Chevrolet Performance offers the 4L65E as a remanufactured four-speed overdrive for rear-drive LS V8 swaps. Rated for up to 430 ft-lbs of torque per factory specs, it suits builders working on performance cars, trucks, and SUVs that ran the 4L60E or need something stronger. While it shares the same case footprint, tougher internal parts let it handle more power. This complete unit saves you from chasing down individual drivetrain parts.
An electronic control system manages shifts through a 30-input-spline setup housed in an aluminum case. Gear ratios run 3.06 first, 1.62 second, 1.00 third, and 0.70 overdrive in fourth. What sets this unit apart from a standard 4L60E? Upgraded internals: five-pinion gearsets, heat-treated stator shaft splines, an induction-hardened turbine shaft, seven-plate clutch packs, a shot-peened output shaft, and revised valve body calibration. Those changes are why it carries the higher torque rating. The transmission does not ship with a torque converter, so plan to source a matched converter separately. Rebuilding a worn core instead? Individual clutch components and an output shaft are stocked separately.
Whether you are swapping an LS into a custom chassis or replacing a tired factory auto behind a 5.3 or 6.0, this offers a known-good path backed by a General Motors limited 12-month warranty. Expect roughly 250 lbs in its shipping crate, so arrange liftgate or forklift at delivery. Pair it with the matched converter, cooler lines, and brackets before setup. See the full drivetrain catalog for shift cables, yokes, and the small parts needed to wrap up the job.
Frequently Asked Questions
Does the 4L65E transmission come with a torque converter?
No. This remanufactured 4L65E ships without a torque converter, so you will need to source a converter matched to your engine, stall speed, and intended use. Confirm the input spline count and pilot dimensions on your converter match the transmission before installation.
How much torque can the 4L65E handle?
The 4L65E is rated to handle up to 430 ft-lbs of torque per manufacturer specifications. The higher rating comes from upgraded internals like five-pinion gearsets, seven-plate clutch packs, an induction-hardened turbine shaft, and a shot-peened output shaft compared to a standard 4L60E.
What engines does this transmission fit?
This 4L65E is built for LS series V8 engines in rear-drive applications, including common 4.8, 5.3, and 6.0 swaps. It uses a 30 input spline configuration and an electronically controlled valve body, so it requires a compatible engine controller or standalone transmission controller.
What are the gear ratios on the 4L65E?
The published gear ratios are 3.06 in first, 1.62 in second, 1.00 in third, and a 0.70 overdrive in fourth. The overdrive fourth gear lowers cruising RPM for highway driving while the deep first gear helps launch heavier vehicles.
Is this transmission new or remanufactured?
It is a remanufactured unit rebuilt to handle higher torque than a stock 4L60E. It is backed by a General Motors limited 12-month warranty and arrives ready for installation once you add a matched torque converter and the correct cooler lines and mounting hardware.
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