[JL8Jeff]

There is no "safe" shot. It's the same as running a supercharger or turbo. It doesn't matter if there is plenty of fuel and it's been "tuned" well. If there is too much cylinder pressure it will blow the ringlands off the top of the pistons. 6 lbs of boost will do that and I've even seen 4.5 lbs of boost do it to an LT1. The stock LT1 pistons are not very conducive to increased pressure. I wouldn't run more than a 100 shot otherwise start putting together a purpose built short block now.