I have done Econoline type beam axles before, z-cutting, and fishplating the weld, but what are you guys take on narrowing a straight tube axle ???
You should be able to slug it. I wouldn't be afraid to. Edit: spell check kicked my ass again I should have read wouldn't not would.
I had Challenger make me one of their 4 inch dropped 1/4 wall tube axle to fit my Vega. They didn't care how wide I wanted it.
Challenger Sprint cars was Ken Jenkins' company. Unfortunately Ken passed away about 3 or 4 years ago. But I guess you could contact other sprint car chassis builders.
I agree! Rootie posted a great tutorial. Never done a tube axle but that's exactly how I shortened the hollow steering shaft on my AV8. Regards, Dave.