OK, why would that matter? It just stops or restricts the flow in the loop doesn't it? I installed it in the hose that goes from the intake on the 350 engine.
1953 Chevrolet 3600 Fried Green T'mater (Vern) In the Stovebolt Gallery Caution: Political Statement Man who runs in front of car gets tired, man who runs behind car gets exhausted.