What is a 10 bolt differential?
The 10-bolt differential cover is located on the rear of the axle and is an 11-inch x 10.25-inch oval. Another 8.2-inch axle was built for B-O-P applications and is commonly found in earlier GM mid-size cars. The 10-bolt, 8.2-inch differentials use . 375-inch right-hand thread bolts in the ring gear.
What does a 10 bolt rear end mean?
Identifying the 10-bolt axle is easy. The nomenclature actually refers to the number of ring gear bolts. The outer cover matches; 10 bolts hold the cover onto the housing. This ring-and-pinion gear has suffered catastrophic failure.
What size is a 10 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″ |
Are Chevy 10-bolt rear ends good?
That’s usually proven when used in high-performance, high-horsepower applications. But for all intents and purposes, the 10-bolt rearend is a great unit for a street/strip car, and can be stout enough to handle even the occasional abuse delivered by use at the racetrack.
Does Ford have a 10-bolt rear end?
There are two headings, one for Ford-manufactured units and a separate one for Dana/Spicer units. Ford 7.5 and 8.8-inch units both have 10 bolts, however, the cover and gasket shapes are different. Similarly, the Dana 35 and 44 models have ten bolts with different cover and gasket shapes.
How do you identify a 10-bolt rear end?
The easiest way to identify the 8.2-inch rearend at a glance is by the shape of the housing and the spacing between the lower bolts on the cover. The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonal protrusion at the top.
What kind of horsepower does a 10-bolt differential have?
10-bolt Performance The Torsen heavy-duty differential is a unit that is currently being sold in the 1999 Pontiac SLP Firehawk. The LS-1 based Firehawk outputs about 345 rear-wheel horsepower, and offers a warranty to boot. Therefore, a goal for a 400-horsepower capable 10-bolt seems attainable with this differential.
Where is the casting number on a 10 bolt rear differential?
The casting numbers for 10-bolt rear differentials are typically located either on the forward side of the passenger-side axle tube or on the driver’s side. These numbers are approximately 3 inches from the center section. The two examples at right show you how to decode 10-bolt housings. 1970 axle code: COZ 01 01 G E
What size is the pinion on a 10 bolt differential?
The 10-bolt, 8.2-inch differentials use.375-inch right-hand thread bolts in the ring gear. The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches.
What is a 10-bolt rear axle?
The 8.5-inch is often referred to as the “GM corporate 10-bolt” because of its multiple uses, and the 8.5-inch is a semi-float axle, meaning it has only one axle bearing per side, mounted inside the axle tube. The reliability of the axle tube and bearing are really the only problem spots you are likely to encounter with the 8.5-inch rear end.