Rust prevention from the inside out

There have been lots of attempts. In the mid-'70s, the method was to drill the POCA- recommended drain holes in the rear rails and the bottoms of external 'horse-shoe' a-arm braces, plug them all and fill the rails to the brim with drain oil! After a few hours of soaking, pull the plugs and drain. Leave ALL the plugs out for driving, too. Other people have uses wands attached to sprayers etc. Only the first method guarantees complete coverage, though. And you don't necesarily need to use drain oil. But you do need the 3/8 or 1/2" drain holes-3 in each rail (6 total) and one in the base of each a-arm horseshoe (4 total).

any diagrams for placement of these "holes"?--so as to not damage the integrity of the frame??

See if this helps: http://www.panteraplace.com/page57.htm

Lots of information available at: http://www.panteraplace.com Thanks to Mike Dailey.

Sure. The placement was worked out in the '70s before I got my Pantera, but the actual locations had never been illustrated, only described. So in the Dec '02 POCA news, I wrote an update with illustrations of the rear subframe parts showing the recommended hole locations.

I dont know much about them but there is a rust prevention company called Ziebart. They drill holes in the frame and fill the cavities with a rust inhibiting foam. My Camaro had the treatment and had no rust but it was a Louisiana car. Anybody have any experience with them? http://ziebart.com/

sure wish I had a copy of that article

Ziebart has a good reputation in the anti-rust field, but I'd be VERY careful of foams in the rear subframes. That was a semi-popular 'upgrade' in the early '80s, that turned out to nearly destroy a few cars. The foam used was polyurethane, and like all foams, it shrinks slightly over time. Water then channels around the foam to sit forever underneath it, in contact with the frame bottoms. THe foam prevented it from evaporating..... The affected cars rusted through the bottoms of the subframes, and had to be extensively (and expensively!)rebuilt.