LS/Gen III-IV engines (4.8, 5.3, 6.0, 6.2, etc.) use a different crank pilot depth and flexplate spacing than traditional SBC/BBC. These 4L80E/4L85E builds are set up to bolt directly to LS engines without adapters.
All LS applications require the correct flexplate and converter setup. Our packages include a converter matched to LS spacing and stall needs. Multi‑disc options available for higher tiers.
Factory PCM/TCM can control the 4L80E/4L85E in many LS trucks/cars. For swaps or retrofits, we recommend standalone controllers (TCI, Holley, etc.). We provide baseline calibration guidance.
Yes. Flush or replace the cooler/lines at install to protect against debris and overheating. Overheating is the #1 failure cause and not covered under warranty.
Coverage is tiered per build—extendable up to 6 years total with Extend. Abuse, overheating, or improper tuning are excluded.
*Horsepower ratings are guidelines; weight, gearing, and tuning affect results. Step up a tier if in doubt.
