#4L60E PRECISION TRANSMISSION HOW TO#
#4L60E PRECISION TRANSMISSION UPGRADE#
#4L60E PRECISION TRANSMISSION FULL#

Raybestos clutches come with friction materials which reduce heat faster. Other components to consider include Raybestos forward, overrun, and reverse input clutches and steels. These ones will give your transmission around 18 percent more band-apply capacity. There are Second and Fourth-gear band servo pistons that are larger, which you can opt for. Second and Fourth-gear Band Servo Pistons:

Over and above that, opting for forward clutch apply pistons should be of the best quality (steel) to reduce the potential for failure. There’s also the need to use a Teflon-impregnated stator support bushing which offers more stability and smoothness. Clutch Apply Piston:Ī more enhanced hydraulic holding power and stability can be derived from the use of a larger 3-4 clutch overrun clutch apply piston coupled with an input drum reinforcement sleeve. This torque capacity is comparable to that of the 4L65E/4L75E transmission.Ī 29-element sprag for 700-R4, 4L60, and 4L60E is another useful component that will offer you more torque capacity. The result is evident in a spread of torque across a larger mechanical surface area.Īn increased torque can also be tied to the 400-500 horsepower support you’ll be getting from using a five-pinion front planet. This means you won’t be relying on the four pinions front planet.

#4L60E PRECISION TRANSMISSION UPGRADE#

Increasing the torque and horsepower capacity of the 4L60E transmission by 20% requires that you upgrade to a five-pinion front planet and ring gear. The latter helps to reduce friction in the area, as well, as heat. Your shell also needs to have a radiused spline area and Torrington bearing. To that effect, opt for a thicker sun shell whose center hub is stronger to ensure that the component stands the test of time. The factory shell may fail easily and end break around its hub. The 4L60E has its factory sun reaction shell, which is less durable than a customized sun shell. Nevertheless, there are still slight differences between the 4L60E and the aforementioned transmissions. You’ll notice that this transmission has a close resemblance to the 700-R4, 4L60, 4L65E, and even 4L75E transmissions. Rebuilding your 4L60E transmission requires that you disassemble its hard parts and lay them neatly on a bench. The goal is to give your 4L60E transmission a greater torque capacity and horsepower to improve its performance.Īccordingly, here’s what you need to begin: 1.

#4L60E PRECISION TRANSMISSION HOW TO#

How to Improve the Performance of Your 4L60E Transmission The 4L60E as a computer-control system features a powertrain control module (PCM) that aids in control using sensors like the throttle position sensor (TPS) and vehicle speed sensor (VSS).Ī rebuild of the 4L60E will make it a more reliable, solid transmission. This transmission is based on the 700-R4, which was launched to handle fuel economy. On the other hand, the 4L60E denotes a “4” four-speed, “L” longitudinal installation, “60” light-to-medium-duty use, and 6,000-pounds gross vehicle weight that is “E” electronically controlled.

#4L60E PRECISION TRANSMISSION FULL#

It’ll have more durable components, increased torque and horsepower, and be more rugged for the road.Ī rebuild of this nature allows you to gain the full benefits evident on higher transmission models. Rebuilding your 4L60E transmission can transform it into a tougher performance transmission.

4l60e precision transmission