LT1 guys with AFR heads. What plugs for nitrous?
12-21-2005, 05:15 PM
#3
Originally Posted by Sgt. Spuds
How many of these threads tonight... Theres a few posts just like this above or below, check em.
12-21-2005, 06:52 PM
#7
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http://www.autolite.com/pdf/RacingCrossRef.pdf
The AR51 is a gasket type plug. Check it out.
Just make sure the reach is correct in your heads.
The AR51 isn't a step or two colder, it's pretty much the bottom of the barrel. I can tell you that they will take a hard beating.
The only downside is that they foul quickly under street driving conditions, so you have to pull them and clean them fairly often.
The AR51 is a gasket type plug. Check it out.
Just make sure the reach is correct in your heads.
The AR51 isn't a step or two colder, it's pretty much the bottom of the barrel. I can tell you that they will take a hard beating.
The only downside is that they foul quickly under street driving conditions, so you have to pull them and clean them fairly often.
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12-21-2005, 11:30 PM
#9
NGK Plug Reference
14mm, 3/4" Reach, 5/8" Hex Head
From Hottest to Coldest:
R5671A-7 - Stock Number 4091
R5671A-8 - Stock Number 4554
R5671A-9 - Stock Number 5238
R5671A-10 - Stock Number 5820
R5671A-11 - Stock Number 6596
I am running the -8s myself. I want to say I was told the -9 should be cold enough for a 300 shot, but I may be thinking of a -10.
Dave
14mm, 3/4" Reach, 5/8" Hex Head
From Hottest to Coldest:
R5671A-7 - Stock Number 4091
R5671A-8 - Stock Number 4554
R5671A-9 - Stock Number 5238
R5671A-10 - Stock Number 5820
R5671A-11 - Stock Number 6596
I am running the -8s myself. I want to say I was told the -9 should be cold enough for a 300 shot, but I may be thinking of a -10.
Dave
