55 series steering box and 40 series box.

jessie928 · 09-28-07, 05:51 AM

gidday guys,

whats the difference between a 40 series steering box and a 55 series box?

is the mounting angle/bolt pattern the same? do they interchange ?

Jes

Mark W · 09-28-07, 11:45 AM

Externally identical and interchangeable. In the OEM PS boxes, IIRC the '55 box is a variable ratio and the '40 box is not.

Mark...

jessie928 · 09-30-07, 06:56 AM

cool,
thanks for the info

Cheers,
Jes

jessie928 · 10-01-07, 03:12 AM

i got this from the iron pig guys

Quote:

Originally Posted by snailwagon

Main difference is the mounting angle of the box, the 40 is flat mounting, the 55 is angled. Another "not interchangeable" without modifications.

hmmmmm?>?

JEs

Mark W · 10-01-07, 01:54 PM

That is wrong.

If they weren't interchangeable than I would have been unable to interchange them.

I have swapped them a couple times at least.

It's the mini-truck box that is almost the same but has a different mounting angle. That's why you have to swap in a different pedestal when you do a mini-truck PS conversion.

Mark...

jessie928 · 10-01-07, 03:29 PM

cool, i thought as much

Thanks,
JEs