Blown head gasket needs to be replaced.... Whats the best way to get the head off? do i need to take the intake and exhaust manifolds off after the head is off?? its dohc on a 2.0L......also do i need to remove the cams to get to the head bolts?

The intake and exhaust manifols are both attached to the cylinder head. Sneaking the head off withboth attached, is done, but you really want to know why that gasket went out. I would suggest removing both manifolds after you get the head out, and bringing the head in to a good engine machine shop, for surfacing and pressure testing. You will need to remove the cams. Make very sure that all cam caps go back on in the same position, as these are align bored, and are not interchangeable. Does your engine run hot? Is that why the gasket failed? If so adress that too, or you will be taking this journey again. Good luck, and contact me if you have any more questions. Buy one of those Haynes manuals, unless you have access to a good online repair data base.

Yes indeed your intake and exhaust manifold will get disconnected first the head will come out after if bolts is under cam and that is the only way to get to the bolts by taking the cams off mark both cams location before taking out on the cam sprocket and the head to reinstall back in place

I ahd the same issue with my dodge journey and yes i had to take the manifolds off. the case shouldn't be any different with ur avenger.