The FTI Performance 9.5in Street Racer SRL billet lock-up torque converter for 4L80E/4L85E transmissions is an LS 3800 hard-hit stall option tuned for demanding street and race applications. SRL components include a CNC-machined billet front cover and a billet lock-up piston to reduce premature clutch wear. It pairs custom stator and pump geometries with furnace‑brazed and heli‑welded fins, severe‑duty sprague and an anti‑ballooning flanged impeller hub for rugged, long-lasting operation.
FTI 9.5in 4L80E/4L85E Billet Lock-Up Street Racer Series - LS - 3800 Hard Hit Stall