Spark plug recommendation

[vlzman]

Hi, planning to change spark plugs as one of them doesnt give spark enough, could anybody recommend what kind of spark plugs do use with my stage 2. I had Autolite AR 3932-s but as Autolites aren't very common in my country then I'm looking for some alternatives like Bosch or NGK-s.
thanks
Veljo

 

[notacarlo]

What country?

If you can get AC Delco:

CR43TS gapped at .035 for low boost
CR42TS gapped at .042 for higher - 20+ psi.

Go to your local parts store and have them cross reference these two plugs and get the equivalent in what's available.

 

[ijames]

What heads are you running? I thought the 3932's are for stage II heads, while the cr42ts's are for stock style heads.

 

[vlzman]

Champion GN1R-s.

 

[NEVERLIFT]

Spark Plugs

Autolite AR3932

AC-Delco S40XL

Champion C55CX or C57CX

NGK R5671A-10 (STK# 5820)

Check out this link
Racing Spark Plug Cross Reference Chart