Well, since I already had the Autolite 3923's I decided to throw them in today. I'm not doing my full tune for about another 2 weeks, so I figured that would be a decent trial period for the plugs. As of initial start up and about a 10 mile test drive, I have to say I like the results of the 3923's so far. I could tell when I fired her up thatshe was a little smoother, and it showed during acceleration, too. Now I know it is waay too early to be 100% pro-Autolite, but as of now, I like them...especially for about $11.

The ones that were in my truck were Champion 436's. The norm... They looked alright, but all their gaps ranged from about .051 to .055...so now I know that the dealer probablyDID NOT change/regap the plugs before I bought the truck 6 months ago. Seems like I read an article that said on average, you lose about .01 every 10K miles...not sure. But I have only put about 3500 miles on the truck in 6 months...so I know they didn't change the plugs...b*stards.

Anyway, in conclusion, it's too early to decide which plugsI think arebetter, especially after seeing the gaps on the ones that were in there, and the fact that I have never experienced the Champions as a brand new plug. The smoothness could easily be attributed to the fact that I just put brand new plugs in, gapped at .040...regardless of the brand. But, if the Autolites continue to perform as they are now, I will more than likely stick with them, since they are only about $11 for 8, and are available 24/7 at Wally World. I know some of you said the 3923's didn't give you any problems until a couple of months down the road, so we will see what happens...so far so good.

Also, I found it much easier to use a 3" extension and just leave those plug wire shields in place when changing the plugs...I pulled the first two but then decided it wasn't worth the hassle. I found that the sleeve sort of acts like a guide if you insert the new plug while in the socket, and it helps to get it straight and avoid cross threading.

 

Anyone know anything about the Champion 3436's? Advance told me they couldn't get the truck plugs but recommended these. Napa had to order the truck plugs but I would have had them here in time for when I wanted to put them in anyway. I bought the 3436's but should I take them back and go order the truck plugs or are they better? Thanks.

 

According to Summit the differences I see are that the one I got doesn't have a resistor where as the 4436 does and the electrode tip material is platinum instead of copper. Does this make a difference? Thanks.