I've used MSD wires in the past but prefer Moroso Ultra 40 unsleeved 8.65mm wires, 40 ohms/ft. , part # 73712 for a BBC run under the headers/dragster and # 73728 run over the valve covers/firebird.

I still say most likely problem is bad 7AL-2 box.

I bought MSD this last time and that is what is on my car now and haven't had an issue, however I think I will be going to Magnecore wires the next time I need them. They have a tremendous amount of FACTUAL technical information on their website and they were very helpful on the phone. They break down the facts from the marketing hype which is rampant in the ignition wire industry.

https://www.magnecor.com/magnecor1/main.htm

quote:

Originally posted by BG7X77:
I bought MSD this last time and that is what is on my car now and haven't had an issue, however I think I will be going to Magnecore wires the next time I need them. They have a tremendous amount of FACTUAL technical information on their website and they were very helpful on the phone. They break down the facts from the marketing hype which is rampant in the ignition wire industry.

https://www.magnecor.com/magnecor1/main.htm

damn and I just bought new ones... those look good. do they come in black?

quote:

I think I will be going to Magnecore wires the next time I need them. They have a tremendous amount of FACTUAL technical information on their website and they were very helpful on the phone. They break down the facts from the marketing hype which is rampant in the ignition wire industry.

If the ignition control systems on my race car ( MSD Grid and Holley HP ) “required” the use of a RFI or EMI spark plug wire with 2.2k ohms resistance /ft, then Magnecor might be what I’m looking for. The fact is, they don’t.

The MSD Grid 7720 amplifier, MSD 8261 HVC-2 coil and MSD Super Conductor wires on my ignition will open the gap on a NGK-9 plug from 30 thou to 42 thousands in 500 runs. The engine will perform the same as if the spark plugs were new or at 500 runs. I do not index my spark plugs.

If someone using Magnecor or any other higher resistance wires on a high compression race engine could report their experience with these I’d be interested in reading it.