What Plugs to use for my Setup?

[MoneyGobblinFish]

Don,
I(Russ Snow) got my setup from you and getting ready to install it. Right now I have Autolites 3922's and they are black when I pulled them out. Should I wait until your setup is in before changing to a hotter plug?
For reference here's my setup again.

-408 stroker
-Protru -20cc dish pistons, zero deck
-57 cc ported Eddys. 10.7 to 1 compression
-.039 head gasketthickness.
-Sixpack dual plane manifold port matched with a total of 1350 cfm's through the carbs
-Center carb-64 jets
-Outboards-Promax billet plates with 84 & 82 jets
-XE284H, Xtreme Energy, Hyd Flat Tappet, 284/296-240/246@50-.507/.510-110 centerline
-Comp Cams SS Roller Rockers

-Flow #'s
.100"--79.4/58.7
.200"--151.8/118.7
.300"--212.2/168.4
.400"--254.6/200.8
.450"--269.1/212.1
.500"--276.0/219.8
.550"--280.1/221.8
.600"--281.6/225.6
.650"--282.9/225.6
.700"--284.7/225.6

2400-2800 stall speed convertor through a 727
3.91 suregrip
245/60/15 radials

Thanks!! ;D

[Don]

Hey Russ
I doubt that a plug change will help much, I would say you have a rich condition in the fuel system that needs to be addressed before you start changing plugs

[MoneyGobblinFish]

Thanks Don.
I'm not using a choke but I found the choke plate was partially closed. I need to either wire it open or remove the plate. I'll run it for a while and see what happens. I got your setup installed and man it fires right up and runs great! I did however have to back it off to 15 degree initial advance instead of 20 because it was cranking pretty slow when it was hot. It's a shame you can't incorporate a startup retard module in the ecm.
Thanks again,
Russ

[Don]

Looking at your cam specs you should be able to run 18-20 easily with that much valve overlap.
I'd be looking at a draw test on the starter, checking for adaquate grounds and battery condition, there is no way that if everything is correct you need to back that timing up.

I believe you have other issues.

As your reducing the initial your causing a rich idle condition and your retarding the total timing.

Have you done a static cranking compression test on tis motor? I'll bet it about 160 and any stock starter should not a problem with that number.

[MoneyGobblinFish]

Thanks Don, I did reset it back to 20 degrees and it's been fine. You're right on the money, my cranking pressures are 160. It's been running great, I need to recheck the valve adjustments but other than that she is happy! ;D

Thanks again Don and you have a great product!!