Doc here,

imp:
It all depends on the TYPE of plug wires you are running..(and maker)..
Look on the box they came in, usually on aftermarket wires, they give a rating of ohms per inch, some can be as low as a few ohms, and some as high as 3-4000 ohms per inch..
DO NOT run low ohm wires on an HEI, or you will be replacing modules about once a week..residual feedback will wipe them out..AND you won't be listing to your radio or CD either!
The more resistance you have the more delay in impulse deliverly..(which is what you want to fire a plug properly, rise/Fall time)
If you want a good set of wires, go with a performance 8.5 mm spiral core wire, and you should be fine.
Doc

imp: