Intake manifold studs

[millarg]

Removing the CIS system from my 78SC,

4 of the 12 nuts came off with the stud attached.

Is this common?
Should I reuse the studs?
Is it recommended to replace all of the nuts when putting the intake back on the engine?

Thanks in advance,

[bullethole]

Use new.. use RED loctite into the block. I put a little antisieze on the outside threads, but many will tell you that this messes up your torque values

[JJ 911SC]

Very common with the Exhaust one but 1st time I read about the ones from the Intake.

I use new nuts when I put mine back on.

[millarg]

Many thanks guys.