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  1. mattressking

    hei igntionand clutch fan.. worth it on a 78???

    You might not have a thermostat in the housing or the seal above tstat is missing.
  2. mattressking

    hei igntionand clutch fan.. worth it on a 78???

    Leave the ignition alone, make sure it works and out in oem plug wires and fresh plugs - leave it be then make sure timing is set correctly. I thought all US ‘78s had clutch fans but I could be wrong? If not, clutch fan is a good upgrade, but again, not necessary.
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