, under 89 you will find the options for ratios

Thanks TA,
both are drum brks, but now I'm a little bummed out. Looks like the standard trans car has lower gears which will add about 300 rpm or so @ 70 mph.

Thanks again,

Jeep
Jeep is offline vBGarage Page   Reply With Quote
Old 09-10-2009, 08:52 PM   #4
Supreme Member
 
//<86TA>\\'s Avatar
 
Join Date: Aug 2006
Location: Central NJ
Posts: 10,293
Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, 700r4
Axle/Gears: Moser 9", 3:70 trutac, open 3:23

Classifieds Rating: (9)
Re: Q's on rear axle swap

Quote:
Originally Posted by Jeep View Post
Thanks TA,
both are drum brks, but now I'm a little bummed out. Looks like the standard trans car has lower gears which will add about 300 rpm or so @ 70 mph.

Thanks again,

Jeep
thats not much really, unless you are looking to squeeze every MPG you can out of the car.
//<86TA>\\ is online now vBGarage Page   Reply With Quote
Old 09-10-2009, 09:12 PM   #5
Junior Member
 
Join Date: Jan 2008
Posts: 4

Classifieds Rating: (0)
Re: Q's on rear axle swap

Quote:
Originally Posted by //<86TA>\\ View Post
thats not much really, unless you are looking to squeeze every MPG you can out of the car.
I know it's not much and most folks wouldn't give it a second thought, but I'm a mechanic by trade, and I've always liked for my engines to turn low rpms.
The slower they can turn and not get bogged, the longer they last.

Jeep
Jeep is offline vBGarage Page   Reply With Quote
Old 09-10-2009, 09:24 PM   #6
Senior Member
 
big gear head's Avatar
 
Join Date: Sep 2008
Location: Central City, KY.
Posts: 1,624

Classifieds Rating: (0)
Re: Q's on rear axle swap

Fix the rear end that's in it now. It's probably just a bad bearing.
big gear head is offline vBGarage Page   Reply With Quote
Old 09-10-2009, 10:13 PM   #7
Junior Member
 
Join Date: Jan 2008
Posts: 4

Classifieds Rating: (0)
Re: Q's on rear axle swap

I plan on totally rebuilding it, but right now, it's my only transportation. I can swap the assembly in half a day or less, rebuilding will cost alot more than I can afford right now, and I may run into needing parts that aren't available in this small town.
Jeep is offline vBGarage Page   Reply With Quote
Old 09-11-2009, 08:01 AM   #8
Senior Member
 
big gear head's Avatar
 
Join Date: Sep 2008
Location: Central City, KY.
Posts: 1,624

Classifieds Rating: (0)
Re: Q's on rear axle swap

If it's just a temporary swap then why sweat it? Just swap it until you get the other one rebuilt. If you need parts let me know.
big gear head is offline vBGarage Page   Reply With Quote
Old 09-11-2009, 08:01 AM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Transmissions and Drivetrain

Tags
3rd, 9, axle, brake, camaro, cost, disc, drum, end, gear, gen, jeep, moser, rear, swap
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 09:54 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.5.2
All content copyright © 1997 - 2012 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details