What do I torque exhaust manifold bolts to with an alum gasket?

[cwest]

I just put new exhaust manifolds on my stock 350.  Per suggestions from the forum I got aluminum gaskets.  The alum gaskets are thicker than normal gaskets and seem to squash down as I torque the manifold bolts.  I assume this is normal, but is there a specific torque spec for those type of gaskets?

[bake74]

     That is hard to say to an exact amount.  Each manufacture states a little different.  Look through this torque spec sheet from Fel-Pro, it should give you a idea.
     I would venture to say that when it starts to compress, then go a little more and you are good.

[cwest]

I couldn't find the specs on Mr Gasket website or anywhere else, so guess I just reasonably tighten them and see how it goes!

[bake74]

     In our tech section, there is our truck manuals, in your corresponding year of truck it should give you the torque value of the exhaust manifolds.  A generic Chevy engine spec is 25 ft lbs, which I found on the boxwrench site for torque specs for a small block Chevy engine.