Cruise Seems Lean

Mattax,

Sorry your post #101 on vac adv is totally incorrect. Set any Chrysler 6 or V8 engine to the factory initial 6-12* timing. With the engine idling, turn the dist slowly to advance the timing. Idle rpm will increase [ more hp ] & vacuum will increase [ increased efficiency ]. To do this, one could use more init timing....or use vac adv connected to man vacuum to get the reqd amount of timing for best idle.
The exh dilution of the mixture at idle & low rpms [ even worse with increased cam duration, the rough idle ] requires more time to burn as efficiently as possible, & that includes Chrysler engines, & this is achieved by more timing at idle.