what is the higher stall that are you using on a stock lt1?
I'm runing 150 nitrous
4.11 rear end

 

4.10 with a 150shot?? I hope you are running at least a 28 inch tire to comp for the gear and juice,

I am Running a 3200Rpm Protorque converter with 3.73 and a bolt on LT1 and for now only a 100 shot, and a 26inch ET street and my Rpm is at peank when i cross the line,

 

no!, i have a 275/40/17 i think 25.25 inch tire, i wqant a 28 slick, i'm saving money to buy the slicks and wheels.

 

I'm almost max-ing out 3rd gear with the 4.10's in my car right now!! (running ~26" tires). Definitely get a pair of 28's for that, and/or get your rev limiter bumped up to ~6500 RPM at least.

 

a converter that stalls at 3200 will probably provide the best performance with your application pete,the more you bottle feed your baby ,the less stall youll need because the torque band will become more pronounced in the lower rpm band and itll be easier to overpower or drive thru the converter.we produce a nice 12 inch ls1 converter thatll produce 2800 rpm stall with a ballooning plate for nitrous.www.ckperformance.com