Best plugs for a 4.8
#1
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Best plugs for a 4.8
In your opinion what are the best spark plugs?
And what gap is it for the 4.8?
I've heard a lot of good things from the ngk tr55's
And what gap is it for the 4.8?
I've heard a lot of good things from the ngk tr55's
#3
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Naturally aspirated I like the factory plugs. The fine tip stays cleaner and they last much longer than anything aftermarket. If you are looking to gain power with the swap look elsewhere. All the splitfire and e3 do is cost you money.
#5
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Lol well right now I'm doing the engine swap so no mods yet but i plan on doing the basics for now, cam, exhaust, tune and that's about it till i save up for T-56. Then ill start doing more.
as for the boost... Idk i might just do a dry 50-75 shot. I might go more once i swap the push rods and lifters but this is in the far future
as for the boost... Idk i might just do a dry 50-75 shot. I might go more once i swap the push rods and lifters but this is in the far future
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#8
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Since the plugs in the truck are easy to get at and change, I have been keeping copper core plugs in it... they're cheap and I believe they offer the best conductivity. I feel they work best. You could spend more but all you will get is longevity, not better performance. Currently I have Autolites in it on a stock set-up.
#9
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Pretty much everybody here loves the NGK TR55's gapped between .050-.060 for NA applications. If you just want to throw a set of plugs in there and not have to worry about them for over 80K, some NGK or ACDelco Iridium plugs are more expensive than the coppers, but will last probably over 100k on a properly tuned engine. You'll want to gap iridium plugs around .040 though which is the factory spec for the trucks equipped with iridium plugs. If you have a lot of dough and spring for Denso iridium plugs, check their website for their recommended gap, as I believe that it is different than GM's spec for the Delco plug. Iridium plugs are usually pre-gapped, but it's always a good idea to check them just in case. If you have to set the gap on an iridium plug, don't pry between the electrode and ground, as this will surely snap the micro-welded iridium tip off of the plug. Use needle nose pliers or something like that to grab and adjust the ground only
#10
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I am due to replace my spark plugs and I heard that there are plugs that can actually save on fuel consumption with an increase in power. Aside from copper, there is this platinum and iridium type of plugs that differs in material and design that contribute to its benefits.
I ran across an article here for 4.8. and I am leaning towards this platinum plug because of improving fuel efficiency and performance. I will install it myself and I have a feeler gauge to make sure the gap is 0.040 inches v8. I’ll update you on how it will go.
I ran across an article here for 4.8. and I am leaning towards this platinum plug because of improving fuel efficiency and performance. I will install it myself and I have a feeler gauge to make sure the gap is 0.040 inches v8. I’ll update you on how it will go.