How wide is a Chevy 12-bolt rear end?
The rearend cover on passenger car 12-bolt rearends is oval, measuring 10-15/16-inches wide by 10-5/8-inches tall.
How wide is a Chevy truck rear end?
MEASURED ACROSS WHEEL MOUNTING SURFACE
| Year | Classic Vehicles | Width |
|---|---|---|
| 25-39 | Chevy Car | 56-58″ |
| 26-46 | Chevy Truck | 58-58″ |
| 40-48 | Chevy Car | 58-60″ |
| 49-54 | Chevy Car | 58-60″ |
What gear ratio is a 12-bolt Chevy rear end?
Probably the easiest 12-bolt differentials to find are the type 2 units. These are found primarily in standard-performance Chevrolet passenger cars. Type 2 ratios were somewhere between 2.29:1 and 2.73:1.
Are all GM 12 bolts the same?
A different 12-bolt differential was used for light truck applications, but those 12-bolt units are not directly interchangeable. You can identify a truck differential by the smaller, 1.438-inch diameter pinion shaft and the size of the rear cover, measuring 10.875 inches by 10.875 inches.
How wide is a Chevy 1500 rear axle?
65″ for 2wd. 68″ for 4wd in most cases.
What’s better 10 bolt or 12-bolt rear end?
First, the 10-bolt’s pinion shaft diameter is 1.438 (25 splines) while the 12-bolt is 1.625 (30 splines) which makes the 12-bolt 13 percent larger in diameter and therefore stronger.
How can you tell the difference between an 8.2 and 8.5 rear end?
Another way to tell the difference between an 8.2 and an 8.5 rearend is to pull the cover and look at the bolt holding the spider gear crosspin. If it takes a 1/2-inch wrench to remove it, it’s an 8.2. If it takes a 5/16-inch wrench to remove it, it’s an 8.5.
How wide is a 62 Nova rear end?
Products specifications
| Vehicle Fitment | 62-72 GM X-body vehicles (Nova, Chevy II, Super Sport, Apollo, Omega, Ventura) with single or multi-leaf rear springs |
|---|---|
| Brake Space | 2.5 inch axle standoff |
| Width | 62-67 = 57.875 inches / 68-72 = 60.250 inches (between wheel mounting surfaces) |
How do you measure a 12 bolt axle?
Examples of this is GM 12 Bolt, Mopar 9 1/4, Ford 8.8, etc… This should be measured with a tape measure by hooking the outside of the axle flange (wheel side-where the wheel studs are) and pulling back to the end of the C-Clip Button.
Is limited slip the same as Positraction?
Positraction, or positive-traction rear end, is a brand name for a limited-slip differential (LSD), which helps distribute power to the rear wheels and ensures that they are spinning at the same speed.
What size is a #12 bolt?
US Machine Screw Diameters
| Size | Nominal Thread Diameter | |
|---|---|---|
| Decimal | Nearest Fractional | |
| #8 | 0.164″ | 5/32″ |
| #10 | 0.190″ | 3/16″ |
| #12 | 0.216″ | 7/32″ |
What is a 12 bolt rear end on a GM car?
GM car and truck 12-bolt rearends are easily distinguishable by the cover shape. Most GM trucks from 1961 through 1972 used a rear suspension consisting of two trailing-arms with coil springs. There is an anomaly in that statement though, as leaf springs were an available option.
What are the dimensions of a 12 bolt axle?
Axle Images: Axle Details. The GM 8.875″ (often rounded to 8.9″) 12 Bolt axle is available in passenger car (GM 12P) and truck (GM 12T) rear axle configurations and features an 8.875″ ring gear and 30 spline semi floating axle shafts.
How do you identify a 12-bolt rear end?
Although not technically how it got its descriptive name, the easiest way to identify a 12-bolt rearend is obviously by the 12 bolts holding the rear cover in place. In actuality, the term 12-bolt is due to the 12 bolts holding the ring gear to the differential.
What is the size of a 12 bolt rear differential?
The passenger car 12-bolt has an oval-shaped differential cover, and it measures 10 15/16 x 10 5/8 inches. This 1967 Chevy truck used a trailing-arm design with coil and leaf springs.