cars an automatic. stall unknown. I'll be putting in a 25 to 2800 when i do the tranny. Gears are 3;55 or 3;91. I'll check tomorrow to know for sure.No tach in the car right now and speedo bounces to much to know for sure the actual speed. Have another cluster that was restored on the way with calibrated VDO tach installed. Car is not going to be raced. I'm just looking to get some good red light to red light thrills. Looking to make plenty of low end torque. A real good tire fryer