Hello I wondered if the rear axle on my ford 1954 was in cast iron or iron? I have to weld on the system "Weld-On 4-Link" on this last one and if it's in cast iron, I can't. Thanks, Rémi.
Most likely the center section (where the ring and pinion and differential are) is cast iron, and the axle tubes (where you would attach spring perches or 4-link/ ladder bar brackets) are steel...