Just finished doing a complete overhaul on the vortec 454 in my plow truck. Did everything from the head gaskets up. It was using a small amount of coolant before all the work which I knew was the intake gasket as its a common problem on the vortecs. Kilpatricks recommended a fel-pro gasket set that has updated intake manifold gaskets. Installed the new gasket to the torque specs in the GM service manual(first pass at 22, second pass at 30 ft lbs) And the damn thing leaks bad, way worse than it was before. Its dumping coolant into the lifter valley into the oil.
Is there a trick to putting these things on? I read that most leaks are from over torquing the bolts and breaking the gasket. I don't think thats the issue being that it was done with a torque wrench, by hand, per the book.
I'm planning on taking it back off some night this week, taking a look at the gasket. The old one that I replaced you could see where the gasket blew out around the front coolant port. I'm thinking if the new gaskets still look ok, just RTV the crap out of the coolant ports and put it all back together again?
Any one have any advice here?