The Jalopy Journal
Discussion in 'Traditional Hot Rods' started by Piewagn, Aug 2, 2019.
Anybody ever use one of these earlier Mopar manual steering boxes on their A build??
I'm using one on my T coupe. Don't understand why no one else seems to have latched onto these. They have a Pittman arm that looks like a F-100 and a spline end that will work with practically any steering column and were available up to 1971. The only awkward part is that they take a larger tie rod end than the usual early Ford units but still take 11/16 NF thread. I think it is vastly overlooked.
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Looks like a nice box.
It looks to me like the rag joint would make these just about universal and make it easier to line up the shaft with the box. And a steering shaft/column like F-100 (early enough to NOT have a key in the column) that came from a floor shift truck would be easy to connect to this and look perfect with a shortened turn signal lever.
Can we assume that rebuild parts would still be readily available for these? Or were they bulletproof since they came in trucks; therefore probably not needing to be rebuilt?
I may give this a go....it looks low profile enough to not be in conflict with header. My other route would be the cowl steering set up....
The only problem I saw (had) with this box in my Dodge pickup is the number of turns lock to lock which is typical of a truck box (a lot of turns) in order to make turning resistance with a load better. I changed this box out for a Toyota box with fewer turns.
they are 22 to one ratio
the helical worm is mopar only to the right - not the same as chevy Saginaw - left
the pitmann arm points upwards - the other way to a 64 f100 = down
the sector shaft is too short for a boxed frame
they can be reversed. - so the 2 bolt holes point rearwards
they basically have 525 Saginaw internals -although slightly different
you could fit the input worm from an aluminum mopar box in them for a higher ratio - if you can find one...
I don't think you can mix these with Saginaw 525 or fords mustang 68 manual boxes, the mesh isn't in the correct place.
be carefull too as I think the input spline although 5/8 36 is specific to mopar
they are 1 1/16 out - I think
using the core fitted with a 16-1 vette worm, 525 chevy splined sector
the pitman points down but is still correct - push pull
you could fit a pre 64 combined shaft find the screw on bearing housing end that takes a column - f-100 does not fit them
the physical layout is real good for an open frame though
I have a real good one in bits with the worm reversed if anyone in the uk wants it
also have a 16-1 vette worm and a 525 splined sector
oh and a complete c10 4wd manual box
oh and a couple of rhd 37/8 steering boxes
oh and a recon 900 series c10/20 4wd box
Don't really know anything about the specs of the box but here is a picture of mine.
What, if any mods did you have to do to fit it inside that rail??
I poked a hole or two.
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