I've used autolite platinums and a couple different champions and mine really ran poorly with those, especially the champion "truck" plug. Haven't ran anything else but it has run best on the 3923 by far. NGK does make a good plug but since the 3923 works so well there's really no reason for me to switch. I would like to go one step up on the heat range just to see if it will run a little more cleanly when the engine is cold without creating any other problems.

 

Not trying to jack a thread here, but whats your setup to be running 10s? 408 on juice?

 

2003 CC R/T
408 stroker
Balanced/Blueprinted
Eagle 4340 Steel Crank
JE forged pistons 8.5-1.0
Eagle 4340 H-Beam rods
Federal Mogul Hellfire Rings
Clevite Bearings
Billet timing chain
Milodon Windage Tray
ARP Bolts
Garrett GT4276 Turbo 14lbs boost
AMS-500 Boost Controller
MSD 8.5mm wires
M1 4bbl
Accel 1350 cfm 3bbl TB
Crane Gold Stud Mount
1.6 RR
Snow Performance Stage 2 Meth Injection
Treadstone Air/Air intercooler
4" SGL exhaust into
Dual 3" exhaust
Cat's removed,
Flowmaster Super 40's
180 thermo
Autolight 3923's
Comp cam 242/248 dur .579/.582 lift
R/T 2.02 heads fully ported
75Lb Racetronics Injectors
Accel Gen 7 DFI
Custom Fuel system including aeromotive 1000 fuel pump
Precision Industies "Viper" convertor 4,000 stall
Moore Performance SRT hood
MT ET Drags 28x10.5x15
QA-1 drag shocks
Comp Eng Slide-a-links
B&M Quicksilver floor shifter
Detroit Locker 3.92 gears
Auto meter ultra lite gauges
- Vacuum/Boost
- Fuel Pressure
- Tranny Temp
- 5" Monster Tach

 

it says I can't vote, but use whichever ones are cheaper at the time that have copper, champion or autolite.

 

Yea, for the polls you have to be a member for at least a month and have 30 posts... i think.