best spark plug for my 440

[markyb812]

hello from England ..I'm new to the dodge charger and thought I'd change the plugs lol ..pulled a plug and found the small type denso t20pr-u does this mean I have the 452 heads?
looked up that denso plug and found some equivalents like champion rv9yc and ngk bpr6fs autolite 24
what should I buy?
here the spec from the ad when I bought it..  a 440 big block (matching numbers) is twinned with a 3 speed 727 transmission, both were completely rebuilt. The engine has new bearings, rings, Mopar Performance street hemi cam and lifters. Additionally, the heads were redone with a 3 angle valve job, new valve springs and seals, plus this Charger has new a mopar performance dual plane intake and finally both a Carter 600 cfm-carb and fuel pump. ...
cheers for you help guys

[Ghoste]

I liked the Champion plugs for years but have become an NGK user more recently.

[Nacho-RT74]

has being told XR5 from NGK

[Nacho-RT74]

originally they were Champion RJ11JY... not anymore available and replaced by RJ12YC

[alfaitalia]

Hi from a fellow Brit ....where abouts in Gods own country are you from. I'm on the South coast near Bognor. Tell us a bit more about you car and post a few pics!....oh....and welcome!

Oh and cant help you with the info (I'm so far from stock that most info on stock Chargers doesn't apply....not long til the "Big Reveal" of project Blue Book....so I have not posted a single photo yet...so that puts you one step ahead of me right away!!)....but there will be plenty of folks along with the answer any time now!

[markyb812]

https://youtu.be/rKpc0dIpaaA check out my charger
heres some picks of me and my mate out and about in southend on sea Essex

[alfaitalia]

Very nice...thanks for sharing. Never seen a 'bird in the UK.

[markyb812]

this one lives in rayleigh and he also has a two cuda's and the challenger and has a 70 charger ...
I own the laguna  and the other 73 charger lives in southend...
talking about birds if you do American car fest at brands hatch a sox and martin turns up there.

[Nacho-RT74]

Nice I could travel through Europe some day with another 3rd members fellows... of course will need to pass the Pririneos and Eurotunnel

Or get a Ferry from Santander up to Liverpool

THAT IS OF COURSE IF MY CAR GETS FINISHED TO GET IT UP TO SPAIN WITH ME, DAMN!!!

[markyb812]

cheers for your replies guys ..I found a box of 20 RV9YC Champion plugs for £20 on ebay so I'm going to try them lol I hope they fit... would of tried E3.40 plugs but cant find em here in England

[markyb812]

how the hell do you get the rear plugs out? 

[Nacho-RT74]

right side is posible from top of engine bay, but left side is WAY EASIER from underneath the car

[markyb812]

cheers for that I haven't managed the drivers side from the top, and not tried the passenger side yet... can the heat shield be removed?

[Nacho-RT74]

No need to remove heat shields really... anyway, they are attached to the head bolts, not the manifold studs and these would need to be removed to reach the head bolts, so you won't be able to do it.

I have been able to remove drive side plugs from top but DAMN!!! is really HARD to do it. Number one is easy, but number 3 is the bigger headache

[gtx6970]

I do them all from underneath .

[markyb812]

got em done! did 7 from the top and one from underneath.... lol pulled out six denso and 2 autolite...they look like they have been in there years and they weren't even changed last time it had new plugs..

[Simonic]

I've always used either Champion or NGK.
Interestingly. I had a look at the car you bought. Numbers matching top banana car ?
Did you get the air con sorted ?