Okay so im pretty sure that the 78-79 ford f-150 front axles are cast right? When you do a sas and have to weld to the axle do you have to do anything special before you weld? Ive heard that you have to heat it up first and let it cool very slowly. So my question is how do you weld to cast?
Thanks
Rob

 

you have to preheat cast steel to weld it...

 

I'm pretty sure that you need to weld it with nickel rod from a stick welder. That's only if you are welding to the center section. If you are welding to the axle tubes you should be alright I think

 

Ya im welding to the tubes.

 

as long as your not welding on the cast C wedges for the radius arms, its just normal welding. but if your welding to the C's then they are cast and need extra work.

 

So just welding to the tubes you dont have to do anything special its just like normal welding?

 

tubes are fine, but be careful not to get carried away and warp them...

 

that is some serious carrying away! lol

 

some people here shouldnt be welding as well. (not you)

 

warp the axle tubes? you do know most of the 78-79 f-150 axle tubes are 3/8 thick wall,i do not think warping will be a problem

 

Okay so welding to the tubes should be no problem then?

 

right no problem