E3 spark plug
Senior User
Joined: Aug 2007
Posts: 346
Likes: 0
From: Bristol/Hartford CT
Got em on my 5.0. No probs so far after almost 18k miles on em. Noticed a slight gain in MPG, VERY minimal... Running 14/24 now. (Gotta get sold #'s to post for the EFan conversion, if anyone is wondering... I'll post up in a couple weeks.)
Not sure if they're worth it compared to Autolite stockers, though.
Not sure if they're worth it compared to Autolite stockers, though.
Laughing Gas
Joined: Jan 2008
Posts: 751
Likes: 0
From: NC
^ I don't know for sure, but be sure to check and make sure the Lightning plugs are the same as the regualr 351 plugs, as the heads are different.
In my limited experience, I have found that SBF's don't like "fancy" plugs.
In my limited experience, I have found that SBF's don't like "fancy" plugs.
Lead Driver
Joined: Feb 2000
Posts: 5,374
Likes: 46
From: Palm Bay, Florida
Plus 2 on the fact SBFs don't like "fancy" plugs-I put a set of split-fires in my 302 in my '78 when I rebuilt the engine-they were crap right from the start-I actually thought something was wrong with the engine until I swapped them out for Autolites!
Senior User
Joined: Aug 2007
Posts: 346
Likes: 0
From: Bristol/Hartford CT
^ I've NEVER liked platinum plugs. I used some in my Cavalier back in the day and that thing ran like s**t after 1000 miles!
There was actually some dyno testing done on them (against the Bosch plugs) that showed they reduced emissions and helped the engine make a hair more power.
I know e3 is a sponsor of HPTV, and the Tech on that show is archaic at best, but still.
E3 Spark Plugs Video Center | Spark Plugs Videos | Spark Plugs News
I've heard of more people disliking these plugs than having good results with them. I, personally, haven't had a problem with them. The emissions results on my truck were amazing, though! Not sure if it's from the plugs or all of the TLC this F150 has seen. The limits were in the thousands, and my truck passed with 200's and 300's. I'll have to dig up the print out.
I know e3 is a sponsor of HPTV, and the Tech on that show is archaic at best, but still.
E3 Spark Plugs Video Center | Spark Plugs Videos | Spark Plugs News
I've heard of more people disliking these plugs than having good results with them. I, personally, haven't had a problem with them. The emissions results on my truck were amazing, though! Not sure if it's from the plugs or all of the TLC this F150 has seen. The limits were in the thousands, and my truck passed with 200's and 300's. I'll have to dig up the print out.
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Posting Guru
Joined: Nov 2008
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From: Pennsylvania Wilds
Are you sure it isn't 951.8x better? I can't stand when people exaggerate, even if it's only two tenths....
Postmaster
Joined: May 2008
Posts: 2,703
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From: La Vergne, TN
haha i know. im kidding. but it is noticably smoother. well as smooth as it can be with the cam hittin.
Senior User
Joined: Aug 2007
Posts: 346
Likes: 0
From: Bristol/Hartford CT
I've never seen a higher mileage 5.0 with OUT the slight miss, FWIW.. Saw three of em just this weekend. Mine had a slight miss with the Autolites and still does with the diamond fires. Hot PIP I think.