Best spark plugs for stock engine

[1984 t-type]

Looking to do a spring cleaning and was wondering what's the best plug for a stock setup ?

 

[williamsGN]

CR43TS AC Delco plug - the C designation stands for commercial, as it has a heavy duty electrode.

 

[earlbrown]

I'd probable switch over to NGK's. The Delcos seem to be having issues the last couple years. I'm guessing they're imports now and the QC went down as I don't think any new cars come with those plugs anymore.

 

[TTA976]

NGK UR5 would work well.

Joe

 

[1984 t-type]

Cool I'll try the NGK'S

 

[turbo nasty]

NGK!!!

 

[we4Mateo]

Ngk ur5. Good from stock to 11's. The super charged 3800s came with ngk's from gm. They work.

 

[sparky0798]

What are you guys gapping the ngk' to? Thanks

 

[626gn]

0.035

 

[TurboSmart]

is that a specific ngk number for our plugs?
those plugs are quite scarce in my area so ebay is my only option.

 

[GNRick]

2 bux at Oreilly's http://www.oreillyauto.com/site/c/s...5&year=1987&make=Buick&model=Regal&vi=1020957
2 bux at Advance http://shop.advanceautoparts.com/we...k+2771&vehicleIdSearch=-1&searchedFrom=header
I also checked Rock Auto and they have them too. They show another number is 2771. Or do you live in Siberia with no parts stores around?

 

[TurboSmart]

Puerto Rico... plenty of parts stores, no NGK plugs and no winter...

 

[GNRick]

Puerto Rico... plenty of parts stores, no NGK plugs and no winter...

Winter? What is winter? Oh yeah, its 28 degrees here and my furnace broke 3 days ago. I bought the part off Amazon and it will be here tomorrow. I was in Puerto Rico once. Stayed at a chalet up in the rain forrest. Humid as hell but very pretty. Didn't see any of those rare parrots that are supposed to be there. Went to a casino and an old military fort on the coast line. What do you do there? Work? School? Just hang out?

 

[626gn]

http://www.ebay.com/itm/SET-OF-6-NG...Parts_Accessories&hash=item4ad3b82d44&vxp=mtr

 

[Mike Licht]

autolite 24

 

[626gn]

Like many others I've tried NGK, Autolite, AC Delco. There was no noticeable difference with how my car ran with any of these plugs, all ran great on my setup. However, if you look at the construction quality of those plugs most would agree the NGK appears to be better made than the rest.

 

[getdowngranny]

NGK YR5. Just like the UR5 but with a recessed tip.

 

[TurboSmart]

those are marine plugs... right?

any benefit from the recessed tip.

 

[Steve V]

those are marine plugs... right?

any benefit from the recessed tip.

Yes it won't start glowing red and causing a big issue in the cylinder.....on hard run of course.

 

[Eticket]

autolite 24

not sure what the difference is (hotter or colder) but I've always used autolite 23 on 8445 heads.