To Vacuum Advance or Not to Vacuum Advance
Got me curious as to what Plymouth's vacuum advance was for that '67 273 Power pack.
Wow! Big difference compared to the '68 2bbl 318. It adds in more advance at lower vacuum.
We can also guess from this that it ran lean and mean at even 3/4 throttle;
with power enrichment on this engine probably at or below 6"Hg.
Got me curious as to what Plymouth's vacuum advance was for that '67 273 Power pack.
Wow! Big difference compared to the '68 2bbl 318. It adds in more advance at lower vacuum.
We can also guess from this that it ran lean and mean at even 3/4 throttle;
with power enrichment on this engine probably at or below 6"Hg.
