flow plates. These plates will increase the flow on your cast iron
production heads up to 15 CFM by flattening out the floor from the
short side radius to the exhaust. The plate bolts between the head
and exhaust requiring two exhaust gaskets on each head. Final fitting
into the runners will need to be done with hand tools to allow for
the closest fit possible in the head being used. DO ONE RUNNER AT A TIME. This is a time consuming job but very high horsepower to dollar
return. Made from .048 thick stainless steel. Will work with
headers or cast iron exhaust manifolds.