Ballast, Blaster II, ohms, current, friggin volts!
I copied this from GMC BUBBA's post on jalpopyjournal. It appears someone took the time to monitor the hei ignitions behavior with different resistance coils and it very well may blow the whole "run a blaster II" out of water.
Based on this, I dont think it is a good idea to run a blaster II with or without a resistor on an HEI if a person wants optimum performance. It appears that .5 or slightly lower is the sweet spot based on some other info I got off the same site. It appears that GM Hei remote coil is .45 ohms.
The pictures are links to better pics on jalopyjournal
I reckon that is why most folks run the ford E core.
Here is BUBBA's into:
"The HEI came as a federal mandate to increase tune up mileage ( for clean emissions) and was a first from the Delco guys in regards to high energy ignition systems and was a home run from the first day forward.
The ignition offered high energy at 5.5 to 6.0 amps of primary current controlled by the module. Module also offered a varying dwell to prevent the igntion coil from overheating using low dwell at idle ( 15 degrees) and increasing with rpm to 30 up the rpm scale.
The orginal design was to use a .5 ohm untapped coil and isolated the primary and secondary windings ( caused some problems when left at high demand).
This discussion concerns the ignition coils used with the HEI.
I tested three coils this morning with the waveforms shown .
1- .5 ohm (oil filled) ignition coil. Unit ws single firing a 25,000 test plug and used as waveform shows 5.8 amps clipped with current limiting ( hence the flat spot at shut of of control) and used a preset time of 3.6 mili sec to get er done. This is a normal function of a properly working high energy ignition system. You can hear see and smell the energy ( and feel if your not careful)
2-1.5 ohm coil...... Unit still fires a 25 kv test plug but you can hear the difference in enegy, waveform shows a decrease in current to 3.0 amps . ( A new point ignition runs at this decreased level )
3-4.0 ohm coil, would no longer fire the test plug and using a standard plug spark was at 2,000 volts and 1.5 amps .....this one wouldnt owrk very well if at all!
Hope this clears up some mis conceptions in regards to HEI module control
The hamb is a great place for sure.........
Attached Thumbnails 
"
I copied this from GMC BUBBA's post on jalpopyjournal. It appears someone took the time to monitor the hei ignitions behavior with different resistance coils and it very well may blow the whole "run a blaster II" out of water.
Based on this, I dont think it is a good idea to run a blaster II with or without a resistor on an HEI if a person wants optimum performance. It appears that .5 or slightly lower is the sweet spot based on some other info I got off the same site. It appears that GM Hei remote coil is .45 ohms.
The pictures are links to better pics on jalopyjournal
I reckon that is why most folks run the ford E core.
Here is BUBBA's into:
"The HEI came as a federal mandate to increase tune up mileage ( for clean emissions) and was a first from the Delco guys in regards to high energy ignition systems and was a home run from the first day forward.
The ignition offered high energy at 5.5 to 6.0 amps of primary current controlled by the module. Module also offered a varying dwell to prevent the igntion coil from overheating using low dwell at idle ( 15 degrees) and increasing with rpm to 30 up the rpm scale.
The orginal design was to use a .5 ohm untapped coil and isolated the primary and secondary windings ( caused some problems when left at high demand).
This discussion concerns the ignition coils used with the HEI.
I tested three coils this morning with the waveforms shown .
1- .5 ohm (oil filled) ignition coil. Unit ws single firing a 25,000 test plug and used as waveform shows 5.8 amps clipped with current limiting ( hence the flat spot at shut of of control) and used a preset time of 3.6 mili sec to get er done. This is a normal function of a properly working high energy ignition system. You can hear see and smell the energy ( and feel if your not careful)
2-1.5 ohm coil...... Unit still fires a 25 kv test plug but you can hear the difference in enegy, waveform shows a decrease in current to 3.0 amps . ( A new point ignition runs at this decreased level )
3-4.0 ohm coil, would no longer fire the test plug and using a standard plug spark was at 2,000 volts and 1.5 amps .....this one wouldnt owrk very well if at all!
Hope this clears up some mis conceptions in regards to HEI module control
The hamb is a great place for sure.........
Attached Thumbnails 