Stock Hemi Vacuum ?

[ws23rt]

My 69 Hemi now has around a hundred miles on it. It starts easily and idles down to 800-900 by the factory tac.
It runs around 170 degrees by the dash temp gauge. All seems fine but I put a vac. gauge on the port that feeds the vac. advance in the dist. (A small tube on the fitting that the brake booster connects to).
The reading shows 6-7 inches vac. at idle.  Is this too low?

[firefighter3931]

Try checking the vacuum at the base of the carb  That number does seem low 

Vac advance should allways be used on a ported vacuum source ; no vaccum at idle but vacuum as engine speed increases. 


Ron