( H6 ) - is a 3.73 limited slip differential on a Ford truck / SUV
I did a Google search and found a couple of entries that show a 1984 F-150 " H6 " as being a Ford 9 inch limited slip differential with a ( 3.50 gear ratio )
On a 2003 Ford Explorer : Open the drivers door and there is an information sticker on the latch pillar You will find the axle code under " axle " Once you have the axle code you can determine the axle ratio
According to the ( 1996 ) Ford Bronco Owner Guide : Axle code ( 19 ) is a Ford conventional ( non Ford Traction Lok / limited slip ) axle with a 3.55 ratio
According to the 1996 Ford Ranger owners manual : Axle code 82 is a ( 3.08 conventional ) ( not a traction-lok )
On a 1997 Ford Crown Victoria : Axle code X5 is a ( 3.27 ratio , limited slip )
Ford Expedition Axle Ratios Look for the vehicle certification label on the driver's door. This label will say "MFG. by Ford Motor Company" at the top, and will list front and rear GAWR, tire pressures and will show a bar code. Below the bar code find a grouping of terms including AXLE. Directly below this word is the axle code: 17 = 3.31 non-limited slip 19 = 3.55 non-limited slip H6 = 3.73 limited slip H7 = 3.31 limited slip H9 = 3.55 limited slip Here is a link to "most" axle codes. "http://www.drivetrain.com/Fordtrkratio_posidata.html"
CG is 3.31
I believe the axle code is listed on a sticker on the end of the drivers door The axle code will correspond to an axle ratio Once a person knows the axle code , the ratio can be looked up
I believe axle code 19 is for a Ford conventional axle ( non limited slip ) with a 3.55 ratio
4.10 limited slip
3.31 ratio