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Username Post: Spark Plug Information Please        (Topic#360165)
pauldian 
Contributor
Posts: 319
pauldian
Loc: seligman,arizona
Reg: 05-14-09
03-15-20 07:05 AM - Post#2788676    

1.This is for people with better memories than mine. Can anyone on here tell me what year they stopped supplying the a/c-44 spark plug ?
2. What year did they start making the extended tip plugs ?
3. Now they make a TS-plug and so on.

I'm just trying to increase my knowledge , nothing more,nothing less.

Much & many thanks for any light on this subject.

P.K.



 


TAT_2 
Member #26 "19th Year" Silver Supporting Member, and Official CT Grim Reaper
Posts: 36542
TAT_2
Age: 66
Loc: "UNDER THE BOARDWALK"
Reg: 10-29-00
03-20-20 12:40 PM - Post#2789055    
    In response to pauldian

THE >>> TS <<< STANDS FOR "TAPERED SEAT" PLUGS.
NO STEEL GASKET





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paulo57509 
Senior Member
Posts: 449

Loc: Tracy, CA
Reg: 07-18-00
05-03-20 03:08 AM - Post#2792670    
    In response to pauldian

  • pauldian Said:
1.This is for people with better memories than mine. Can anyone on here tell me what year they stopped supplying the a/c-44 spark plug ?
2. What year did they start making the extended tip plugs ?
3. Now they make a TS-plug and so on.

I'm just trying to increase my knowledge , nothing more,nothing less.

Much & many thanks for any light on this subject.

P.K.



Here's too much information.

Because AC no longer makes this plug, one has to go by cross-referencing to other manufacturers that still make an "equivalent" plug and checking their application catalog.

The latest MY application Autolite lists their equivalent 303 plug fits 1970 Chevrolet/GMC trucks, including El Camino.

The latest MY application Champion lists their equivalent J8C fits 1968 passenger cars.

The latest MY application Denso lists their equivalent 5044 fits 1970 El Camino.

The latest MY application Champion lists their equivalent J8C fits 1968 passenger cars.

Based solely on this, AC probably stopped offering the AC44 around 1980 or thereabouts, assuming that they would (hopefully) have covered applications that uses the AC44 for 10 years beyond when the factory demand for them ceased. They probably covered it longer with an R44 (resistor) version.

The above info came from here (IMO, their website used to be much more informative): https://www.sparkplugs.com/Automotive-Parts-l134 .a...

In general, keep in mind that it it's always best to choose plugs based on application, not by cross-reference. Use the cross-reference only as a last resort.

The images below are pages out of the ACDelco plug catalog and shows the old and new numbering system. The new system doesn't have as detailed "intelligence" built into it like the old system.





Another thing about the older system; coper core plugs are denoted by a "dot" next to the plug number.



1987 IROC-Z 5.0L
1992 Lumina Euro 3.1L
2003 GMC Safari


Edited by paulo57509 on 05-03-20 03:16 AM. Reason for edit: Grammar

 
pauldian 
Contributor
Posts: 319
pauldian
Loc: seligman,arizona
Reg: 05-14-09
05-03-20 07:43 AM - Post#2792676    
    In response to paulo57509

  • paulo57509 Said:
  • pauldian Said:
1.This is for people with better memories than mine. Can anyone on here tell me what year they stopped supplying the a/c-44 spark plug ?
2. What year did they start making the extended tip plugs ?
3. Now they make a TS-plug and so on.

I'm just trying to increase my knowledge , nothing more,nothing less.

Much & many thanks for any light on this subject.

P.K.



Here's too much information.

Because AC no longer makes this plug, one has to go by cross-referencing to other manufacturers that still make an "equivalent" plug and checking their application catalog.

The latest MY application Autolite lists their equivalent 303 plug fits 1970 Chevrolet/GMC trucks, including El Camino.

The latest MY application Champion lists their equivalent J8C fits 1968 passenger cars.

The latest MY application Denso lists their equivalent 5044 fits 1970 El Camino.

The latest MY application Champion lists their equivalent J8C fits 1968 passenger cars.

Based solely on this, AC probably stopped offering the AC44 around 1980 or thereabouts, assuming that they would (hopefully) have covered applications that uses the AC44 for 10 years beyond when the factory demand for them ceased. They probably covered it longer with an R44 (resistor) version.

The above info came from here (IMO, their website used to be much more informative): https://www.sparkplugs.com/Automotive-Parts-l134 .a...

In general, keep in mind that it it's always best to choose plugs based on application, not by cross-reference. Use the cross-reference only as a last resort.

The images below are pages out of the ACDelco plug catalog and shows the old and new numbering system. The new system doesn't have as detailed "intelligence" built into it like the old system.





Another thing about the older system; coper core plugs are denoted by a "dot" next to the plug number.





Much Thanks , Very informative , Very much
appreciated.



 


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