tune up

[black95]

did a tune up last spring. time for one again as winter is slowly ending. i used acdelco plugs. is there any better? i used wires made by EXACT didn't hold up well , major performance loss over time. what are some good wires? any suggestions on a cap and rotor?

---------- Post added at 08:12 PM ---------- Previous post was at 08:09 PM ----------

sorry just realized i did this in GD. don't know how to or if it possible to move it to performance.

 

[Brandon X]

Yeah im interested in this aswell as im getting a tune up in a week. I'm thinking about going with E3 plugs but ive read mixed reviews about them.

 

[black95]

i have heard people say they are great and others say don't waste ur money stickk with $1.99 delcos

 

[ChrisInWI]

me too??? x3.... I bought the delcos because alot of people seemed to insist that the 350 vortecs liked them the best by far. word of caution, don't trust the gap out of the box - I checked mine w/ 3 different gap tools and they were WAY undergapped from specs. the boxes weren't smashed or anything so who knows why!?

I believe many people recommend MSD stuff too, but I don't wanna pay $100 for a set of wires. Has anyone used the less expensive MSD set of wires and what's been your success???

 

[black95]

come on guys , some one has an answer ,there are 3 people asking here!!

 

[rich5368]

I don't know about the other brands. I don't use them. I've had my truck for 150k miles and Delco plugs and wires are all I use. You can't go wrong with stock replacements.

 

[destroyer1362]

+1 on the delco's. I've heard they work best on our trucks, and so far I have to agree..

 

[95TwinTT]

OK, here it is, a dyno test of 12 different sets of spark plugs. The results of the testing is in the latest issue of Street Thunder. They pretty much covered them all from AC to Bosch and several grades of each.

Bottom line was,
the Autolite double platinum, came in the lowest, with 405.4 HP.

The winner was the NGK G-Power @ 416.7 HP

This was a very serious test on an engine dyno with the only difference being the plugs. They even rotated and went back to a set of plugs to verify the results of earlier tests.

The test is in the March/April issue. The NGK G-Power was also the cheapest plug of all they tested. Just goes to show, the price does not guarantee results.

 

[black95]

interesting, thanks

 

[1999hoe]

problem is how long do they last...

 

[cam3439]

Well I installed some Bosch Platinum/Iridium Fusion spark plugs like 2.5 years/40k miles ago and they have held up pretty good. They made the truck run smoother, and it still runs smooth. They are installed on my '02 Z71 Tahoe 5.3L. I don't know how they'll behave in the 5.7L, but they are doing good in the 5.3L. And you don't have to be worrying about gapping as they come pre-gapped (you cannot change the gap on these). If you notice the gapping is messed up or incorrect then you're going to have go back to the store to get another set. They were 4 pronged, so I would suggest getting a similar set if they don't have the platinum/iridium fusion for your engine. Get something that are OEM or better. And you should also get some better wires. I got some 8-8.8mm wires to go with the spark plugs. Stock wires I think are like 7mm.

 

[IRQVET]

I can't stress this anymore than I already have, BUY BOSCH PRODUCTS!! I will put anything they make into my Tahoe. Currently I'm running a Bosch Platinum Plugs, Bosch Wires, Bosch fuel filter, Bosch cap and AC Delco rotor.

AC Delco parts are not horrible, but their not stellar either. I began buying Bosch parts a long time ago, and they hold up very well. I've never been let down. (Except the Alternator I just purchased and had to return because it didn't fit my Tahoe) That was my only incident where Bosch didn't come through as advertised. And even after that, I'm still a huge fan of their products.

 

[Biggwaukegan]

Listen up. If you wanna run like the big boys run MSD or ACCEL. I run MSD with the msd coil and bosch plugs. think i got the double bosch platinums. Anyways Im running a msd distrubtor too. Shit makes a world of diffference. Replace that crappy oil with Royal Purple too. Any extra hp or gas mileage gain we can get is great. Do these things and you will thank me later

 

[99Yukon_Z71]

I am using the E3 plugs in both my burban and Yukon, and so far, the Yukon which is what I drive everyday, is running like a champ. Even Justin of Blackbear was impressed at the power I was making. I run a Accel Coil, wires and E3 plugs. I am still running the stock cap and rotor, so imagine when I change those out too. Just my .02