we've covered this before a few times... try a search.
here's one result https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=541056#Post541056

Here's some info for those that think it's a good idea..
http://www.freightlinertrucks.com/trucks/featured-components/axles-suspension.aspx
I've got a picture of one from a trucking show a few years ago, let's see if I can find it.

I still don't think it's a smart thing to do.

Grigg

Last edited by Grigg; 10/02/2009 5:40 PM. Reason: add link from search
•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-