GM 14 Bolt Specs
|Applications:||1973 – present GMC & Chevrolet trucks (AAM axles replaced the 14 bolt in most applications for 2001+ model years)|
|Axle Spline Count:||30 spline|
|Axle Shaft Diameter:||1.50″ or 1.34″|
|Axle Tube Diameter:||3.25″ diameter, 0.50″ wall thickness tubes|
|Pinion Diameter:||1.750″ pinion|
Is a 14-bolt semi float good?
Still, the 14-bolt semi-float is a solid axle for a lot of applications. Compared to a GM 10-bolt axle (for example), a semi-float 14-bolt is a nice upgrade. You can spot a semi-float 14-bolt axle by counting the lugs (if it’s a six lug wheel, it’s a semi-float), or by looking at the wheel surface.
How much does a 14-bolt SF weigh?
The typical 14 bolt axle weighs about 550 pounds.
How strong is a GM 14-bolt?
GM’s Strong &
First appearing in 1973, the 14-bolt is one of the most used rear axles in the General Motors stable. Found under ¾- and 1-ton GM trucks, vans and SUVs, the 14-bolt received a max torque rating of 6,242 pounds.
Is a 14-bolt A 1 ton axle?
The 14-Bolt Is The Ford 9-Inch Of 1-Ton Trucks
Every diesel-powered pickup sold in the United States for the last 10 years has a full-floating rear axle.
How do I identify a 14-bolt rear end?
GM 14 Bolt Differential Explained – How to Identify
Are all 14 bolts the same?
Over the years, there have been millions of 14 bolt axles produced. And, of course, they weren’t all the same. GM 14 bolt axles were available in semi-float and full-float versions, and there are two types of hubs found on 14 bolt axles. Also, two different types of drums were used.
What trucks have a 14-bolt rear end?
The 10.5″ Corporate 14 Bolt Differential is a heavy duty differential found on many 1973-2013 Chevrolet and GMC trucks and SUVs, as well as certain versions of the Cadillac Escalade. Additionally, this differential is found on Chevrolet Express and GMC Savanna vans produced from 1973 to current day.
How do I tell what gear ratio my 14-bolt is?
Carefully count the number of full revolutions the driveshaft makes. This is your gear ratio. In other words, if the drive shaft turns 3 &
3/4 turns, you probably have a 3.73 gear ratio.
How wide is a GM 14-bolt axle?
GM 14-Bolt Specs
|Pinion Bearing Preload (Inch lbs)||25 – 35 (new bearings) 5-15 (reused bearings)|
|Pinion diameter||1.750″ x 30 splines|
|Carrier Break||4.10 / 4.56|
|Approximate Weight (lbs)||550 with brake drums 450 without brake drums|
|Width – WMS-WMS (inches)||SRW/DRW 67″ C&C DRW 63″|
What size is a 14-bolt rear end?
14 Bolt Axle Dimensions
|WMS to WMS width||Axle tube diameter|
Is Dana 60 full float?
Dana 60 rear axle
Manufactured in both full float and semi float variations. The semi float axles have GAWR up to 5,500 lbs and the full float axles were rated up to 6,500 lbs. Full floating variants are common while Semi-floating axles exist, but are less common.
How many splines does a 14 bolt have?
The 14-bolt axleshaft is still 1 1/2 inches, but has a 30-spline cut with a unique spline pitch. The 14-bolt axles typically have drum brakes from the factory, save for the newest late-model disc-adorning versions, but obviously there are a lot of guys out there upgrading to discs on the older ones.
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.
How do you find out what differential I have?
If the ID tag or stamp is missing or unreadable, differentials can be identified by the number of cover bolts, the distinctive shape of the cover, the number of ring gear bolts, and ring gear diameter. They can also be identified by whether the center section is an integral or dropout design.
How do I know what size rear end I have?
Measure the diameter of the ring gear. This measurement equals the size of your rear end. Count how many bolts are on the inspection cover. If you have 10 bolts, then your Ford has a 7.5-inch or an 8.8-inch rear end.
How do I identify my GM differential?
Without an ID tag, differentials are identified by the number of cover bolts, the distinctive shape of the cover, the number of ring gear bolts, and ring gear diameter. They can also be identified by whether the center section is an integral or dropout design.
What does a full floating axle mean?
A full floating axle consists of a wheel hub assemble that is separate from the axle shaft. A spindle bolted to the axle tube supports the wheel hub by means of a pair of wheel bearings. Therefore, the weight of the vehicle and its cargo is transfered to the axle tube, rather than the axle shaft itself.
What does a Dana 80 come in?
ID A Dana 80 Rear Axle in Chevy, Dodge Ram, or Ford Truck IDN-126. Was: Dana 80 Rear Axles have been in production since the 1988 Model Year. They have been used in Chevy/GMC 1992-2002 , Dodge(1994-2002), and Ford (1988-current) trucks vans, and motorhome chassis.
What is the difference between a full floating and semi floating axle?
The axle shaft also rides on a large roller or ball bearing out at the end of the axle housing. For a full-floating system, the axle shaft only serves to transmit the rotational torque from the differential out to the wheel. It does not carry the weight of the vehicle as a semi-floater does.
What is a full floating rear end?
In a full-floating axle, the axle is not attached to the axlehousing at all
it is allowed to “float” inside the axlehousing. A tubular shaft is mounted to the end of the housing and acts like your front spindle, only it is hollow to allow the axle to meet up with the wheel assembly.
How heavy is a Dana 44?
A stock TJ Dana 44 rear axle tips the scales at 221 pounds versus the Pro-Rock 60’s 338 pounds. Up front the factory TJ Dana 30 weighs in at 238 pounds and the Pro-Rock front a portly 473 pounds.
How many teeth does 4.10 gears have?
Example: 4.09 / 4.10 / 4.11 Gear Ratios
|Axle||Ring Gear Teeth||Final Ratio|
|GM 10.5″ 14 Bolt||45||4.09|
How do I find my axle gear ratio?
Method 1: Count the number of teeth on the ring gear and the pinion. Divide the number of the ring gear’s teeth by the number of the pinion’s teeth. This will give you the axle ratio.
How do you find the rpm of a gear ratio?
The general rule is – large to small gear means ‘multiply’ the velocity ratio by the rpm of the first gear. Divide 60 teeth by 30 teeth to find the velocity ratio. Multiply this number (2) by the rpm (120). This gives an answer of 240rpm.