3.73 gear swap - any FYI's to know about? - Page 2 - MustangForums.com


Go Back   MustangForums.com > Ford Mustang Tech > V6 (1994-2004) Mustangs
Sign in using an external account
Register Forgot Password?
Search


V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters
Sponsored by Optima Batteries


3.73 gear swap - any FYI's to know about?

Reply
 
 
 
 
Thread Tools Search this Thread
Old 06-03-2013, 05:34 PM   #11
Toadster
1st Gear Member
 
Toadster's Avatar
 
Join Date: Apr 2013
Vehicle: 2000, Ford, Mustang
Location: CA
Posts: 122
Default

Quote:
Originally Posted by jthorn9 View Post
Tlock in a 7.5" rear for $700 = money up in smoke = paperweight
the open diff on our car has 146k miles on it so far... still going

why a paperweight? it's not like we're going to put a 175-shot of nitrous on this car
Toadster is offline   Reply With Quote
Old 06-03-2013, 06:40 PM   #12
jthorn9
The Godfather
 
jthorn9's Avatar
 
Join Date: Sep 2005
Vehicle: 2013 Mustang GT CS
Location: College Station, Texas
Posts: 15,459
Jeremy Thorner jthorn9
Default

Because the Tlok is very famous for failure under stock loads. It's not a very well constructed differential.
__________________
13 Mustang GT CS - 380 RWHP 370 TQ
13 Mustang V6 PP - 270 RWHP 260 TQ

95 Mustang SVO - 400 RWHP 400 TQ sold
08 Mustang GT - 285 RWHP 305 TQ sold
99 Mustang Cobra - 280 RWHP 290 TQ sold
11 Mustang V6 - 270 RWHP 260 TQ sold
97 Mustang GT - 190 RWHP 250 TQ sold
00 Mustang V6 - 145 RWHP 184 TQ sold
98 Mustang V6 - 125 RWHP 210 TQ sold
jthorn9 is offline   Reply With Quote
Old 06-06-2013, 02:07 AM   #13
mustangcrazy87
1st Gear Member
 
Join Date: Feb 2007
Location: Evansville, IN
Posts: 89
Default

I had 4.10s and my diff blow after about 75,000 miles on it. I changed to 3.73. Slow, can't spin the tires as easy, but its still quick and I got a boost in mileage of about 4-5 mpg over my 4.10s.
__________________
mustangcrazy87 is offline   Reply With Quote
Old 06-06-2013, 05:47 PM   #14
Toadster
1st Gear Member
 
Toadster's Avatar
 
Join Date: Apr 2013
Vehicle: 2000, Ford, Mustang
Location: CA
Posts: 122
Default

Quote:
Originally Posted by mustangcrazy87 View Post
I had 4.10s and my diff blow after about 75,000 miles on it. I changed to 3.73. Slow, can't spin the tires as easy, but its still quick and I got a boost in mileage of about 4-5 mpg over my 4.10s.
holy crap - what MPG were you getting with 4.10s?
Toadster is offline   Reply With Quote
Old 06-06-2013, 09:39 PM   #15
mustangcrazy87
1st Gear Member
 
Join Date: Feb 2007
Location: Evansville, IN
Posts: 89
Default

Quote:
Originally Posted by Toadster View Post
holy crap - what MPG were you getting with 4.10s?
With everything else i had on the car, i was getting about 10-11 mpg. Now im getting close to 14-15
mustangcrazy87 is offline   Reply With Quote

 
 
 
Reply

Tags
3.73, differetial, gears, mileage, posi

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 05:33 AM.>

© Internet Brands, 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