3.73 or no 3.73,that is the question
 

Ok, I have prices for my gear selection
$125 for new 3.73's
$275 for a new posi case
$50 for a new bearing/seal kit
$150 for install
____________
$600 total

My question is: Should Pay the extra $125 for the gears, or should I just leave it 3.07 and just have the posi put in?

Re: 3.73 or no 3.73,that is the question
 

Depends.

If you have an OD tranny, I'd use a 3.73.

If you have a non OD tranny like a th350 or th400 I'd use the 3.07 unless you haul trailers all the time or something.

My $0.02

Re: 3.73 or no 3.73,that is the question
 

depends what you want to do with the truck. and what kind of mileage you expect to get.

Re: 3.73 or no 3.73,that is the question
 

Split the difference with a 3.42.

Re: 3.73 or no 3.73,that is the question
 

I have a TH350 so, maybe I'll stay with the 3.07's.

Re: 3.73 or no 3.73,that is the question
 

I like my 3:73 posi rear:burnout:

Re: 3.73 or no 3.73,that is the question
 

I have 3.42 w/ t350 trans, works for me.

Re: 3.73 or no 3.73,that is the question
 

Depends, do you like to buzz the motor? Remember that with standard sized tires (28-30" or so), 60 mph with 3.73's and a 1:1 final gear ratio is 3000 RPM...

Re: 3.73 or no 3.73,that is the question
 

If you want to win drag races 3.73.
If you want something with reasonable fuel economy (for our trucks that is) stick with the 3.07

Re: 3.73 or no 3.73,that is the question
 

i've got 3.43 in my daily driver. i got 11.88 mpg wit the 305 in my sig. turns 3000 doin 70mph, about 2000 doin 45mph. the trans is 4 spd saginaw, 1.1 final gear. im lookin to get 3.73 posi rear end. chris.