FTI Performance SRL Series 9.5-inch billet triple-disc lock-up torque converter for 4L80E/4L85E transmissions (LS) is set to a 3600 rpm stall and engineered for above-average power. The CNC-machined billet front cover and billet lock-up piston pair with furnace-brazed, heli-welded fins and a severe-duty sprag to provide a rugged, repeatable lock-up solution for heavy-duty street or weekend race use.
FTI 9.5in 4L80E/4L85E Billet Triple Disc Lock-Up Street Racer Series - LS - 3600 Stall