03-30-2019, 07:59 PM
If it's sagging without load, have the leaf springs 're-arched.' If it's sagging with load, have leafs added to the springs.
A spring shop will do this, and in my experience it's very reasonable.
Full frame vs. unibody is an academic discussion- it has zero bearing on performance or durability of passenger type/LT vehicles.
As Black shared, a unibody is just as the word suggests, the frame and body are combined. Strong and light.
A separate frame is used when the chassis will have various conversions; so a truck (or van nose) might have a flatbed, camper, cargo box, or special utility box.
You can't do that with a unibody, because it wouldn't be a unibody.
In short, unless there's massive rust or overloading, neither a frame nor a unibody is going to fail under normal use.
But, some idiot can break anything:
Pictures of Broken Full Frames
The quarter panel on most vehicles is near impossible to replace. This would hold true for a '58 full frame Buick, as a 2019 unibody Buick
A spring shop will do this, and in my experience it's very reasonable.
Full frame vs. unibody is an academic discussion- it has zero bearing on performance or durability of passenger type/LT vehicles.
As Black shared, a unibody is just as the word suggests, the frame and body are combined. Strong and light.
A separate frame is used when the chassis will have various conversions; so a truck (or van nose) might have a flatbed, camper, cargo box, or special utility box.
You can't do that with a unibody, because it wouldn't be a unibody.
In short, unless there's massive rust or overloading, neither a frame nor a unibody is going to fail under normal use.
But, some idiot can break anything:
Pictures of Broken Full Frames
The quarter panel on most vehicles is near impossible to replace. This would hold true for a '58 full frame Buick, as a 2019 unibody Buick
Sometimes dweller in 237k miles '07 Grand C-van w/ a solar powered fridge and not much else
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