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jeffs55

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Discussion starter · #1 ·
I've been helping a buddy of mine get his "new" 55 running and I'm not sure which plugs to get.
It's a early 80s 454 out of a Winnebago.
Yeah, well it is what it is
I know the ones in it are 5/8 hex w/tapered seat
They have very little extension on the electrode and it seems to foul out too quickly.
Should I look up for plugs for the Winnie or??
First time I've messed with a BBC.
Thanks.
 
Discussion starter · #2 ·
AC R44T or TS?
Or equivalent?
 
#5 ·
First,
Move on to a different brand plug. Many will argue I'm sure but I've never had any luck with AC's, they foul real bad and real fast in a BBC for me.

Second,
A good affordable plug is Autolite. They're much more resistant to fouling. I've stuck with them for a very long time. You might try something like the Autolite Copper core 26's to start with.

Going on up the ladder (brand name wise) starts getting more and more expensive with each step up. Bosch and NGK work good but they are pricey.

You describe the reach on the AC's as being pretty short. Go a little hotter than that on the next go round.

There's a little bit of info in this link that pertains. http://www.hotrod.com/how-to/engine/116-0703-spark-plug-guide/
 
Discussion starter · #7 ·
I got 44LTS.
It's what they had.
Hope they work
 
#8 ·
NGK's are the only one that I would use in a BBC. I would pick a Autolite over a AC plug. I tried them all.
 
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#9 ·
Autolite & MSD!!!!!!!!!!!!!!!!

:bowtier:Autolite, on the spark plugs, with out a doubt!! Seriously consider a MSD Ignition system!!!---That will keep the plugs a lot cleaner, and the engine will start and run a lot better!!:driver::tu:tu
 
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#11 ·
NGK #8's
 
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Discussion starter · #12 ·
Thanks all.
We'll stick these in and see if it even helps.
Was getting a dead miss and a lot of popping when trying to drive.
Even if these ain't the best plugs, it should tell us if we have to go deeper.
 
Discussion starter · #14 ·
We had a couple that I couldn't get out with the tools I had
I took one of my plug sockets to work and milled a 1/2" slot in the side.
Hopefully that will do it.
I may modify a boxed end as well so I have each.
 
#15 ·
jeffs55 said:
I got 44LTS.
It's what they had.
Hope they work
Click to expand...
I'm running A/C R44T's in old and now in rebuilt. They are a *cold* plug. I've been told to run the coldest plug you can get away with. Mine burn clean. Over the years I've decided plugs are plugs. Never seen any difference between the cheapest and the most expensive. (but I've never been to the track either) Like was said, if they are fouling it's likely the motor burning oil. A picture is worth a thousand words, especially when it comes to spark plugs.
 
Discussion starter · #16 ·
They are not built up with crud.
Just black.
But these plugs I pulled out are really short threaded. Like stock SBC.
The new ones are maybe a half inch longer.
And as I put them in I could feel carbon build up at the bottom of the plug hole.
I don't think they were even reaching into the combustion chamber.
I did a test with the first one.
Installed and turned the engine over without starting.
Pulled it out and it was not damaged.
I was concerned they may be too long, but no.
Old plugs Autolite 145.
 
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jeffs55
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