April 28, 2017

4L60/E Performance & Heavy-Duty Transmission Build Charts

Questions? Email Sonnax Tech Support about this article.

Build the killer 4L60-E with Sonnax

Print Build Sheets

Use these charts to get maximum results out of your 4L60-E series rebuild! First choose your build type, then view the list of Sonnax parts recommended to achieve the ideal upgrade for your transmission.

Syclone racing cropped

Ray Lichtenberg's "Hated" Syclone

  • Level 3 Sonnax 4L60/E Build
  • 900 HP
  • 1,000 ft-lbs
  • AWD

Still going strong after 3 SEASONS on the road and track, Sonnax upgrades harnessed the Syclone's huge horsepower and massive torque during the 2017 Optima Ultimate Street Car Challenge.

Heavy-Duty Pickup Builds

Option A

Quick upgrades for big performance without a big price tag.

Option B

Best parts for heavy-duty recalibration and durability.


Level 1 Performance Builds

For lightly modified performance/enthusiast vehicles.

Options A and B are separate ways to get to similar levels of performance. Option A is easily done with transmission in the vehicle and does not require valve body removal. Option B has similar effect on shifting, etc., however these parts do require transmission removal and disassembly. If/when the Option A (4th and 2nd servo’s) is combined with Option B Performance Pack HP-4L60E-01, the result is very close to a Level 2 build.

Option A

Upgrades for performance recalibration and durability, no trans removal required. Most change in shift feel comes from the servos.

Option B

Best parts for performance recalibration and durability. Most change in shift feel comes from the Performance Pack.


Level 2 Performance Build

For moderately modified performance vehicles (up to 450HP).

Heavy-duty parts and recalibration allow transmissions to endure power levels beyond what a stock transmission is built to handle.


Level 3 Performance Build

For all extreme performance applications, above 450HP.

The ultimate collection of 4L60/E upgrades for maximum strength, durability and quick shifts, including Smart-Tech® parts to ensure trannies stay out of the shop. When installed in a 4L65-E or 4L70-E, a Sonnax Level 3 build delivers a big power tranny that not only exceeds the capabilities of the 650 ft-lb 4L75-E, but is moving well into 4L80-E territory. For those on the fence about swapping transmissions, it's a great way to avoid the complications and inefficiencies of converting to a 4L80-E.

This video breaks down how to transform a 4L60-E, 4L65-E or 4L70-E into a top-tier performance transmission with Sonnax Level 3 build components.

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While Sonnax makes every effort to ensure the accuracy of technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time.