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Magnetos

Basic Mag Requirements - Points type:

--------------- for continuous use -------------

  Vertex Mallory MSD
Circle track: Standard OAC Sprint Mag I,II,III
(up to 2.5 amps)
 
Street/Hot Rod: Standard OAC  Sprintmag  

--------------- not for continuous use ---------

Blown gas: 2-3 amp Super-Mag II  
Mild Blown alcohol (up to 10 PSI of boost): 3 amp Super-Mag III  
Moderate Blown Alcohol (up to 20 PSI boost): 4 amp Super-Mag IV Pro Mag 12
Hard core Blown alcohol (~30 PSI boost) 6 amp OXC 6 amp Super-Mag V Pro Mag 44
Injected Nitro (50%): 4 amp Super-Mag IV  
Injected nitro 50-100%: 6 amp OXC 6 amp Super-Mag V  
Blown nitro:   7-8 amp Super Mag V Pro Mag 20
Top Fuel     Pro Mag 44
       
Super Mag 2  - 3.3 amps and has a small .36uF capacitor on the inside.
Super Mag  3 - 3.8 amps  and has a long, metal .56uF capacitor on the outside
Super Mag 4 contains the same windings internally as the 2 and 3 but has a more powerful "rare earth" or neodymium magnet that makes approximately 4.2 amps and never needs recharging. It has the same long metal cased .56uF capacitor as the Super Mag 3.
Super Mag 5 has a different winding on the inside that changes the output drastically. They usually contain a rare earth magnet, but some have undergone a winding upgrade but kept the existing Super Mag 2 or 3 magnet. The output of the Super Mag 5 varies with magnet strength and can be setup to output anywhere from 5 to 8.3 amps primary and utilize a variety of capacitors on the outside. The Super Mag 5 should be fitted with a 3-wire harness. The extra ground provided in the 3-wire harness should be run to the engine block or cylinder heads.
1.0uF (medium sized yellow unit for mags from 4.5-5.5 amps)
1.6uF (big yella fella for 5.5-6 amps)
Combinations of the 1.0 and 1.6 capacitors can be used up to 7.5-8.3 amps
 

Electronic Super-Mags V (Elect-not points) VI VII X XI
were discontinued by Mallory years ago and parts for them are no longer available. Back when they were new (in the 80's), the power transistors used in them were not very robust compared to today's standards. The high output of these units meant that they continuously ate themselves alive and needed constant maintenance.

Coils  (Mallory)

 
Coils (MSD)
  (1994) -> 50,000 - 60,000 volts (not needed)
   (xxxx)  newer style 45,000 volts (last longer)
Note:
That there are several numbers inscribed on the back of all coils.
One set is the date code (which had been changed to an easier method to read) and the second and third sets are the inductance values of the coils. In this case the numerical value does not represent any form of performance like 709 vs. 899 these numbers are simply inductance values of the windings