part number for colder plugs??

[Foxfan88]

i am wanting to get some colder spark plugs for my car. as i am nearing having it all together. can you get and colder range plugs at the parts store and if you can what are some part numbers??? or a plug name to get? i was wanting to get like 2 steps colder or so.

 

[a885.0]

I ran autolite 3923's they are a step colder than stock..

 

[clayschmuck]

I've used Ford Motorcraft ASF 32-C (one step colder than the stock ASF 42 Cs) and have had no problem with them ever....

Clay

 

[Lemonade]

Stock heads use an Autolite 25. A 1 step colder plug would be a 24, 2 steps colder than stock would be a 23. What are you doing to require a colder plug? Just curious.

Lems

 

[bentley429]

Yep, your going to want autolite 23's. They are two steps colder like previously stated. Gap them at .035".

 

[Foxfan88]

Stock heads use an Autolite 25. A 1 step colder plug would be a 24, 2 steps colder than stock would be a 23. What are you doing to require a colder plug? Just curious.

Lems

car has a blower i want to experiment i was running stock plugs.

 

[7-UP BILL]

car has a blower i want to experiment i was running stock plugs.

I run a blower w/ Autolite 23's. (see thread about Autolites being made in China now) They have a nice grey pattern on them. They have about 4yrs and 1K of mileage.

FYI, my heads are also Edelbrocks which use a plug w/ a longer shoulder? (threaded area). If anyone is using stock plugs w/ Edelbrock heads and are having detonation/combustion problems, the stock size plugs do not reach into the combustion chamber so the plug is essentially inside the threaded area and not firing the mixture correctly.

 

[PUNISHER RACING]

23's w/.035