Search



Go Back   MustangForums.com > Ford Mustang Tech > 4.6L (1996-2004 Modular) Mustang
Sign in using an external account
Register Forgot Password?
Search

4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.
Sponsored by Cruizin Concepts


Welcome to Mustang Forums!
Welcome to Mustang Forums.

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, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 07-22-2013, 02:42 PM   #1
portstangly23
 
Join Date: Jan 2013
Vehicle: 2002, Ford, Mustang GT Convertible
Location: ON
Posts: 37
Default vibration with new gears?

Hey there,
I just got the 373 gear kit from American Muscle. I talked to a local shop about installing them, he seems to think there may be some issue with driveshaft vibration. Has anybody else had this issue on a New Edge?
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
portstangly23 is offline   Reply With Quote
Old 07-22-2013, 03:27 PM   #2
Soldier GT
6th Gear Member

 
Soldier GT's Avatar
 
Join Date: Aug 2007
Vehicle: 2003 Ford Mustang GT
Location: MO/ Born and raised in Louisiana
Posts: 9,644
Default

If a mechanic were to tell me that there may be a problem before installing a mod (especially gears) I would not let him touch my car. Ton's of guys on here have 373's, 410's and have no problem.. How much is he charging you and what brand of gears did you go with?
__________________


Vortech V-1 T Trim SC (intercooled)
HP 292 cams
Teksid SB bored .030 over (forged)
433 RWHP/390 RWTQ
Soldier GT is offline   Reply With Quote
Old 07-22-2013, 03:55 PM   #3
BraMas
5th Gear Member

 
BraMas's Avatar
 
Join Date: Jun 2005
Vehicle: 1996 Mustang GT
Location: Holland, MI
Posts: 4,631
BraMas
Default

Very common with 4.10 and 4.30 gears haven't heard it so much with 3.73's. Most people cure vibration with Aluminum driveshaft.
I put 4.30's and had a terrible vibration at 80 put in Aluminum D/S and no vibration at all anymore
__________________
BraMas is offline   Reply With Quote
Old 07-22-2013, 04:17 PM   #4
Stevo86
3rd Gear Member

 
Join Date: Nov 2012
Vehicle: 2000 Ford Mustang
Location: North Carolina
Posts: 574
Default

You should be fine with the 3.73 gears, it is one of the most common modifications we perform at my shop and there is never an issue. Especially if you bought the FRPP gears.
Stevo86 is offline   Reply With Quote
Old 07-22-2013, 09:10 PM   #5
cliffyk
TECH SAVANT

 
cliffyk's Avatar
 
Join Date: Dec 2006
Vehicle: 1998 SL500
Location: Saint Augustine, FL
Posts: 10,909
Default

With 3.73 gears, and for any given road speed, the driveshaft is turning 11.4% faster than with the stock 3.27 gears. In 4th gear at 80 mph this would be 4000 rpm with the 3.73s versus 3500 rpm with the 3.27s--500 rpm faster. Spinning the driveshaft faster can exacerbate imbalances and/or create sympathetic vibrations that were not previously apparent.

This can worsen if the driveshaft was not remounted to the rear end drive flange is the same relative position as before it was dropped to change out the gears.
__________________
-cliff knight-
SOLD! - 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum,
Delta Force tuned, Steeda UDPs, Ralco flywheel,
RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq


Engineering is, at its base, making what you want from what you have.
At its extreme it is making what you want from what you can get.
cliffyk is offline   Reply With Quote
Old 07-26-2013, 01:18 AM   #6
04Blue281
 
04Blue281's Avatar
 
Join Date: Apr 2013
Vehicle: 2004 Ford Mustang GT
Location: KCMO
Posts: 40
Default

I had a hard time deciding on which shop to have install my Ford Racing 4.10 gears (just a couple of months ago). Talked with people at a few shops --- wound up going with the guy at a local dealership (because he had the most experience and knowledge).

It was a bit expensive, but the job was done to my FULL SATISFACTION. No vibration and no "gear whine". Runs just as smooth and quiet as the factory installed 3.27 gears. I quickly forgot about the extra $$ for the install.
04Blue281 is offline   Reply With Quote
Old 07-26-2013, 01:18 AM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

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

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 10:44 AM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup