hey all I keep blowing freeze plugs and im kinda dumbfounded. could there be and obstruction in the water return? or could this be a bigger issue?

Not quite enough information.
How is the cooling system plumbed?
Headers or logs and snails?
And what pump, and any mods done to the pump?
What is your water temperature at idle, and cruising?
Sounds like getting too much pressure.
Why is the question.

Dan'l