Re: [ihc] Different Axle Widths on T'All

["Joseph Shaw, II" <josephshaw@xxxxxxxxxxxxx>]

Yes, Allan-good point!  I did remember that the frames were changed with the
"model change" in '74.  Everything you said makes perfect sense-I had just
forgotten about it!

Thanks!

Michael


----- Original Message -----
From: "Allan Ericson" <lowvolt@domain.elided>
To: <ihc@domain.elided>
Sent: Friday, November 07, 2003 3:58 AM
Subject: Re: [ihc] Different Axle Widths on T'All


> The mounting points on the rear did not change until 74. I've swapped 73
> axles onto (one of) my 66 1200A travelalls, and I have a 1010 travelall
with
> the rear end from a 71 1200B. They are a bolt on swap. The 74/75 fronts,
> with disc, will also bolt on, but of course, brake system changes need to
be
> made to accommodate the discs.
>
> In 74, the spring perches were moved outboard, and there were top and
bottom
> perches available because the 2wd were spring under, whereas the 4x4 were
> left springover. It is most likely that you had an axle from a 100 or 150
> model where somebody simply just changed the springs at the same time, or
> some other similar scenario. The same frames were used from 61-73, and the
> location of the spring hangers did not change during that time. The frames
> were changed in 74, the engine moved back 6 inches, and the wheelbase
> lengthened 1 inch. The body stayed the same, but the front clip was also
> reworked somewhat.
>
> On the 4x4 models 1110 and earlier, the rear spring perches had lift
blocks
> built into them. This was because the 2wd front axle is a dropped axle
> design, and the 4x4 is a straight axle design. This gives a 2-3 inch
> difference in height. Part of this is made up by using longer springs with
a
> different rear shackle mounting point in the 2wd trucks. I have seen
varying
> sizes of these factory spring perch lift blocks. I have not paid a lot of
> attention to why, but I suspect that it was to compensate for the use of
> different suspension ratings. IH custom built the springs right on the
spot
> when required, and this may have been part of their methodology in keeping
> the frame level.
>
> -Allan