1956 f100 ?s
#1
09-22-2016, 12:53 PM
#2
09-22-2016, 06:22 PM
Cargo Master
#4
09-22-2016, 08:34 PM
There are ring and pinion gear sets available from Summit and other sources for the Dana 44. According to previous posts they are pricey.
If you need something less then 3.73 you might need to replace the pumpkin
as well as the gears. That's why most folks switch to a 9."
If you need something less then 3.73 you might need to replace the pumpkin
as well as the gears. That's why most folks switch to a 9."What you are actually referring to is the 44's differential case that the ring gear bolts to.
4.09 and higher (numerically) ratios use a different case (1M-4205-A) than 3.73 ratio and lower (numerically) ratios (IM-4205-B).
Carrier aka pumpkin shown as 4141 in 9" pic:
#5
09-23-2016, 10:53 AM
Yes a 9" is a direct replacement for the Dana but you may need to have your driveshaft length adjusted. I needed a longer driveshaft on mine.
61.25 1957-1972 Ford F-100 Pickup
61.25 1960-1964 Ford Full Size
61.25 1971-1973 Mustang
61.25 1967-1973 Torino, Ranchero, Fairlane
OBTW you will need one out of a truck to keep your bolt pattern. Several car models will work but they don't have the 5 X 5 1/2 bolt pattern.
61.25 1957-1972 Ford F-100 Pickup
61.25 1960-1964 Ford Full Size
61.25 1971-1973 Mustang
61.25 1967-1973 Torino, Ranchero, Fairlane
OBTW you will need one out of a truck to keep your bolt pattern. Several car models will work but they don't have the 5 X 5 1/2 bolt pattern.
Last edited by bjmayberry2; 09-23-2016 at 11:00 AM. Reason: Added 9" donor vehicles.
#6
09-23-2016, 03:10 PM
Fleet Owner
There's more to it than the driveshaft, but mostly "little stuff". The axle tubes are larger diameter, the spring pads are a different width, etc. etc. Many, many threads on here, if you search.
Not often mentioned but there is no way to get the stock speedo to read correctly if you drop below ratios that were available from the factory, other than a ratio adapter that mounts in the cable and is $$$$. You can't just change a cheap gear in the trans to correct it.
Not often mentioned but there is no way to get the stock speedo to read correctly if you drop below ratios that were available from the factory, other than a ratio adapter that mounts in the cable and is $$$$. You can't just change a cheap gear in the trans to correct it.
#7
09-23-2016, 05:13 PM
Not often mentioned but there is no way to get the stock speedo to read correctly if you drop below ratios that were available from the factory, other than a ratio adapter that mounts in the cable and is $$$$. You can't just change a cheap gear in the trans to correct it.
And here's a site if you want to figure out what number of teeth you need with a certain size tire & rearend ratio. Speedometer Gear Calculator and Charts - TCI® Auto
Thread
Thread Starter
Forum
Replies
Last Post
jays '56 f-100
1948 - 1956 F1, F100 & Larger F-Series Trucks
9
03-14-2019 08:34 PM
dadgonebroke
1948 - 1956 F1, F100 & Larger F-Series Trucks
4
07-08-2015 12:10 PM
Cowboy_Rick
1948 - 1956 F1, F100 & Larger F-Series Trucks
16
07-14-2003 06:58 PM