Intake manifold gasket installation help
So I got back to work on the 273 over the weekend. I decided to go with using the FelPro cork gaskets under the ends of the manifold along with RTV in the corners. I also used 3M 08008 black weatherstrip and gasket adhesive to tack the cork in place and a bit on the top. I decided against using just RTV and no cork because I was concerned about the gap between the manifold and the block (pictured). In addition, paint doesn't stick well to RTV (silicone) and didn't want a gap of black showing through in time as the paint flaked off. I expect the cork will hold paint better than the RTV, and I trimmed the excess cork off. All the bolts were torqued to 23 ft/lbs (270 in/lbs per manual) and it laid in nicely.
So I got back to work on the 273 over the weekend. I decided to go with using the FelPro cork gaskets under the ends of the manifold along with RTV in the corners. I also used 3M 08008 black weatherstrip and gasket adhesive to tack the cork in place and a bit on the top. I decided against using just RTV and no cork because I was concerned about the gap between the manifold and the block (pictured). In addition, paint doesn't stick well to RTV (silicone) and didn't want a gap of black showing through in time as the paint flaked off. I expect the cork will hold paint better than the RTV, and I trimmed the excess cork off. All the bolts were torqued to 23 ft/lbs (270 in/lbs per manual) and it laid in nicely.