The Ford Barn

42guy · 07-27-2010, 08:55 PM

Anybody have an old application chart for Autolite? I have a box of AL-9 plugs which I think are for flathead. Tried their web site but it didn't have any info on them.

Cecil/WV · 07-27-2010, 09:23 PM

I use 216 in my 8BA.

V8 Bob · 07-28-2010, 08:08 AM

According to the charts I have, AL-9 plugs are Motorcraft std. (AL82 is the powertip) and cross with Autolite 217/497 and Champion H11. These are all flathead plugs, (7/16" reach, 13/16" hex) but one step hotter than normal.

harry goebel · 07-28-2010, 08:27 AM

I used Autolite plugs in my 55 Buick, in those days called power tip, lasted longer and better gas millage. I have also used extended tip plugs in my flat heads, but you have to do some measureing to make sure the valves do not hit the electrodes.

42guy · 07-28-2010, 09:43 PM

Thanks for the info.

82ndscotty · 07-28-2010, 11:32 PM

Sponsored Links (Register now to hide all advertisements)

al7 was the std plug for flatheads al9 was 1 step hotter. al7s worked well,that was 50 60 years ago. scotty

07-27-2010, 08:55 PM	#1
42guy Senior Member Join Date: May 2010 Location: New York State Posts: 289	Autolite Spark Plug Anybody have an old application chart for Autolite? I have a box of AL-9 plugs which I think are for flathead. Tried their web site but it didn't have any info on them.

07-27-2010, 09:23 PM	#2
Cecil/WV Senior Member Join Date: May 2010 Location: Gerrardstown, WV Posts: 2,266	Re: Autolite Spark Plug I use 216 in my 8BA.

07-28-2010, 08:08 AM	#3
V8 Bob Senior Member Join Date: May 2010 Location: Granger (Northern) Indiana Posts: 1,523	Re: Autolite Spark Plug According to the charts I have, AL-9 plugs are Motorcraft std. (AL82 is the powertip) and cross with Autolite 217/497 and Champion H11. These are all flathead plugs, (7/16" reach, 13/16" hex) but one step hotter than normal.

07-28-2010, 08:27 AM	#4
harry goebel Member Join Date: May 2010 Location: Miami, Fl Posts: 74	Re: Autolite Spark Plug I used Autolite plugs in my 55 Buick, in those days called power tip, lasted longer and better gas millage. I have also used extended tip plugs in my flat heads, but you have to do some measureing to make sure the valves do not hit the electrodes.

07-28-2010, 09:43 PM	#5
42guy Senior Member Join Date: May 2010 Location: New York State Posts: 289	Re: Autolite Spark Plug Thanks for the info.

07-28-2010, 11:32 PM	#6
82ndscotty Member Join Date: May 2010 Posts: 35	Re: Autolite Spark Plug Sponsored Links (Register now to hide all advertisements) al7 was the std plug for flatheads al9 was 1 step hotter. al7s worked well,that was 50 60 years ago. scotty