Which sparkplugs for 340

[Originalowner73 340duster]

Looking to get plugs but not sure if the E3 plugs are good for the older motors..or should I just stick with a ngk or champion??.. it's a 72 340..not sure what was done internally..seems like at least a cam was done and has headers .. thanks

 

[72Dart6pack]

Stay away from E3. Or God will strike you Dead! Lol

 

[Originalowner73 340duster]

Stay away from E3. Or God will strike you Dead! Lol

Lol..and why is that

 

[rumblefish360]

You can always text me Paul
That’s the OE part. There is a Superseded part that they will have.

 

[72Dart6pack]

This post is going to ramble on for days. Let other members chime in and you can make a informed decision. Good luck!

 

[rumblefish360]

This post is going to ramble on for days. Let other members chime in and you can make a informed decision. Good luck!

Drinking and posting are not a great mix......

 

[72Dart6pack]

Im at work. So no drinking. Sorry to burst your theory.

 

[Originalowner73 340duster]

Ok so oem is way to go I guess..not sure why not the E3 tho they are supposed to be a good plug??

 

[rumblefish360]

Try them. What’s the worst thing that happens? You spent *** on them and don’t like them?

I run the champs myself. A bad air and fuel mixture is what will kill the plugs first, if it’s off. Which means it is more so important on the old rides. I just changed the Champs in my Dakota. 1 set in 6 years. However! That’s also a fuel injected engine with very good computer controls.

Plugs are cheap. Spend as you wish.

 

[Originalowner73 340duster]

Try them. What’s the worst thing that happens? You spent *** on them and don’t like them?

I run the champs myself. A bad air and fuel mixture is what will kill the plugs first, if it’s off. Which means it is more so important on the old rides. I just changed the Champs in my Dakota. 1 set in 6 years. However! That’s also a fuel injected engine with very good computer controls.

Plugs are cheap. Spend as you wish.

 

[Originalowner73 340duster]

Remember what I said ..my friend gets me the parts...but don't wanna put something in that would hurt the motor. Wasn't sure if old motor old ( basic) plugs..or new style plugs just for new style motor and not so good for old motors..wanted to know people's thoughts and opinions or known working best combos..

 

[RustyRatRod]

Run whatever Champion number it calls for, or if you prefer another brand, cross the Champion number to something else.

 

[rumblefish360]

The new fangled part won’t hurt it.

 

[krazykuda]

This post is going to ramble on for days. Let other members chime in and you can make a informed decision. Good luck!

Did you say Ramble On????

 

[stroked340]

Been using nothing but Autolites for years in all my vehicles always performed with no issues..Champions suck!!!

 

[Dana]

You can always text me Paul
That’s the OE part. There is a Superseded part that they will have.
View attachment 1715159240 View attachment 1715159241

Very cool chart rumble.

 

[Marcohotrod]

Chart is wrong on 1972. 1972 and 1973 340 is 8:1 compression = n12y. I like autolite and champion, have used both, even at the same time. Why pay extra for nothing

 

[rumblefish360]

Fixed!

Been using nothing but Champions for years in all my vehicles always performed with no issues..Autolites suck!!!

 

[rumblefish360]

Very cool chart rumble.

Thanks, parts store counter mat that has seen better days before I got it.

 

[leblanc]

GO to the NGK or Champion site or even better, send them an email with all the engine info and your phone number, so that when they call they will know the specifics of the engine and know in which direction to steer you.