How can I tell what kind of differential I have?
How can I tell what kind of differential I have?
In some cases, a differential can be identified by the number of cover bolts is has. Count the number of cover bolts on your differential to help identify which differential you have. Some differentials have a dropout which bolts to the front of the axle housing. Check your housing to see if it has a dropout on the front.
How is the size of the rear differential determined?
The size of a rear differential, or rear end, is determined by the diameter of the ring gear inside the differential housing.
What do the numbers mean on a Dana differential?
The Bill of Material (BOM) number is used to identify Dana differentials. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. Traditional BOM’s are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61.
How do you find the diameter of a ring gear?
To obtain the ring gear diameter, simply place a tape measurer across the gear. This can be tricky if the ring gear & carrier are still in the housing. In some cases, a differential can be identified by the number of cover bolts is has. Count the number of cover bolts on your differential to help identify which differential you have.
The size of a rear differential, or rear end, is determined by the diameter of the ring gear inside the differential housing.
One way of determining your axle type and stock gearing is to look for an Information Plate on your truck, on the firewall (prior to 1989) or door jamb (1989-current). It will look something like this: C/TR/A/TM 138 HR11 G282 A130H or C/TR GJ7/KQ41 A/TM G251/R150F
How to identify a Dana or Ford differential?
Differential tags can easily be used to identify Dana and Ford differentials. The Bill of Material (BOM) number is used to identify Dana differentials. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts.
What’s the difference between 8 and 7.5 ” differentials?
The 8″ V6/Turbo axle is found in some turbo and V6 models, and is a little beefier. It is a 4-pinion design, whereas the regular 8″ is a 2-pinion design. Many V6’s had 2-pinion cases too. The 7.5″ differential is used in the front of IFS trucks (’86 and later).
