i installed the gm fast burn heads on my new 350 i torqed them to regular specs they leak out of the back corners does alum. heads require a higher torq. spec

Greg,
The torque should be the same, 75 lb ft. Are you sure you used the correct gaskets etc ? Did you use sealer on the bolts ? Washers on the bolts ? Any chance the bolts are bottoming out on something ? What is leaking...water ?

Originally posted by gregmontgomery:
i installed the gm fast burn heads on my new 350 i torqed them to regular specs they leak out of the back corners does alum. heads require a higher torq. spec I'd pull the intake and make sure that you don't have a leak (between the head and intake) that's running down and looking like it's leaking from head/block interface.

I say this because I put new aluminum heads on my engine and it leaked coolant from the rear passenger side. After investigating, I figured out that there was a bad seal between my intake and heads. I also did not apply gasket sealer around the coolant holes the first time like I should have but did so the second time and so far I've had no leaks.

Just thought I would tell you my story. I'd hate to see you pull the heads when you may only need to pull and reseal the intake.

Good luck and let us know how you make out.