#Th350 transmission mod#
#Th350 transmission manual#
#Th350 transmission free#

Thread repairs are covered in Chapter 2 and need to be done before you begin reassembly. Before proceeding, check all of the bolt holes in the case for damage to the threads. You can copy and paste this link to share: īefore you begin the assembly process, thoroughly clean the transmission case, and bolt it into a suitable holding ﬁxture.

#Th350 transmission free#

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#Th350 transmission mod#

VSS MOD ONLY AVAILABLE WITH THE SHORT TAIL TH350 6 INCH TYPE. If you are using VSS, reluctor and tail housing are available for $75.00. We can only build customer provided transmissions due to the scarcity of buildable cores. If you have a special application requiring a special adapter or output shaft, please contact us and we will be happy to provide it and quote a price for your special application. This transmission will support up to 500 RWHP.Īll units are available in either 2wd or 4X4. If you purchase a torque converter from us you will automatically get the 2 Year Warranty Upgrade. This option provides you a 2 Year Warranty on your PerformaBuilt transmission for an additional $125. This transmission comes with a 1 Year Warranty. This unit is built to take a beating and will live up to the PerformaBuilt name

#Th350 transmission manual#

Shifts are very aggressive – more so in the full manual version. These Transmissions are for the all out race enthusiast. The units can be set up for VSS (vehicle speed sensor). No speedometer gears are installed in the unit, but they are available at additional cost. The pan and tail housing are now installed.ġ1. Additionally, a new adjustable modulator is installed.ġ0. The valve body is carefully cleaned and disassembled, all the valves are checked for wear and proper movement, and the PerformaBuilt Performance Shift Kit is installed according to the order preference. The pump is then carefully aligned and installed.ĩ. New hardened metal sealing rings are installed on the pump shaft. Seals for the intermediate piston are replaced and the return cage modified. The Pump is now inspected and the bushing and/or gears are replaced as needed. The intermediate overrun band is installed, followed by 3 heavy duty high energy intermediate frictions.Ĩ. A hardened intermediate clutch race and heavy duty roller sprag are then installed on the direct clutch drum and it is placed in the case. This drum is also modified to increase the apply area of the piston by 100 percent over the stock setup.ħ. Heavy duty high energy frictions and heavy duty steels are installed. The direct clutch drum is then inspected before the piston and seals are placed into the drum. The wave cushion plate is omitted, when possible, to add an additional friction.Ħ. Then the new Performance high energy frictions and heavy duty new steels are installed. The forward clutch drum is carefully cleaned and inspected before the piston and seals are replaced into the drum. The rear end-play is checked and adjusted as needed to precise tolerances.ĥ. The front planetary is inspected and installed along with the shaft support clip. The sun shell and gear are then inspected and installed with bushings to ensure a good center clearance, which is important for high rpm driving.

Next, the heavy duty low roller clutch and support are installed along with the case reinforcement insert.Ĥ. The rear planetary set is then inspected and installed in the case, followed by the high energy low reverse frictions and new steel pressure plates, all set for ideal clearance for racing and high speed down shifts. New seals are installed, the piston is carefully installed in the case and static air tested for proper “apply”.ģ. These are a high-stress point in the TH350 when used heavily for manual down shifts. The low reverse piston is then inspected and replaced as needed.

As the case cools it is painted with a high gloss paint/sealant providing an excellent finish and sealing it from the elements.Ģ. Then the case is heated to approx 250 degrees to remove all water and to allow for additional inspection and testing.

The case of each unit is carefully inspected, checked for cracks and stress, and cleaned in our heavy duty parts cleaner. Its features include the following components and modifications (nothing but the best):ġ. The PerformaBuilt Performance TH350 Transmission “Full Auto/Manual Stick” allows you to hold any gear to any speed, down shift at any speed, and is street friendly.