47RH Stage 4 Package, 1994-95 Dodge 2WD & 4WD
In re-designing the 47RH, ATS addressed inherent weaknesses to produce a strong, reliable transmission for towing, daily driving or racing. The result is a transmission featuring:
- Five Star billet torque converter
- Performance transmission pump
- Modified high performance clutch packs/bands and steels
- Valve body built around reliability and increased transmission life
- ATS billet 300M input shaft and forward hub
- ATS Commander Lockup Controller
- ATS billet flex plate
- Deep pan for added cooling and convenience
The modification process began with the torque converter. Instead of a stamped converter with a single lock-up clutch, the ATS Stage 4 47RH comes with our patented Five-Star torque converter. Utilizing a billet 12 bolt cover, five square tab lock-up clutches, a billet stator and other modifications, this converter is designed for heavy loads, years of reliability and brute power. The goal is to efficiently transfer your 12V's power through the converter into the transmission.
In order to handle the increased efficiency of the converter, we addressed the 47RH from bellhousing to tailshaft. The transmission's pump is modified to progressively raise line pressure, above the factory settings, to provide clamping force to the clutch packs. High-performance clutch packs are then added. Pressure plates are precisely machined to add 1 more forward and 1 more direct clutch. High performance bands, billet band strut, billet accumulator piston, and heavy duty overdrive bearings strengthen the clutch pack/band assembly.
Next is the valve body. Dodge 47RH transmissions can be plagued by sticking throttle valve issues. The valve controls shift timing and fluid flow to the clutch packs. When the valve sticks, there can be a no up-shift condition. In time, this can wear on the clutch packs and internals to hasten the transmission's life. ATS machines the bore to accept a Teflon sleeve, this ensures precise movement and control of the valve. In addition, the valve body is modified to circulate fluid in park, reverse and neutral, capable of locking the torque converter in any forward gear, and raising line pressure vs. stock.
On the Stage 4 build, ATS adds a billet 300m input shaft and forward hub. Featuring a two-piece design, the input shaft is designed to withstand greater than stock power, torque converter lock-up sooner than stock, increased towing weight and racing applications. The increased capacity comes from the material itself, which is stronger than the factory input shaft. This is coupled with a precisely engineered shaft, directed at absorbing torsional loads from increased power, and transferring it into the transmission.
The Stage 4 (as well as all ATS Transmission Packages) comes standard with the ATS Deep Pan. Featuring a finned design to dissipate heat, and adding five quarts of fluid vs. stock, the pan helps keep the transmission running cool. The ATS 47RH Stage 4 is designed for trucks with stock to extreme power increases, light and heavy towing and daily driving.
In addition, we include the ATS Commander Lock-Up Controller on this package. This controller allows the user to base lock-up on vehicle speed. Torque converter lock-up can be moved to 1st, 2nd, 3rd gear or overdrive and can be changed at any time. Our controller features in-cab adjustability, so settings can be changed with the push of a button. Every time the vehicle reaches the set speed, the converter locks. The benefit of early lock-up is reduced transmission temperatures, quicker acceleration and better fuel economy. The ATS Commander Lock-Up Controller will also synchronize lock-up with an exhaust brake, for additional braking force.
For added strength at power levels above 450 hp, the ATS billet flex plate is included on the Stage 4. The flex plate is first hard part in the transfer of power from the motor to the torque converter/transmission. As more power over stock is added, the OEM flex plate fails to hold and eventually cracks or breaks. This means the loss of all motion in the vehicle. ATS billet flex plate features a stronger material than stock, precisely machined surface for a perfect fit, and the peace of mind needed to handle power and towing weight.
For moderate to extreme power applications, heavy towing or competition use, call ATS to discuss which transmission package would fit your application. All ATS transmission packages come backed with a 5 year / 500,000 mile warranty.