Well my brother brought his 96 GT in the shop because of a really bad gear whine. It had 82K miles and the lady never changed the rear end fluid so im guessing thats how it happened and the rear seal was leaking so the fluid was about half of what it should have been, anyway. The shop called back today and quoted...get this.... $900 for swapping out his 3.27's and putting 3.27's back in. I say if your paying that freaking much put some 3.73's or 4.10's in it and a new t-lock. I asked why it was so much and the guy said it cost $300 for them to test drive it and take a look at the rear end.!!!I did that in my driveway!! I just dont have the tools to put in a new ring and pinion. Just had to get that off my chest.

 

quite sure this was cleared up already but.....

no you could not not order 3.73's in '89 not in a mustang only ford trucks and a towing package.

yes the only 3 available were 2.73, 3.08 and 3.27 aod only

the code tag in the door shows the codes:

m=2.73
z=3.08
e=3.27

 

ive got an 88 gt with a t5 and im lookin for a gear that i can go 75 mph at about 2500 rpm with on the highway with. any suggestions?

 

3.73's

 

Hello everyone, I just want to ask how big of a difference going from 2.70's to say 4.10's would make. From what I hear it's like night and day, but I'm talking 1/4 time. My car is a 73 mach 1, with basically every bolt on (MSD box, dist., coil, K&N, edelbrock carb, flowmasters, and edelbrock intake manifold.) but the thing is such a dog off the line. I gtech'd it and it ran 16.8 with a bad start, and it was a hot, humid day (probably could run low 15's, but I cant check because my mounting bracket broke.) can someone please give me a (rough) estimate of what it could run with 4.10's, detroit locker (has open dif) and drag radials? thanks

[IMG]local://upfiles/23962/9D4979B046FC4C0BA5ABE90FAAA773EE.jpg[/IMG]

 

Sean,
Just got off the phone with my friend who owns a ford dealership here. He told me to install 3.55s, me supplying the gears, 490.00 for labor. He took that price from the Ford labor estimate book. He said it sounds a little high to him and would do it for Time and Material not to exceed 450.00.

Hope that helps you out

Steve

 

Gee, I just had my 4.10's and T-Lok installed for $250.00..

 

The guy i bought my car from said he put in 4.11 gears, i think he said they are made by summit or ford racing. Is there such thing as 4.11 gear for a 95 5.0L 5spd ? It does get up and go, and the top speed isnt all that great, and the RPM's jump up really quick, so i do imagine that he told me the truth about smaller gears.

 

I bet he meant 4.10's. And it is true, you do lose some top end. But you do get there so much faster!

 

This whole gear change thing has me about nuts. I have 02 GT, lot of bolt on stuff already on it. This GT is manual.. thats my problem. Most guys I talked to say I would be disappointed with anything but 4:10s. This car is lucky to get 5000 miles a year and I don't race it, other than smokin some local ricers I see on the way to work. So with those facts, can I safely run 4;10S or go 373s. I did some pricing and I can buy ford racing ring & pinion and the kit with all the shims,gaskets race and bearings cheaper than Richmond, Jegs. Summit is cheaper. I would think using factory parts would be the the thing to do. Am I right?

Steve PS K&W transmission will install for 175 to 200. K&W is a 3rd Generation company here and have done work for me before.