Typical vacuum for a 400 ??
I have set my timing and the car feels strong: initial timing 14 IIRC and total timing is 34/35. My problem is I then checked my vacuum at two locations and am only getting like 13" at idle. The car doe not sound like it has a cam in it, but based upon the heads (low compression 14s) and how it pulls, I am going to guess it has something special.
My question is what do these cars typically see for vacuum ? Thanks
1965 GTO Convertible 3 speed tri-power drum brakes originally
400 cu in with tri-power
4 speed Muncie