I've read on here that everyone has the MSD plug wires with autolites.
I've been searching the net and cant seem to find them anywhere for my 98 D. Anyone know where i could get them at? Would be a great help!
Not to speak for Kevin, but the NGKs don't seem to foul as quickly as the Autolights. The reason that the Autolights are so popular is the documented claim that real HP increases can be had. I've ran both & couldn't tell the difference...
Experience with both plugs, NGKs last much longer and provided me with a better idle/driveability. Running an MSD ignition, I need them to last a lot longer. Plus, quality wise, I think the NGKs are much higher quality than the 3923s.
Got the NGKs with differnet wires. 12k miles so far and no issues .
I seem to remember somewhere reading that the Autolites may effect fuel consumption adversely. No idea if there is any truth to this, but if it does, you will more likely feel this before you feel the performance improvement (if any).