Performance Archives - Transmission Digest
Chrysler RH/RE late shifts and high pressure

You may find that these transmissions have a late 1-2 and 2-3 shifts along with high TV/line pressure.

American Powertrain introduces ProTwin disc clutch for GM, Ford and Mopar

American Powertrain announced that it now offers a new ProTwin twin disc clutch kit for GM, Ford and Mopar performance applications. The kit comes with a billet steel flywheel, pressure plate, two drive discs, floater, flywheel crank bolts, pilot bearing and alignment tool. Each clutch kit comes fully balanced and features 1100 ft./lbs. of torque

American Powertrain offers Camaro Tremec GM Magnum XL six-speed transmission conversion kit

American Powertrain now offers a Tremec GM Magnum XL six-speed transmission conversion kit for any 2010-2015 fifth-generation Camaro (SS) equipped with a V8 engine. This kit can be purchased with a choice of two gear sets as a replacement for the TR-6060, and is rated at over 700 lb./ft. torque with close to 8,000 RPM shift

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Circle D Specialties acquires Reid Racing

Circle D Specialties, a manufacturer of torque converters and driveline components for the automotive aftermarket, has announced the acquisition of Reid Racing, a maker of performance transmission cases and specialty heavy-duty axle components for off-road vehicles. “We see this acquisition as a perfect fit, as we look forward to building upon the top-notch level of

ATI introduces pressure regulator valve, boost valve kit for T400

ATI Performance Products has introduced a new solid pressure regulator valve for GM T400 pumps (part no. 4050120) and a boost valve kit for the T400 (part no. 405136). Both parts are new OEM style replacements and will work with OEM and aftermarket mating parts with no modifications, the company says. The pressure regulator valve

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ATI introduces flexplate and bell kit for Ford 7.3L Godzilla engines with GM transmission

ATI recently introduced a new SFI Flexplate and SuperCase Bellhousing kit for the Ford 7.3L “Godzilla” engine. Part no. 202816 includes an SFI SuperCase Bellhousing that fits all of the ATI SuperCase transmissions. It also includes part no. 915740, the SFI 29.1 flexplate, billet steel crank adapter and a bolt kit, which the company says

Dana offers Spicer performance differential covers

Dana Inc. offers Spicer nodular iron performance differential covers that it says are engineered for off-road performance and help protect the intricate differential parts on a vehicle. The differential covers also have the added advantage of coming pre-primed from the factory so that enthusiasts can customize the color of their differential cover, Dana says. “Differentials are

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ATI introduces pressure regulator valve for Powerglide valve B

ATI Performance Products has introduced a new OEM-style pressure regulator valve for Powerglide valve bodies. According to the company, this OEM-style replacement and will work with OEM mating parts with no modifications. The part no. is 203181 and the valve was made in America.

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The evolution of diesel transmission maintenance

It’s no longer a secret… heck, it’s no longer that special for a diesel engine to make 1,000-plus horsepower. It’s become commonplace, and due to that increased capability, it seems that these days, OE manufacturers are rating transmissions at their absolute limits. As soon as you add a little more horsepower or work your truck

Sonnax releases splined stub and sleeve kits for performance vehicles

Sonnax highlights its new aluminum splined stub and sleeve kit, which the company says can reliably drive power from the engine and transmission to the differential in modern muscle cars and custom street rod/hot rod vehicles. These kits make it easy to build, balance and service a rugged performance driveshaft for non-slip-yoke applications, since the

American Powertrain offers Tremec TR-4050 kit for Chevy/GMC trucks

American Powertrain now offers a Tremec 4×2 TR-4050 five-speed Pro-Fit HD manual transmission kit designed for 1988-98 Chevy/GMC OBS light- and medium-duty trucks. The Chevy/GMC OBS 4×2 kit includes a short throw White Lightning Shifter designed for the TR-4050, a crossmember adapter bracket that works with the original factory crossmember, bell housing, hydraulic bearing, pilot

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ATI introduces new e-clutch hub for ZF8HP51

ATI Performance Products has introduced its new billet aluminum E-Clutch Hub for fifth generation Toyota Supras and BMW vehicles equipped with ZF8HP51 automatic transmissions. This new ATI part no. 711014 is a direct replacement for the OEM part no. ZF-1101-471-029 and is available now.   According to ATI, for this new part, improvements were made to

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