99 Mustang -- Same rear axle as mine?

Skandocious · Oct 20, 2008

Got a guy who contacted me about the 3.55 gears I've got for the Ford 8.8.

He's asking me if the gears are compatible with his 99 Mustang... Does anyone know if they were still using the 8.8" rear axle in 99?

Skandocious · Oct 20, 2008

Anybody? I figure ONE of you mustang guys has to know this...

TheRoadVirus · Oct 20, 2008

http://www.google.ca/search?sourcei...260&q=rear+differential+used+in+1999+mustang?

O'Rattlecan · Oct 20, 2008

aaahhh.... a wise guy... :rofl:

Ryan

Skandocious · Oct 20, 2008

I didn't know if the spline count would be the same on that 8.8 as mine...

Though I guess it wouldn't matter for a gear swap :rofl:

surewhynot · Oct 20, 2008

The axle spline count wouldn't matter on just the r&p. The pinion spline is the same. I'm assuming it would work, but that is just an assumption.

Skandocious · Oct 20, 2008

surewhynot said:
The axle spline count wouldn't matter on just the r&p. The pinion spline is the same. I'm assuming it would work, but that is just an assumption.

Hahaha yeah I just edited my post with that same thought.

Cool. I'll let this guy know.

Chrono558 · Oct 20, 2008

A 99 Mustang GT should be a 28 spline 8.8" rear end provided it's not a cobra or higher. The V6 uses a 7.5" rear end. So provided it's a GT the ring and pinion should work provided he uses his same case and spiders. I may be wrong on all that but here are the sources I used.

http://forums.stangnet.com/743163-31-vs-28-spline-vs-7-5-vs-8-8-vs-9-a.html
http://www.ringpinion.com/PartCats....Mustang&Side=Rear&DiffID=28&DiffName=Ford 8.8

Hope that helps ya Skan.

Chrono558 · Oct 20, 2008

Bah, beat me to it.

Skandocious · Oct 20, 2008

Chrono558 said:
A 99 Mustang GT should be a 28 spline 8.8" rear end provided it's not a cobra or higher. The V6 uses a 7.5" rear end. So provided it's a GT the ring and pinion should work provided he uses his same case and spiders. I may be wrong on all that but here are the sources I used.

http://forums.stangnet.com/743163-31-vs-28-spline-vs-7-5-vs-8-8-vs-9-a.html
http://www.ringpinion.com/PartCats....Mustang&Side=Rear&DiffID=28&DiffName=Ford 8.8

Hope that helps ya Skan.

Great info. I'll confirm with him that it's a GT. If it's a cobra then what rear end is he using?

Chrono558 · Oct 20, 2008

If it's a cobra I'm assuming it should still be a 8.8" with 31 splines instead of 28. If that's the case then why is he wanting 3.55s?

Skandocious · Oct 20, 2008

He said he's got 4.10s and wants to swap to 3.73s or 3.55s... Sounds like someone's wallet is getting too light

Chrono558 · Oct 20, 2008

Heh. My answer to that is the cheap $500 4 banger. That would be cheaper in the long run.

Skandocious · Oct 20, 2008

What would you guys ask for an used 8.8" ring and pinion set in PERFECT shape? Bout 100k miles on 'em and nothing to show for it. Factory gears, Ford logo stamped on em.

surewhynot · Oct 20, 2008

One million dollars...

surewhynot · Oct 20, 2008

Or 50 bucks.

Skandocious · Oct 20, 2008

Hahah, I asked him $70 since he's asking me to separate the whole set of 3.55 r&p + carriers for front and back.

He's free to negotiate from there

surewhynot · Oct 20, 2008

Good price. Right in between my two suggestions.

Cope&Dies · Feb 14, 2009

your truck has the same rear as a mustang?! HA!

Join Our Ford Truck Forum Today

99 Mustang -- Same rear axle as mine?

Skandocious

Post Whores Make Me Sick

Skandocious

Post Whores Make Me Sick

TheRoadVirus

High-Steppin' Mo-Sheen

O'Rattlecan

Redneck Prognosticator

Skandocious

Post Whores Make Me Sick

surewhynot

Rep whores make me sick

Skandocious

Post Whores Make Me Sick

Chrono558

Chrono558

Skandocious

Post Whores Make Me Sick

Chrono558

Skandocious

Post Whores Make Me Sick

Chrono558

Skandocious

Post Whores Make Me Sick

surewhynot

Rep whores make me sick

surewhynot

Rep whores make me sick

Skandocious

Post Whores Make Me Sick

surewhynot

Rep whores make me sick

Cope&Dies

gab-d a snaks

Ford Truck Articles

Recent Forum Posts

Share this page