Reading Plugs: Clean cut with an automatic transmission?

[RyonPro1]

First I have to say the video was GREAT! Just had a question. I have a couple of cars and one has an powerglide transmission where it shifts 1-2 away from neutral not towards it. Any ideas to make this work with a clean cut? You should not cut the power while still in gear right? Thanks for your time.
Shawn Ryon

[speedtalk]

Thanks for the nice comment on the video. You've got to get to neutral for a clean cut. Best idea is to change the valve body when you get a chance. You can still get a good read on the ignition timing and heat range. The clean cut is for jetting. Thanks, Don
http://racingsecrets.com/spark_plug_reading.shtml

[maxracesoftware]

http://www.maxracesoftware.com/spark_plugs.htm

Link to article

reading spark plugs on the dyno is very easy
2 reasons=> 1) instant feedback with HP/Torque data
2)engine is cut clean immediately after dyno test..most times quicker than you would normally at DragStrip
so its very easy to read plugs, no guesswork

[speedtalk]

I think reading plugs on the dyno is really overlooked - you're not going to get a better opportunity to know what the plugs should look like for max power.