I’m not a big fan of Champion spark plugs (not impressed with their quality).
What is a good alternative for a stock 273 Commando?
What is a good alternative for a stock 273 Commando?
What spark plugs for a ‘66 273 Commando?
- Thread starter SSVDP
- Start date
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Compression? What pistons did you use in your rebuild? I need to screw in a new set but My 10 year old Champions are still working.
The egge with stock compression
The N10Y's that came stock are a bit too cold and the 2 barrel N14Y's are too hot. I ran RN12Y's and they are just right. Your compression is around 9.5/1 which is halfway in the middle of the two.
Or the cross overs to NGK,Autolite,etc.
Champions work well on Mopars.
Just watch the cross overs. I started out with Autolites crossed over from N10Y Champions. The chart I used was too cold and I chased a rough idle for a long time.
Dartsun
Mopar Dude
I run NGK in my 65 Dart hipo engine, I also don’t care for champion.
What number?
Dartsun
Mopar Dude
That scares me. There is no breakdown difference between 2 and 4 barrel applications.
Produktfinder
I use always NGK, motorcycle, 2stroke, classic cars, kart and more.
Sometimes you need a cross reference chart from the intermet.
Never disapointed! If the NGK plug fouls, your engine had a problem. Best thing they are cheap too
!
I use always NGK, motorcycle, 2stroke, classic cars, kart and more.
Sometimes you need a cross reference chart from the intermet.
Never disapointed! If the NGK plug fouls, your engine had a problem. Best thing they are cheap too
!
Dartsun
Mopar Dude
I just looked up spark plug for a 1969 340 on there. It popped up the same NGKs. I’m content been running them a decade on this engine.
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