lets build a 7.5

billison · Nov 15, 2006

OK, i dunno if i'll do it or not, but for the same of education lets talk about this.

Lets say i really want to keep my 7.5, or for some reason i had to keep it what all could be done to build it up?

I've heard of people pulling the gears out of a ranger and tossing them in the rear of a fox being their 4.11s. Anyone ever done this or know anything about this? What about disk break?

I might want to do this just to give the rear some get up and go for now...

dragnazz5.0 · Nov 15, 2006

no body makes a gear for the 7.5

billison · Nov 15, 2006

i know that, but humor me

would it work to pull the gears from a ranger, i know it's NOT the way to go,but i've always wonderd

dragnazz5.0 · Nov 15, 2006

technically if its a 7.5 rear end it would work

bullitstang1313 · Nov 15, 2006

Motive Gear sells gears for the Ford 7.5 rear differential. I don't see why you couldn't use the gears out of a Ranger, its the same rear end. The only problem would be if the Ranger uses a different (smaller) limited slip unit, but I don't think so.

MrKwik · Nov 15, 2006

I suppose the fistt quiestion would be why bother but for the sake of argument...

Most 8.8 stuff with the exception of the center section is the same. Any axles or brakes that you would use on an 8.8 you could use on a 7.5. I dont imagine anybody makes a "good" carrier for the 7.5 because there is no market for it. Nobody bothers to beef them up. Think about the fact that a stock 8.8 carrier is probably stronger than a nice aftermarket one for a 7.5 and you can understand why the aftermarket wouldnt waste their time.

stang8urimport · Nov 15, 2006

Ummmm... lots of people make gears for 7.5''s. And you can get a traction lock straight from Ford for it. It just won't hold up to as much power.

90_Red_LX · Nov 15, 2006

Theres a lot of things you can do to be different, but by building up a 7.5, it will have nothing but a short lived life behind a v8 with any sort of power.

donsbad68 · Nov 15, 2006

As said before there are many companies who produce gears for 7.5's

marine_2003 · Nov 15, 2006

I am building the 7.5 in my car, getting gears from Motive Gear, a Differential for Summit (Ford Racing). I know that there are a few guys running 10's on a 7.5. So, it will hold up, it just has to be done right. And thats on drum brakes as well.

Dean85GT · Nov 15, 2006

lets not waste our time with one of those. Considering you can grab an 8.8 for dirt cheap anywhere I think its stupid.

PJB · Nov 15, 2006

bullitstang1313 said:
Motive Gear sells gears for the Ford 7.5 rear differential. I don't see why you couldn't use the gears out of a Ranger, its the same rear end. The only problem would be if the Ranger uses a different (smaller) limited slip unit, but I don't think so.

Most Rangers have open differentials. Mine definately did.

billison · Nov 15, 2006

right, i don't plan on building one for anything special or to be" differnt" but i'm probly going to sell my car in the spring and thought i might be able to toss some ranger 4/11s in it and have some fun while i still have it and not put alot of money into it, that and a car with gears will sell better..

stangjunkie · Nov 15, 2006

sounds possible...

shifterpilot5.0 · Nov 15, 2006

I have a 8.8 with 3.27's great condition I will sell you for $100 if you want to come pick it up in Houston.

billison · Nov 15, 2006

I'll just drive right down to texas and pick it up...if youwere closer i'd be all over it like rust on the bottom of my car.

shifterpilot5.0 · Nov 15, 2006

LOL I could prolly ship it for around $100, if you are really intrested.

billison · Nov 15, 2006

i might be, i'll pm you later

giddyup306 · Nov 15, 2006

Yeah their are companies that make gears for the 7.5. Including Eaton which supplies a lot of parts for Ford.

But, you will probably spend more for a used set of gears as opposed to buying a used 8.8 assy.

If you want to do it great. If you are doing a gear swap, you will be looking to replace axle seals and possibly the bearings. Sometimes they break when they are pressed off.

The 7.5 is not very cost effective IMHO.

MrKwik · Nov 16, 2006

marine_2003 said:
I know that there are a few guys running 10's on a 7.5. So, it will hold up, it just has to be done right. And thats on drum brakes as well.

Name ONE. Thats in the eighth?

There is a big difference in running a 10 once and having it "hold up". One good hook on a 7.5 has been known to send the spider gears through the back cover, why roll the dice?

lets build a 7.5

billison

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