LT1 spark plugs
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Joined: Jan 2008
Posts: 79
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LT1 spark plugs
I have a 72 LT1 and some years ago at Carlisle I purchased a set of AC plugs 44TS.
Now looking it up in the service manual the plugs listed are AC R44T for a 72 LT1.
The ones I have AC R44TS are for a 71 LT1.
Would there be any issues in using the R44TS instead of R44T in my car?
Now looking it up in the service manual the plugs listed are AC R44T for a 72 LT1.
The ones I have AC R44TS are for a 71 LT1.
Would there be any issues in using the R44TS instead of R44T in my car?
Burning Brakes
Joined: Apr 2008
Posts: 1,222
Likes: 93
From: shelbyville West Michigan
they are the same plug except the R44TS is extended tip (the 'S').
I would run the R44T if it were me and return the R44TS...but I don't own an LT1 so can't say for sure if it would be a problem...but would hate to hit a piston with too long a tip!
I would run the R44T if it were me and return the R44TS...but I don't own an LT1 so can't say for sure if it would be a problem...but would hate to hit a piston with too long a tip!
Race Director
Joined: May 2006
Posts: 18,756
Likes: 2,589
Visually compare the two plugs, the overall length maybe the same, the R44TS may have less of the metal casing surrounding the ceramic exposing more of the ceramic tip. I have a 70 Lt-1 short block running an early version of Chevrolet angle plugs heads and have always used the TS series of plugs.
