chrstphrfenton

I have 91 Coupe with a 327 stroker with edelbrock performer heads and vortec supercharger (the small boost one 5-6psi)
I know edelbrock recommends champion RC12YC but is that good for my combo or should I run somthing else and what gap any suggestions are greatly appriciated thanks.

uedlose

I just run old copper autolites 2 heat ranges colder then what they recommend as far as gap I would start at .030 if you get spark blow out then close them up some if you don't then you could go wider. I only run about .025 but I also run much higher boost. You may even get buy with only one step colder with the low boost numbers. If you have a MSD and a hotter coil you may also get by with a wider gap it is all T&E.

chrstphrfenton

Yea I was wanting to swap to autolite 3923 or 3924 just wondering which was best I will prob go one step colder and see how they do.
I have (MSD) street fire box and coil so not sure on gap I will try .30 or .35 and see.
Thanks for the info.

adrnlnjnky700

im running 3923 at .035 with the same supercharger.

deathsled

I use Bosch platinum +4. No gapping needed and Saleen runs great.

mjr46

that's fine, however the OP is running boost, what uedlose stated is exactly what the OP needs to do.

chrstphrfenton

Thanks for the input the car has Champion RC9YC plugs in it now I noticed it is same heat range as 3923's but now another question the champions are non resistor but I drive on the street in traffic mostly so resistor type or non-resistor type?
Sorry just got this car in febuary and never had F/I car so just trying to learn a few things.

chrstphrfenton

I will be taking it to the track this summer and it's not tuned so it runs rich.