advance or retard

[greg]

anyway to tell if ive got a vacumn advance ,or retard dist,without a carb installed?

 

[spotcruiser]

Look at the advance diaphragm of your distributor. There is a crimp around the middle of the diaphragm. If the vacuum hose fitting is between the crimp and the distributor body, it's vacuum retard. If the vacuum hose fitting is on the other side of the crimp from the distributor body, it's vacuum advance.

Some OEM LC distributors have vacuum advance and retard (vacuum fitting on both sides of crimp). Some LC distributors have vacuum advance and High Altitude vacuum advance (two diaphragms with the vacuum fittings on the forward side of each diaphragm crimp).