7.5 inch rear question

[b-blown]

drivetrain specialties sells a detroit locker ,good gears and axles aswell as a rearcover girdle....how much could our rearends take with these parts installed....I know theres a board member or two that have been known to break the 7.5....lol any answers would be appreciatted....

[EHardy1971]

The ring and pinion is the weak part of the 7.5 in my experience, from the ones that I've destroyed.

[SlowJoe]

i would not put any money in a 7.5 because 8.8 is so easy to swap. i seen one bust the spider gears and it was not that bad of car.

[QWKSNKE]

I think a 7.5 would last awhile behind a turbo 4

[SlowJoe]

I think a 7.5 would last awhile behind a turbo 4

would you put all that money in a 7.5?

[qkjuicedpony]

would you put all that money in a 7.5?


why not?


he keeps putting it in slow ass mod motor cars...just like you



:jester:

[QWKSNKE]

would you put all that money in a 7.5?

behind a 4 cylinder I would contemplate it. Your looking at least another $300 to put an 8.8 under it (unless you have one laying around the house)

[coupe]

The 7.5 is a pretty tough rearend. I've seen them get abused behind 302's in '85 GT mustangs as well as behind some pretty strong 2.3's. And let's face it, the 8.8 can have issues too, if things are not setup right. I wouldn't hesitate to put good parts into an SVO 7.5 rear.

(And remember: the LS1 camaro/transam also has a 7.5" ring&pinion)

[LeeH]

drivetrain specialties sells a detroit locker ,good gears and axles aswell as a rearcover girdle....how much could our rearends take with these parts installed....I know theres a board member or two that have been known to break the 7.5....lol any answers would be appreciatted....

The 7.5 fox axles are the same as an 8.8 fox, They are both 28 spline and the same length. I have one that I pulled from the Capri, It suffered a spider gear failure. I have had several 7.5s and as long as you don't shock load them they will live for a while, If you aren't making lots of tq and are running an auto it will last for a long time. In all honesty I killed on an average of about 4-5 T5s to every 7.5 in my old 84GT but my 79RS never had a rear end issue other than an axle after I went to a C4.

[EHardy1971]

I have had several 7.5s and as long as you don't shock load them they will live for a while,

:yup: Like side stepping the clutch at 5 grand in a '79 Capri with a 302,in a Wal-Mart parking lot,on a Friday night.:bomb:















Hypothetically speaking of course.:jester:

[LeeH]

:yup: Like side stepping the clutch at 5 grand in a '79 Capri with a 302,in a Wal-Mart parking lot,on a Friday night.:bomb:













Hypothetically speaking of course.:jester:

ROFLMAO
I had a 79RS with a 302 and an SROD, The tranny died first then after a few T5s the rear end died and took a set of 3.73s with it. Similar situation but it wasn't a Wal-Mart, It was the back parking lot at my old HS on a concrete apron with a set of slicks.:chug:

Thats when I went to a C4.