Hi,
Randy's Ring & Gear Internet site shows a table of ring & pinions that fit inside their 10.25" differentials. One of those listings is for a Ford OEM 3.07 ratio gear set that is not an after market gear maker's product. I called them by phone and asked about that listing. The expert with whom I spoke said these were options in certain Broncos but Ford sold all they produced and none of them are available as new units any more. Instead, we can buy an aftermarket 3.07 ratio gear set which he thought might be a little noiser but very durable.
I formerly thought all Bronco rear ends had smaller ring gears than these 10.25 inch units. Can anyone tell me what years these were in and what axle code numbers were used to identify these big tall-ratio differentials?
My objective is to fit one of them into my 1995 F-250 5-speed PowerStroke to gain low rpm highway cruising and improved mpg. Another person bought the aftermarket 3.07 gear set for his F-350, and with other modifications now averages just over 26 mpg in his 100 mile per work day driving schedule. So I know it works, but I would prefer to swap-in a used rear end rather than have mine rebuilt.
Anybody have that axle code number so I can ask for it at on-line salvage yards?
John
Randy's Ring & Gear Internet site shows a table of ring & pinions that fit inside their 10.25" differentials. One of those listings is for a Ford OEM 3.07 ratio gear set that is not an after market gear maker's product. I called them by phone and asked about that listing. The expert with whom I spoke said these were options in certain Broncos but Ford sold all they produced and none of them are available as new units any more. Instead, we can buy an aftermarket 3.07 ratio gear set which he thought might be a little noiser but very durable.
I formerly thought all Bronco rear ends had smaller ring gears than these 10.25 inch units. Can anyone tell me what years these were in and what axle code numbers were used to identify these big tall-ratio differentials?
My objective is to fit one of them into my 1995 F-250 5-speed PowerStroke to gain low rpm highway cruising and improved mpg. Another person bought the aftermarket 3.07 gear set for his F-350, and with other modifications now averages just over 26 mpg in his 100 mile per work day driving schedule. So I know it works, but I would prefer to swap-in a used rear end rather than have mine rebuilt.
Anybody have that axle code number so I can ask for it at on-line salvage yards?
John
