The GM25HDX torque converter is our latest addition to our heavy duty torque converter product line.  This new model is based on the proven and popular GM25 torque converter, but offers several key upgrades to enhance strength and durability in extreme high output applications.

New TH400 reverse pattern manual valve body with engine braking now available!

Hughes Performance is now offering a full manual valve body with reverse shift pattern and full engine braking in all forward gears under part number HP2211EBR for the TH400 transmission.  The reverse shift pattern in this valve body is P-R-N-1-2-3.  This valve body is an excellent choice for off-road applications that can benefit from being able to rapidly cycle from low gear to reverse and back with the reverse shift pattern all while still retaining engine braking in all forward ranges for maximum braking ability while decelerating downhill or on an off-road race course.  This valve body is also ideally suited for anybody with a street car that would prefer a reverse shift pattern but would also like to be able to downshift the transmission under power and/or load.

Hughes Performance is excited to announce that we are now including an upgraded constant pressure valve body in all of our Street/Strip 700R-4, 200-4R, and Ford AOD transmissions at no additional charge!  The constant pressure valve body is a superior design that offers clean, crisp shifts along with significantly more consistent shift timing.  The most exciting part about the constant pressure valve body is that the T.V. system no longer has any affect on line pressure.

This means that an incorrectly adjusted T.V. cable will no longer contribute to a premature transmission failure.  With the constant pressure valve body installed the T.V. cable is only used to set shift timing and provide kickdown function.  You can now fine tune your T.V. cable adjustment to provide the shift timing you desire for your driving style without fear of burning up your transmission.

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HP7498HD TRANSBRAKE SOLENOID TIPS FOR PROPER OPERATION
The Hughes Performance HP7498HD transbrake solenoid is a unique oversize heavy duty solenoid assembly that is rebuildable with our readily available replacement coils and seal kits.  This solenoid is designed specifically for use with our HP6282 and HP7482X Powerglide transbrake valve bodies.  This solenoid is also included as standard equipment on all of our transbrake-equipped Powerglide transmission assemblies.

Caution must be exercised when installing the HP7498HD solenoid into your Powerglide transmission.  This solenoid features a unique length of plunger travel that is generally only compatible with a Hughes Performance HP6282 or HP7482X Powerglide transbrake valve body.  Use of the HP7498HD solenoid with a different brand of Powerglide transbrake valve body may result in the incorrect function of your transbrake and could potentially lead to damage in your Powerglide transmission.  Hughes Performance only recommends the use of the HP7498HD solenoid with a Hughes Performance HP6282 or HP7482X transbrake valve body.

Torque converter stall speed is the maximum amount of engine RPM that can be achieved in an automatic transmission-equipped vehicle while the transmission is in a forward operating range without generating any driveshaft motion.

All advertised stall speed ratings of all torque converters are nominal ratings regardless of the manufacturer or converter design. These advertised ratings are not indicative of the actual stall characteristics of a torque converter. Advertised stall speed ratings are published simply as a general guideline to help in the selection of the correct torque converter for a customer’s application. A torque converter will provide a range of stall speeds based on the amount of load that is placed on the torque converter. Many factors influence torque converter stall speed including; output torque of the engine, vehicle weight, rear axle ratio, rear tire height, torque converter diameter, impeller fin angle design, stator design, impeller-to-turbine clearance, stator-to-impeller clearance, stator-to-turbine clearance, and brake bias.

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The XP5 is the newest generation and most innovative Powerglide racing transmission currently available throughout the entire aftermarket. This uniquely engineered Powerglide features custom hydraulic lock-up circuitry and a specially designed lock-up torque converter, all of which is activated by a 12-volt solenoid located inside of the transmission for fully integrated and seamless operation. That’s right… the lock-up mechanism and circuitry is all SELF-CONTAINED within the transmission, and requires a simple single wire 12-volt input through our custom case connector.