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View Full Version : Z-21 Exhaust Manifold Leaking



DTM
09-07-2003, 09:31 PM
I have a '87 Z-21 SB that the port exhaust manifold has a small drip coming from the bottom. It look like I have a cracked manifold.

I am thinking about install Stainless Marine manifolds but was wondering what performance improvements I might see as teh rest of the engine is stock.

Also thinking on install "silent-choice" as it is thru-hull exhaust and is a "little" loud for the marina.

Any input will be helpful.