I'm the original owner of a 97 1500 with a 360 and the truck has 155,000 miles. All regular maintenance has been done as scheduled except for ignition components (plug wires/caps, distributor cap and rotor).Would you guys change these outeven though thetruck seems to run fine?

 

I would change them all. Get some good copper plugs, OE champions are good, and cap with brass terminals. I had to change mine at 80k. It started misfiring to the point of dropping a cyl when it rained out.

 

I've got 77K on my '01 and am going to do mine this weekend. It runs fine now but maint. sched. says 60K.

 

Spark plugs I've actually changed twice but I was referrring to the wires and distributor cap and rotor. They're all original.

 

i did a full tune up not to long ago and i reccomend doing it because even if you dont notice it running a little slugish doesnt mean its not... i went with champion copper plugs not even 2 bucks a piece NAPA cap and rotor about 15 bucks and then with wires just get a good quality wire around 8mm...