GM Dual Connector Coil
Coil Specs:
Turns ratio: 100:1
Primary resistance: .68 OHMs
Secondary resistance: 4.8K OHMs
Inductance: 5.6 mH
Maximum voltage: 44,000 Volts (Tested with 6AL Ignition)
Peak current: 220 mA
Spark duration: 300 uS
MSD Blaster Coil is designed to produce increased voltage and energy ober the stock GM Coil. MSD Blaster and Replacement Coils work with stock ignition and MSD-equipped vehicles and all have direct, bolt-on connection with improved materials and windings for increased output voltage performance.
Direct performance replacement for GM dual connector coil 
100:1 turns ratio and lower primary resistance produce high voltage output
Works with stock ignition as well as MSD Ignitions
CARB E.O. Approved