Constant or Ported Vacuum Source for Distributors? ...AGAIN!
Use whichever one you want and tune accordingly.
Yes, your choice, our choice, etc...
I didnt wanna pay for the vac can version msd, i bought the "race parts" version..lol...gawd, idiot writer, i fkn built it to go fast...not save the planet or hang back in the dust with "chevy techs".
I love the part where chvy says.."ported vac retards timing from its optimal value" lol, yeah because at idle you want 48 degrees, right? Why does my idle speed not adjust lower anymore..
I guess all those 60's holley and carter carbs are a fairy tale. If i ever build another "next to stock" motor for myself, ill use the ported vac advance!
