autolite plug numbers for iron heads

[karolko]

i know this question has been answered in many previous threads, but for some reason i always forget which is which and searching it here has been difficult at the best of times.

Can someone please clarify thewhich Autolite plug ( 23 and 24) is for pump gas and c16

Also could someone also list the comprable NGK plugs to the Autolites.

Thanks in advance,


Adrian

 

[krom]

I used 24's for stock boost and the 23's for all the rest of the times irregardless of fuel.

 

[dpasadena]

i know this question has been answered in many previous threads, but for some reason i always forget which is which and searching it here has been difficult at the best of times.

Can someone please clarify thewhich Autolite plug ( 23 and 24) is for pump gas and c16

Also could someone also list the comprable NGK plugs to the Autolites.

Thanks in advance,


Adrian

I use the 23 racing plug with zero issues with pump gas and alky

 

[bad V6]

I've been running the Autolite 24 spark plug with a mix of 93 and 116 and alky. The corresponding NGK plug is a UR5.

 

[gnpoweredrail]

gapped at what??? What coil setup??