Originally Posted by laxking012
Was looking at cages on S&W website for my 1991 s10, there's EWS and DOM mild steel. I've always heard DOM is stronger and better, but on website it says "Do not recommend DOM tubing for drag racing applications". Why is that and should I just get the EWS?
I built racecar chassis for several years & always used .120 DOM when I had a choice & never had a chassis fail certification. The DOM is much more consistent than the cheaper stuff. Actually the reason for using .134 is it is more inconsistent & is also much heavier. I would recommend talking with the NHRA Chassis inspector beforehand as there are variations from person to person in how they approach Certification.
There is undoubtedly a good reason for the disclaimer from S&W but unless something drastic has changed the DOM is better tubing. Your bender can also affect the thickness of the outside radius.