Originally Posted by sonoronos
The electrical engineer inside of me is cringing and dying a little bit each time a new post is made on this subject.
1. Spark plug wires carry high voltage, low current, meaning that the total transmission loss is very low.
2. Some of the physics stated about lower wire resistance is true, but only if you are trying to transport 300KW of electricity from Riviera Beach Florida to Amherst Massachusetts. Between a coil pack and a plug, to fire a spark plug, the total wire loss is probably on the order of nanoamperes.
I agree. Where it did make a slight difference for me was in a 1991 GMC truck with a slightly modified 350. I changed out the coil for a Jacobs Electronics Ultra coil along with their zero resistance wires. I gained a whole wopping 3 HP for about $250 so it was not worth the money. The original coil and wires were fine so it was a good comparison.
Steve