Tech Resources Transmission Video GM Rebuilding Tips
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October 28, 2019
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The Ultimate 4L60E Reaction Shaft Upgrade for Big Power Transmissions

Presented by Sonnax

​​​​​​​​​​​​​​GM 4L60 (700-R4) and 4L60E series reaction shafts can suffer from spline twist and wear in high-torque applications due to the soft, weak steel of OE and most aftermarket shafts. Sonnax heavy duty reaction shaft 74602-01K is made from high-strength chromoly steel alloy to eliminate these problems. It's also a universal fit for all carrier styles thanks to the included bearing and shim, making it an easy, reliable way to build extra durability into any big power 4L60E transmission. Watch this video to see how it all comes together.

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Related Units

4L70-E Transmission 4L60 Transmission 4L60-E Transmission 4L65-E Transmission


Related Parts

Required

Recommended

4L60, 4L60-E, 4L65-E, 4L70-E Heavy Duty Reaction Shaft Kit 74602-01K

4L60, 4L60-E, 4L65-E, 4L70-E

Heavy Duty Reaction Shaft Kit 74602-01K

Universal kit, fits all years and all input carrier styles.

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technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time.

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