C10 air ride
 

Picked up a 70 c10 for $100 and have a new set of firestone air bags. I'm gonna throw em in but I'm thinking about the trailing arms. Do they need modified, and if so, why?

Re: C10 air ride
 

No, trailing arms don't require 'modding' to utilize bags. Modifications will depend on what the goal/direction is for the truck.
The farther from stock you go, the more things will require changes.

Re: C10 air ride
 

The only "mods" would be brackets to mount them.

Which depending on which bags, and intended purpose. I have seen people off set them to the inside, or go behind the axle.

Then rather static or bagged. Shock relocation or extended brackets may need to be fabricated or purchased. To put the shock back into its happy zone.

My static 3/6 drop truck. Flipped hanger, removed leafs, and axle flip in the rear. Sectioned cross member front, and trimmed springs front.

Required all the shock mounts to be extended. As when I got my lazy a** to it. It rode so much better, and handled a bit more predictably.

Re: C10 air ride
 

No brackets needed on trailing arms. Bolt in to place on the arm and drill 3 holes on the frame side ( 2 mount holes and 1 air fitting hole).