The Ford Barn

JHFORD51 · 02-16-2016, 07:46 PM

I have a 3.92 ring/pinion in my 51 F-1 Dana 44 differential. I am aware of the various alternatives to going faster (49-50 merc O.D., S-10 T5, 57-72 F-150 9"), in fact all of those components are at my disposal, in various states of repair and each presents their own set of installation "hassle". What I would like to do is install a 3.54 ring and pinion in my existing Dana 44 and leave the rest of the otherwise stock truck alone. Most of the parts I am seeing note the carrier may be different for 3.92/4.10 and numerically lower gear sets; no big deal as long as I know which carrier to look for. Most of the bearing kits also note 67 and up. Ford used this axle for a great number of years in trucks and broncos and I understand even some late model Jeeps still use variants of it but most of the 4x4 crowd around here doesn't know anything about the older stuff we like to wrench on. Has anybody done this recently that can share some info and avoid me repeating all of the market research?

Thanks in advance!

02-16-2016, 07:46 PM	#1
JHFORD51 Senior Member Join Date: Feb 2011 Posts: 253	51 and up F1 dana 44 gear swap I have a 3.92 ring/pinion in my 51 F-1 Dana 44 differential. I am aware of the various alternatives to going faster (49-50 merc O.D., S-10 T5, 57-72 F-150 9"), in fact all of those components are at my disposal, in various states of repair and each presents their own set of installation "hassle". What I would like to do is install a 3.54 ring and pinion in my existing Dana 44 and leave the rest of the otherwise stock truck alone. Most of the parts I am seeing note the carrier may be different for 3.92/4.10 and numerically lower gear sets; no big deal as long as I know which carrier to look for. Most of the bearing kits also note 67 and up. Ford used this axle for a great number of years in trucks and broncos and I understand even some late model Jeeps still use variants of it but most of the 4x4 crowd around here doesn't know anything about the older stuff we like to wrench on. Has anybody done this recently that can share some info and avoid me repeating all of the market research? Thanks in advance!