CRG Discussion Forum
Camaro Research Group Discussion => Maintenance => Topic started by: fireZ on June 01, 2007, 08:11:57 PM
-
Anyone have a favorite plug to use in a stock 302 motor. AC43s seem to foul up terrible even with the carb lean.
-
I use R44S with no problems. ;D
-
AC44s are not made anymore, the easy substitute is Champion J12YC. Same plug. This is what we use.
Jerry
-
Thanks Jerry for the spark plug info. I recieved the 4th edition book this week,great source of information. It is a must if these cars are your passion.
-
Mine is driven normally around town and on the highway (not raced) with Jerry's distributor setup and 72/76 jetting, and I run AC R45S plugs (also run them in my small-block '67 Corvette), and I have no fouling issues at all (did have some fouling with 44's, and 43's are WAY too cold for normal street use).
-
i run 45s also. no problems
-
45s will work for cruising the streets. Only problem I found with them is in hot weather during the summer if you climb on the rpms a little, there is a good chance that the engine might ping w/36 degrees of total advance (93 octane). They definately will not foul out as easially as the 44s. Wanna keep the 44s clean, take 'er up to 7000 rpm once in a while...........now you're talking!
Jerry
-
There is no better sounding car than a 302 z ringing out at 7000RPM. I remember visiting my Grandpa at a local GM dealership and seeing these 302 cars coming in and out for service and test drives. No better rush for a young kid.
-
Mine is driven normally around town and on the highway (not raced) with Jerry's distributor setup and 72/76 jetting, and I run AC R45S plugs (also run them in my small-block '67 Corvette), and I have no fouling issues at all (did have some fouling with 44's, and 43's are WAY too cold for normal street use).
It's the same for the 69 302..correct?
-
Yes it is,
Jerry
-
AC44s are not made anymore, the easy substitute is Champion J12YC. Same plug. This is what we use.
Jerry
I discovered the Champion J12YC several years back while checking cross referencing charts. I tired 'em and like 'em in my 69 Z. I always have a couple of sets ready to go. Seem to be easy to find as well.
Jimmy V.