Don't know Charles, if you have a cart or atv and can shut the car down at the end of the run and tow it back too the pits. Below is a pretty good read article by Meaux Racing Heads with pictures that show proper HT range, jetting and timing. We're running NGK 8's with a 468" 10.2CP, 200 shot timing at 38* with 4* retard when the nitrous is on. Probably got 40 to 50 passes on the plugs and will probably get 50 more. We just put mufflers on it so we can drive it to the Catfish festible in Winnsboro La., maybe even drive it in the 3 mi. parade April 10th, it's all pump gas. For sure it and the 34 coupe will be in the car show.
Zip.
http://www.dragstuff.com/techarticle...ead-plugs.html