Should you use silicone on an intake manifold for a Chevy sb 350?

It is generally not recommended to use silicone on the intake manifold of a Chevy SB 350 engine. Some people may use a thin layer of silicone as an additional sealant at the corners where the intake manifold meets the cylinder heads, but this should only be done as a last resort. Proper installation of the intake manifold with the recommended gaskets and torqued to the specified torque values is typically sufficient. Excessive use of silicone can cause issues such as leaks or blockages in the engine's coolant passages.