ok,how do you set one up???

stock 78 440 from a motorhome

650 spredbore mech double pumper carb

stock spredbore intake

center dump mannys

stock 727 with stock TC..full manual vb

8 3/4 with 3.91s

88 short bed truck

once its in hand,I pull the points dist out,drop in the duel point dist with mech advance only

set timeing to same setting as it is now with the single points?

what else do you do to dial it in?

does it need a speical coil to go with it

any gain going with the duel points over a single set?

need some skoolin on the how to set it correctly

or do I even need it??

what advantage does it have performance wize over a single set

no I dont want elect mopar dist

The benefit of dual points verses single point distributors is a longer dwell time with the dual point set up. This gives the coil primary windings a longer saturation time of the secondary windings in the coil and a hotter ( higher voltage ) spark. If your existing dist has no problem lighting the plugs, you will see no ( or very little ) benefit. Obviously, if the motor is modified enough to put the stock ignition on the ragged edge of being able to fire the plugs, it will help going to the dual point system. You would also have to upgrade your coil accordingly to get full benefit of that change. You could run it with the stock single point coil, but it's life will be shortened. The advance curve will depend on the application - street, strip, light / heavy car, manual, auto, gear ratio, ect.

I agree with Crizila, you also need to set your timing, at "total", a hi-perf Mopar, Blaster MSD, or Accel coil will work fine.