again this is about my engine with 8000kms and blown head gasket. should the head bolts be replaced with new ones when it goes back together or can I reuse the same ones?

thanks

 

They're one of those things that you can re-use in all honesty because yours are not torque-to-yield bolts.

But they're also one of those things that are "50$ now, or potentially lots more than 50$ hassle later."

I would get new ones.

 

for stock applications i never replace them and far as i know have never had a problem

 

I agree; for stock applications, they're good for a couple of uses at least. There's 17 of them per head, which is really more than necessary. There's not a whole lot of stress on them in a SBC.

If you're boosting or spraying or using extremely high compression, replace them.