Spark plugs for Dart heads
 

Dart recommends using Autolite AR133 plugs for the heads I purchased.
So I go to Kragen and get these plugs, and notice the end of the ground is at an angle away from the electrode(anyone using these plugs knows what I am trying to describe). My question is: what gap should these particular plugs be run at?
I'm using them on a 383
MSD ignition
72cc chamber, 200cc intake iron eagle heads
.560 lift, 286 duration roller cam

Now I wish I would have asked you people what plugs to run [I]before[I]I bought them:crazy:

ive got the same heads and run delco r45ts with no problems

:iagree: Those AR133 are "Autolite Racing" plugs. I ran a few sets in my Dart heads then switched over to the stock replacement autolites and the car ran a little better. I do more driving around town and the race plugs were probably a little too cold for me. The regular plugs are MUCH cheaper and easier to find. :thumbs:

-Mark.

Thanks for the replies! I already have these plugs, I'll try them and how it runs.
Any suggestions on the gap?

ttt

.035 - .045 Should be good if you are running HEI. Or a high output coil.
I like a little closer gap.
:thumbs:
Steve

I use the Autolite Racing Plugs AR3933 for my Dart Pro1 as called for by the Dart spec sheet (and on the website) and gapped them at .035. Seems to work fine.