NGK spark plug question

289 · 12-26-2008, 07:22 PM

I see the UR45 is the stock replacement spark plug for the 87-93 5.0 with stock heads but can I use a UR5, a cooler plug since I'm running a wet NOS system?

USMC302 · 01-20-2009, 09:27 PM

Yes, but remember that running a cooler plug for the nitrous is beneficial when on the spray, so if you are a daily driver that sees only an occasional WOT punch with the juice, I would recommend staying in the stock temp range, but if you are a braket racer or it's a race car only, run the cooler plugs. Eitherway, it's a "safe" plug to run.

12-26-2008, 07:22 PM	#1
289 Registered Member Join Date: Jan 2000 Location: Mount Joy, PA , U.S. Posts: 198	NGK spark plug question I see the UR45 is the stock replacement spark plug for the 87-93 5.0 with stock heads but can I use a UR5, a cooler plug since I'm running a wet NOS system?

01-20-2009, 09:27 PM	#2
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Re: NGK spark plug question Yes, but remember that running a cooler plug for the nitrous is beneficial when on the spray, so if you are a daily driver that sees only an occasional WOT punch with the juice, I would recommend staying in the stock temp range, but if you are a braket racer or it's a race car only, run the cooler plugs. Eitherway, it's a "safe" plug to run. __________________

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