vacuum port
When hooking up a vacuum gauge on a 454 tbi engine can you hook to any port on the throttle body or does it have to go straight into the intake manifold?
Forum Discussion
- What about the pcv valve.my unit is a 93 454 tbi
- There is also ported vacuum off of the throttle body. You don't want that.
- Intake manifold is always best, there are mass airflow sensors, throttle bodies, vacuum sensors, and yadda yadda on the new engines.
