Click to enlargeMSD : 8981 : Timing Computer

The MSD Programmable Timing Computer has several features in common with the pre-programmed PN 8980 Timing Computer. Both are adjustable for 4, 6 and 8-cylinder operation and both models have a High Speed Retard function. The difference between the two models is that the PN 8981 Programmable Timing Computer has an adjustable timing curve whereas the PN 8980 is fixed. The Programmable Computer allows you to adjust the start point, rate and total amount of the advance curve to fit your application.
  • The PN 8981 must be used with an MSD Ignition Control and is supplied with a 2, 3 and 4 module. Page 105 lists a full selection of retard modules and selectors.



  • 8981$244.99
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