best sparks plugs for hotairs?

[fireberd350]

i did a search and no luck so you cant say i didnt try...im sure this ? has been asked b4 but i figured that since every other part on this car has to be exaclty precise that if i bought the "wrong" plugs it'd run like crap.....any ways i have always had good luck w/autolites.....whats everyones opinons?

 

[WFO]

for moderate boost levels(20# and under)i'd use either ac delco cr43ts or ngk ur45.gap at tight .035".

for alky/race gas and higher boost i'd go with ac delco cr42ts or ngk ur5.start at .035" and tighten up as necessary.

later,sean

 

[turbo6x2]

For race set up and better idle we have found the ngk ur5 gapped at .032 to work the best. I wasn't aware of a ngk ur45? I was under the impression they came single digit numbers only such as 4, 5, 6, 7 and so forth? Our cars seem to like a hotter plug to run better. Just what I have found personally.

 

[fireberd350]

can u get ugk plugs @ local stores or thru mail order/internet only?

 

[WFO]

you can get ngk's locally,just call around.

from what i can tell the ur45 is about the same as a 43ts.i've got them in my car right now with pump gas and alky(18º/24psi)and they're working pretty well gapped at .035"

from what i've gathered:

-ur5=cr42ts
-plug book says stock gn is ur4(44ts).
-ur45 is in between(43ts).

like i said,i gave em a shot and they're working good so far.

btw,i got my spare intake from mike mccoy the other day.let the porting begin .

later,sean

 

[Twins]

I've been using 23's @ 32.

4 yrs.........I tried the AC's once and they seemed to foul faster...as we all know it's such a PITA to change them I went back to the Autolite's.

Yeah I'm lazy.

 

[turbo6x2]

Napa sales the NGK I think on their web site if you don't have any of these around you. News abou the 43. I just know Grand Prix's running juice run the NGK UR7 and they were surprised I run the 5's. I think the autolites worked better then the AC when we ran these as well. Liked them better.... It's been 4 years since you changed your plugs, jez Chris that could be a 12 second pass right there. LOL

 

[6SENSE]

My brothers and I got some NGK UR5s through Advanced Auto Parts last year. They didnt have them in stock but were able to get them within a day, or two. You will need the actual part #. I dont remember it off hand right now, but I got it from a thread over in the Alky/Propane section. Do a search over there.
Oh yeah, the price was cheap too. It was in the $9-$10 range for 6 plugs.