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Truck Rear End Specifications
- 04-29-2008
- Allen Siekman
April 29, 2008, 10:09 am
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Thanks so much for all the input on replacing the rear end in my '51
2R truck.
I found a couple good used 9" rear ends from Fords locally, and also
found a shop in Iowa that will build me a unit using a reconditioned
center housing, but everything else is new. The will build it to my
specifications including perch width, shock mounts, gear ratio, and
new axles, posi-traction, bearings, seals and the works. This at $1600
delivered to my door in California. This is about $1200 cheaper than a
similar unit from Curry.
I am thinking about going that route, but I could modify a used one
myself by moving the perches and putting in new gears.
Does anyone has the following information?
- Spring Perch angle relative to the input shaft?
- Width of the stock rear end outside drum to outside drum (right
where the wheel bolts on)?
I do not have a stock rear end to measure so I am a bit at a loss on
how to get that information. I will need it to spec out the rear end
should I buy the custom one, and also for moving the perches on a used
one if I go that route.
Thanks!
Allen
Re: Truck Rear End Specifications
Maybe I'm missing something, but I thought you already had a Ford rear
under your truck? Why not simply grab a new center section from a
junkyard, replace the bearing that grenaded and keep on driving? or are
you attempting to correct the bolt pattern at the same time?
nate
--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel
Re: Truck Rear End Specifications
drums in place to measure the width, but drum-to-drum measurement will
be very close to the published track width of 59 9/16". I don't see a
pinion angle published in the 2R spec book, but in the 7E book it is
shown as 5=BA up.
If you don't mind the tapered axles, the easiest and probably cheapest
way to fix this is to find a 1955 or older Stude pickup rear end and
install the carrier and ring and pinion from a car model 44 rear end
to get a cruising gear ratio.
In 1956 the bed and rear axle was widened 3". They will work too, but
keep you from using a real wide wheel.
Re: Truck Rear End Specifications
Thanks so much for your reply.
I found a rear out of a 53 truck and the fine folks at Studebakers
West tell me that they have a NOS set of gears in the 3:92 ratio. I
think that the 2.5% change in RPM will drop my revs at highway cruise
just enough to perhaps make a slight difference in economy, but are
not so different that it will effect the hill climbing and performance
with load since I am running a '62 289 in the truck.
I am thinking of putting on a 4-barrel manifold with a small
Edelbrock carb as others keep telling me that unless I hot rod it, the
4-barrel is actually a bit more economical at low speeds but helps a
ton when you need the power for hills and passing. Any thoughts on
that?
I think your advice is perfectly on target. I will start the process
of getting the rear end and parts.
Thanks again.
Re: Truck Rear End Specifications
a properly adjusted 4 barrel is FAR BETTER in economy than a 2
barrel.
emphasis PROPERLY adjusted, and to ME that means having access to
certain equipment and re jetting down to the best level of fuel/air
mix for the BEST possible economy.
--Shiva--
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