Voltage Drop Help

[nokones]

I have the same problem with the split second voltage drops. My Holley HP EFI ECM data logger also caught the voltage drops and I can see it in my voltage gauge on the dash. I have two grounds directly from the battery, one to the chassis and one to the engine block and my battery is located behind the passenger seat down in the radio module compartment. I'm using an optima red top battery and it is almost 3 years old. I have checked and checked the grounds. I have even wire brushed the surfaces at contact points and made sure that the battery clamp is tight.



I probably going to have JCG Restoration and Customs rewire the car. Over the years there been many bandaids affixed to the electrical system and various things have been popping up that have been electrical related. Just this past September, JCG had to rewire the two fuel pump relays because the 30 amp fuse for the relays kept popping. I think it is time to just doing everything at once. The car is almost 30 years old.

At first I thought it was a compression issue and was getting kick back because of the timing. This problem has been present with two different type of starters, one with a Tilton reverse mount starter and now with a Powermaster Gear Reduction Starter. So, it can't be the starter. One thought is it might be the circuit/wire from the ignition switch to the starter solenoid.