Full Answer
What Mustangs have the 7.5 rear end?
All '79-85 Mustangs featured the 7.5 rear ends.
How do you tell if you have a 7.5 or 8.5 rear end?
The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. You will also notice the large, flat, cast-in protrusions at the five and seven o'clock positions. These protrusions are larger than those on the 7.5 rearend.
What is a 7.5 rear end?
The GM 10 Bolt 7.5 rear end, also known as the AAM 7.5, GM 7.6, and GM 7.625 rear end was the most common housing used in GM G-body car vehicles. It featured a 7.5 inch diameter ring. The GM 7.625 version used a slightly larger 7.625 diameter ring gear.
Is Positraction the same as limited slip?
TOM: Actually, Jeannie, "posi-traction" is just Chevrolet's name for limited slip differential on passenger cars. RAY: Normally, on a rear wheel drive car, the power is delivered to both of the rear wheels equally.
What did the Ford 8.8 come in?
First appearing in 1977, the 8.8 is found in almost all Ford V8 cars from '86 on, and in V6 Rangers and Explorers. There are 24 different Fords that offered the 8.8 rear axle. The weakest points of the 8.8 are the 28-spline axles (1.18 inches in diameter).
What rear end is in a 2000 V6 Mustang?
From 1986-2010, the Ford Mustang 8.8” rear end would be used for all V8 Mustangs, and the Ford 7.5” rear end was installed into all 4 cylinder (2.3L) and V6 Mustangs (3.8L).
What year Mustang has 31 spline axles?
For 2011-2014 Mustangs, both the V6 and 5.0L V8 Mustang were equipped with 31 spline axles.
What Mustangs came with IRS?
Which Mustangs Use IRS? Mustangs that are 2015 model year and newer use independent rear suspension. The aforementioned 1999-2004 Cobra Mustangs use IRS as well. While some enthusiasts decry the move away from a solid rear axle, it represented an important shift for the Mustang moving into the modern era.
How can you tell a 8.5 rear end?
0:031:13GM 8.2 10 Bolt vs 8.5 how to tell the difference - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis particular rear-end here is actually a truck 73 287 rear-end. But what I want to talk about isMoreThis particular rear-end here is actually a truck 73 287 rear-end. But what I want to talk about is how to spot a Big Ten housing. Basically this these ears on the housing indicates a big ten that's
How do I know what size rear end I have?
3:034:09How to Identify Your Differential & Axle Type | Differential Tech TipsYouTubeStart of suggested clipEnd of suggested clipSimply by the size of the pinion nut. Also look to see if you have a pinion support someMoreSimply by the size of the pinion nut. Also look to see if you have a pinion support some differential is like a 9-inch Ford or a 14 volt full floating ten and a half inch GM differential.
How do I identify my GM rear end?
Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door panel or glove box.
How can you tell the difference between a Ford 7.5 and 8.8 rear end?
5:487:21Learning the visual difference between the Ford 7.5 and 8.8 rear ...YouTubeStart of suggested clipEnd of suggested clipBut when you look at the rear end back there see the nine o'clock and 3 o'clock positions yep it'sMoreBut when you look at the rear end back there see the nine o'clock and 3 o'clock positions yep it's rounded 7.5 boo the second-gen Rangers had rear ends that were 8.8 if they had the v6.
1973camaro406 Veteran Member
Just wondering if anyone knows the horsepower limit of a stock 8.5 ring gear 10 bolt posi?
CorkyE Veteran Member Lifetime Gold Member
Just keep going up till you find out and and let us know. J/K... It really depends on the condition of your gears but a lot of guys are putting 400+ to a "stock" rear end and surviving. Myself - I have Zoom gears, aftermarket axles, Eaton posi, welded tubes and a stud girdle.
Bruce Sherman Veteran Member
I would say a bone stock (in good condition) rear should hold up to a mid 10 sec pass with a 1.5 short time, then a upgrade would be in order. Although the safety tech guys will want you to start changing the stock rear after <11.999 . I personaly have taken a stock (factory) 8.5 to 12.07, with a 1.701 short time and never had a min trouble.
primer z Veteran Member
before i upgraded my 8.5, it was all stock, except for gears and i welded the axle tubes. the fastest i went on it was 10.02 at 134 mph with a 1.47 60 foot. this car always had slicks on it, and years of street abuse. i did it with a 406 leaving in a 175 shot. i think i just got lucky.
lluciano77 Guest
A locker will strengthen the case more, but I think the C-clips become the weak link. The ring gear is only slightly smaller than a 12 bolt. It is 3/16" to either side.
78LT383 Veteran Member Lifetime Gold Member
There's no real horsepower limit because it's not really horsepower that kills an engine directly. There are three factors at work- the fatigue accumulated in the parts, the forces due to the applied torque, plus the dynamic loads present at the time.
Marks71BB Veteran Member Lifetime Gold Member
I plan on putting 500 ponies in mine.. eaton posi and alloy axles in a stock diff. new bearings and chit I dont expect any problems...