boilermaster
Well-known member
Hello,
Currently running a Mallory unilite distributor with mechanical advance only.
Been looking at a DUI duraspark distributor and MSD box.
I have a very good idea of the mechanical aspects of what for a curve, but what about the vacuum curve .
I am running 351 c 4v with open chambers, 9.6 cr and a toploader. .370 rear axle w/255/60 r 15 rubber
am pulling 17'' vacuum @16 degrees and 38degrees all in.
Camshaft is 223/223@ .050 on 114 lobe centers.
Engine runs quite well for what it is, but I am feeling that I could do better with a little vacuum advance .
Problem is the stock vacuum advance back in the day was for 8 degrees btdc ? or so.
Almost no one uses those specs today.
So what do we have out there fellas ? full or ported and how much ?
boilermaster
Currently running a Mallory unilite distributor with mechanical advance only.
Been looking at a DUI duraspark distributor and MSD box.
I have a very good idea of the mechanical aspects of what for a curve, but what about the vacuum curve .
I am running 351 c 4v with open chambers, 9.6 cr and a toploader. .370 rear axle w/255/60 r 15 rubber
am pulling 17'' vacuum @16 degrees and 38degrees all in.
Camshaft is 223/223@ .050 on 114 lobe centers.
Engine runs quite well for what it is, but I am feeling that I could do better with a little vacuum advance .
Problem is the stock vacuum advance back in the day was for 8 degrees btdc ? or so.
Almost no one uses those specs today.
So what do we have out there fellas ? full or ported and how much ?
boilermaster