Thanks for the information..... I have a 87 Chrown Victoria 5.0L in my 65 Mustang. It came to me with the PCV hooked up to a vacuum port and it didn't look right to me. The filler cap hose go's to a port on the throttle body. Can I just "T" into that hose? Jerry
The hose connected to the filler neck should be connected to the air intake hose between the air filter and the throttle body NOT NOT a vacuum source. The smaller hose from the PCV valve does go to intake vacuum.