Ok guys, the ls1 truck has the truck intake. I recently built a race tranny for it and installed a vigilante 3600 in it. The truck has 342 gears with 29.5 inch tall tires. This gear and weight is stalling the truck awful high. It seems to be slower since the converter, is this because it isnt making the torque due to the truck stalling at like 4400. I am going to install a 410 gear for sure to ease the stress on the converter. My question is should I convert to a ls1 intake and make the horsepower or should I go with a smaller stall or should I just put the 410's in and the stock converter to keep this machine lookin stock. The ls1 has a z06 cam installed, and im not sure how the numbers on torque are with this cam, if it makes power from down low or just mid to high.
I know the cam likes rpm but will it make power from the bottom as well and will the intake make power through several rpm's. The truck with the stock converter was tuned to shift at 6400 and rev limit at 6600, after the converter install it didnt seem to be making any power up there, so we brought it back down to like 5600 and limit at 5800.
the main thing is the intake, are any of you guys making power with high stalls and are you able to run around 6100 or 6200, this is where I would like to be. I really hope you guys can give me some good info, I need all the help and advice I can get.

keep in mind that with the 410 installed the converter should stall closer to the 3600, prolly about 3700 or 3750


thanks for your help in advance