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

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06-03-2013, 05:34 PM

#11

Toadster

1st Gear Member

Thread Starter

Join Date: Apr 2013

Location: CA

Posts: 127

Quote:

Originally Posted by jthorn9

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

06-03-2013, 06:40 PM

#12

jthorn9

The Godfather

Join Date: Sep 2005

Location: Temple, Texas

Posts: 15,481

Because the Tlok is very famous for failure under stock loads. It's not a very well constructed differential.

06-06-2013, 02:07 AM

#13

mustangcrazy87

1st Gear Member

Join Date: Feb 2007

Location: Evansville, IN

Posts: 89

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.

06-06-2013, 05:47 PM

#14

Toadster

1st Gear Member

Thread Starter

Join Date: Apr 2013

Location: CA

Posts: 127

Quote:

Originally Posted by mustangcrazy87

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?