Austin, my cam calls for a 2000k stall. It makes power at 1800-5500. So I believe that 2500, (it was made for big block torque) will be perfect. If I kept the 3.08 it might push that converter to 2800 or 3k. The 3.42 will take about 15% of the load off the motor. So I should be just fine. Cross my fingers. CadMan and many others run higher stalls. But I believe they have lock up stalls. On older posts back in the day, Depending on tire size, the 3.42 and up were racing gears for this motor. I have been told by Tom that 3.08 gear would perfect with the weight reduction and performance increase of the motor and trans. I have a friend (John)who does Mud Boggs, his Chevy 454 rear crush sleeve, crushed alittle more that he needed it to during a run. He believes his rear end went due to the crush sleeve failing. He was at the edge of his pinion drag and thought it all good. Lasted for a while, he said he always felt like this was going to bite him later. He believes it did. Now he has a crush sleeve eliminator. Its a pain to install. So Ive been told. He is going to help me set my back lash, as he has a bunch of bearing spacers from bone yard diffs. Kinda excited to have a bit of help. 3.42 gears 2500 stall Hughes HD BP400 Made for performance big blocks. Hughes rep said it would be perfect for my street driven car. Its made to be thrashed on behind the big block.