rear coil spring
 

have a 67 c10, the rear drop spring are CPP 603-5
truck has a lean to one side after installed,
truck was level with worn out stock spring
any way to check the spring may be too light
or any suggestions.

Re: rear coil spring
 

Sounds like a quality control issue to me. At least i hope so for your benefit, and nothing is twisted OR deteriorated body/BED mounts. Those springs are soft anyway unless you go with the HD version of the 603.... Return the springs and have a pair of new ones sent back to you. Hope this helps.