Sonnax 77284-K Transmission Front Planet Kit, 2.84 Ratio w/ Input Sun Gear 4L60E Alto ATS High Capacity Aluminum Transmission

ATS High Capacity Aluminum Transmission Pan

Cooler fluid lubricates better which helps increase transmission service life and reduce service costs

Other Part Number: F8RZ-7A398-AA

29% additional clutch surface area vs stock

Smooth engagements

Sonnax 77284-K Transmission Front Planet Kit, 2.84 Ratio w/ Input Sun Gear 4L60E Alto ATS High Capacity Aluminum TransmissionBrand: Sonnax Other Part Number: S74582HDK Items Included: Heavy Duty Front Planet with Sun Gear Manufacturer Part Number: 77284 K Universal Fitment: Yes Vintage Part: No Performance Part: Yes 4L60, 4L60 E, 4L65 E, 4L70 E 2. 84 Ratio Input Carrier Kit Part No. 77284 K The steepest first gear ratio of any four speed automatic (3. 06) belongs to the GM 4L60 (700 R4) 4L60 E family of transmissions. The shift from 3. 06 ratio (1st Gear) to 1. 63 ratio