Sonnax Archives - Transmission Digest
Sonnax highlights 1350 Series three-bolt adapter flange yoke kit

Sonnax highlights its three-bolt adapter flange yoke kit for the following transmissions: 6L80, 6L90, 8L90, 10L80 units, TR6060, TR3160 manual units. It also fits 2005–2006 Pontiac GTO (differential side). According to Sonnax, users can effectively replace weak giubo and two-piece driveshafts with a one-piece, u-joint style driveline by installing this kit (part no. T35-GMFD-01K).

Sonnax introduces Ford 6R center support sleeve

Sonnax has introduced a hardened steel center support sleeve for Ford 6R60, 6R75 and 2009–later 6R80 transmissions. According to the company, users can restore proper hydraulic control and prevent future wear in these transmissions caused by the 3-5-R “B” clutch housing sealing rings by machining 2-6 “C” clutch housing bore (center support) and installing this

GM 9T series: Critical wear areas, vacuum test locations

Sonnax has provided the following guide on critical wear areas and vacuum test locations for the GM 9T series of transmissions. Technicians working on these models should find this guide helpful. Read more stories from our TASC Force Tips series here.

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Sonnax introduces Ford 10R140 TCC signal damper piston kit

Sonnax has introduced a new drop-in TCC signal damper piston kit for Ford 10R140 transmissions. The company says users can correct circuit pressure variation in these units by replacing the worn OE damper with this kit (part no. 105740-07K). This kit includes an O-ringed sleeve and no reaming is required.

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Sonnax introduces oversized cooler/lube flow control valve kit

Sonnax highlights its oversized cooler/lube flow control valve kit for Toyota UA/AB transmissions. Sonnax says users can recover hydraulic control and restore cooler/lube performance in Toyota/Lexus UA80E, UA80F, UB80E, UB80F transmissions by reconditioning the bore and installing this kit (part no. 168740-08K). According to Sonnax, the kit features an extended outboard spool that is 164%

The torque converter can of worms: Lockup and aftermarket programming

Lockup torque converters have been around now for some time. They came into production around the time when fuel mileage demands were put into effect by the government, and the auto manufacturers needed to do something to better connect the fluid coupling (torque converter) of the automatic transmission to the motor. By doing this, OEMs

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Sonnax introduces drop-in 4-5-6 sleeved accumulator piston kit for GM 6T series

Sonnax has introduced a drop-in 4-5-6 sleeved accumulator piston kit (part no. 124740-68K). The company says users can recover hydraulic control and renew shift feel and performance in GM 6T70, 6T75, 6T80 (Gen. 2) transmissions by installing this kit. This kit provides a positive sealing O-ringed sleeve to eliminate oil leaks and restore normal shift

Sonnax introduces TCC apply limit switch valve kits for Chrysler RFE series

Sonnax has introduced a drop-in TCC apply limit switch valve kit for the Chrysler RFE series. The company says you can limit the amount of pressure applied to the torque converter in Chrysler RFE transmissions without affecting line pressure or creating drivability issues – even in chipped vehicles, with this kit. This, Sonnax says, protects

Sonnax introduces GM 6L80, 6L90 output planet saver kits

Sonnax has introduced new output planet saver kits for GM 6L80 and 6L90 transmissions. The company says these kits can repair and prevent common concerns and save the planetary assembly when installed. The kits (part no. 104584-80K for 6L80 and 104584-90K for 6L90) include upgraded pinion pins to supply continuous lube to the small gears.

Watch out for high pressure in GM 8L45, 8L90 valve bodies

Hey now! Oh boy, do I have a fun failure to share with you and warn you about today! Have you encountered a crack in the worm tracks in your GM 8L45 and 8L90 valve bodies (as seen in Figure 1, above)?  Sonnax has, and wow, is it frustrating. Once cracked, there is no way

Sonnax introduces Smart-Tech clutch kit for GM 4L series

Sonnax has introduced a new Smart-Tech clutch kit for optimizing clutch capacity and guarding against clutch burnup in GM 4L60, 4L60-E, 4L65-E and 4L70-E transmissions. This kit (part no. 77734-01K) includes eight .067-in. BorgWarner high-energy frictions and seven .095-in. Lindered steels recommended for use with Sonnax Smart-Tech input housings.

Sonnax introduces oversized low reverse/overdrive clutch regulator valve kit

Sonnax has introduced a new oversized low reverse/overdrive (4-5-6) clutch regulator valve kit (part no. 144740-43K) for Ford 6F35 transmissions, generations one, two and three. Sonnax says the kit can help restore the correct valve/bore clearances and clutch control in these transmissions. The kit includes a new spring that matches OE calibration, the company notes.