distributor springs

if i remember right with light mech advance you do NOT run any vac advance. your advance at cruse speed 50-60 MPH will be way to much. i found out the hard way. it will knock out the piston rings. over revving a stock chrysler engine will knock out piston rings all so. keeping a stock chrysler engine under stock RPM is a MUST. its NOT a race engine UNTILL YOU make it one.