Quick Answer

Question Are 10 bolt and 12 bolt axles the same?

12 bolt axles have 30 splines, 10 bolt have 28, but yet both axles are the same lenth and diameter. That means that if the 10 bolt had a 30 spline carrier the 12 bolt axles would bolt in.

What is the advantage of a 12 bolt rear end?

When the 12-bolt rearend is properly assembled, it’s the strongest passenger-vehicle rearend Chevy ever produced. GM engineers designed the 12-bolt to be a durable piece that could handle the torque output of its big displacement engines.

Are 10 bolt rear ends strong?

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.

How do you identify a 10 bolt rear end?

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.

Are all GM 12-bolt rear ends 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 much horsepower can a 8.2 10 bolt handle?

Roughly 550 to 600 HP total. No slicks, drag radials. No problems with the 8.2 at all. I used the stock diff., the Auburn would be better.

What is the strongest rear end?

Dana 60 Rear End Assemblies

If you want a big brute of a rear end under your car, look no further than a Dana 60. Even in the heyday of muscle cars, Dana 60 rear differentials were renowned for their strength, along with their difficulty to locate.

What’s the best rear end for drag racing?

Ford 9″– The Ford 9″ is definitely the most popular of the rear ends in drag racing. It offers good strength characteristics and the largest variety of gear choices. The thirdmember type center section allows a racer to have multiple gear ratios available and is much easier to change than a rear loading type rear end.

What is a good gear-ratio for a street car?

If we have a daily driver, 2.55 to 3.25 gear ratios typically work best, whereas a street/strip application we would usually use a 3.42 to a 3.90 gear ratio, and race applications most commonly use a 4.10 and above gear ratios.

Will a Tahoe rear end fit a Silverado?

No. You shouldn’t try fitting a Silverado differential into a Chevy Tahoe.

What year s10 has 8.5 rear end?

According to Chevy High Performance, the 7.5-inch was standard until 1993, when the previously optional 7.625-inch became standard. 1995 and newer S-trucks equipped with the high-output V6 were equipped with the 8.5-inch rear end.

What rear end do I have in my Chevy truck?

You can typically find your RPO code on driver side door panel or glove box. General Motors rear end differentials are referred to by the diameter of the ring gear, i.e. 7.5 inch, 8.5 inch, 10.5 inch.

How do I know if my 10 bolt is posi?

Locate two lugs, or ears, extending out from the bottom of the gear casing approximately in the 4 o’clock and 8 o’clock position. This will firmly identify the unit as having come with Positraction from the factory.

Do I have Positraction?

Shift your transmission into neutral so that the rear wheels rotate freely. Grasp one rear wheel, turn it and observe the other rear wheel. If the other rear wheel turns in the same direction, there is positraction.

Is posi traction the same as limited slip?

Despite the fact that a lot of folks confuse the terms “posi” or “Positraction” with “limited slip,” the fact is that the two are basically one and the same. Today, all positive traction systems are referred to as limited slip systems.

How do I identify a GM 12-bolt rear end?

The easiest way to identify a 12-bolt rearend is obviously by the 12 bolts holding the rear cover onto the axle housing. The pinion shaft on passenger-car differentials is 1-5/8-inch in diameter and the cover is oval, measuring 10-15/16-inches wide by 10-5/8-inches tall.

What rear end came in a 57 Chevy?

Automatic 57 cars (both 6 and V8) came with 14inch tires and 3:36 rear gears. Stick shift 57 cars came with 14 inch tires and 3:55 gears.

How do I identify my GM truck 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 do you narrow a GM 10 Bolt?

Dave, You can narrow a 10 bolt by getting a donor rear (8 3/4 Mopar works good) and narrow the donor axles and put the chevy spline on the end. Then use the donor axle housing ends, brakes, etc and you have a much stronger rear and bigger brakes.

How much horsepower can a 9-inch rear end handle?

“They’re good only to 400hp max,” says Tom at Tom’s Differentials. “Anything above that should use today’s beefed-up, redesigned, nodular-iron aftermarket cases. They’re good to 800 hp, if built properly.

How much horsepower can a Ford 8.8 handle?

Dead stock (31 spline version, which is what the Explorer has) it can handle up to about 400 rwhp as long as you’re not on DR’s or Slicks.

What is so special about a Ford 9-inch rear end?

The Ford 9-inch is desirable because it has a removable carrier, which allows quick rear end changes. Many racers carry an extra carrier assembly with a different rear end ratio so they can try different combinations on the same day while at the track.

What’s the best gear ratio for speed?

In the real world, typical street machines with aspirations for good dragstrip performance generally run quickest with 4.10:1 gears. Lower gears are required if the car is very heavy, or if the engine makes its power at the upper end of the rpm scale.

What is the best gear ratio for torque?

indeed Does gear ratio affect horsepower? A higher numeric axle ratio (4.11:1) keeps the engine running in the higher horsepower range, thus improving performance.Are 3.73 or 4.10 gears better?

3.73 Ratio 4.10 Ratio
Lower Torque Higher Torque
Better Gas Mileage Decreased Gas Mileage
Higher Top Speed Lower Top Speed

Which gear ratio is faster?

A lower (taller) gear ratio provides a higher top speed, and a higher (shorter) gear ratio provides faster acceleration. . Besides the gears in the transmission, there is also a gear in the rear differential. This is known as the final drive, differential gear, Crown Wheel Pinion (CWP) or ring and pinion.

Is it better to have more torque or horsepower?

So, which is better for you and your racing dreams? Well, if you just want to go fast and hit 140 mph, then horsepower would be more effective for you. However, if you want a strong car that can pull boulders and take off quickly, a high torque might be more important to you. In short, torque makes your vehicle quick.

What are 3.73 gears good for?

FACT: A 3.73 axle ratio is ideal for towing heavy loads on flat terrain and will produce increased fuel economy during steady-state, long-distance highway driving.

Does higher torque mean faster acceleration?

So the more torque your car has, the greater the acceleration. Torque is a crucial part of generating power from a car’s engine, as it represents the load an engine can handle to generate a certain amount of power to rotate the engine on its axis.