OVER 40 YEARS OF RACING TRANSMISSIONS
SHOP POPULAR TRANSMISSIONS AND COMPONENTS
POWERGLIDE TRANSMISSIONS
TH400 TRANSMISSIONS
TORQUE CONVERTERS
FLEX PLATES
CUSTOM TORQUE CONVERTER KITS
Transmission Specialties has the expertise to create custom torque converter kits tailored to your specific needs and performance goals. As the innovators of the spragless converter, TSI uses advanced engineering techniques and precision manufacturing to design and craft quality racing torque converters that optimize power transfer and overall performance. From single disc street converters, to triple disc lock-up race converters, and everything in-between, a custom torque converter from TSI will power you to the winners circle every time.
ABOUT TSI
For over 40 years Transmission Specialties has been a trusted name in the performance transmission industry, leading the way as pioneers of much of the technology that is now commonplace in the transmission and converter market. TSI takes pride in designing, engineering, and assembling all its products in the USA at its state-of-the-art Philadelphia, PA facility.
From race-ready Powerglide and Turbo 400 transmission kits, to complete torque converter’s, billet machined covers, aerospace quality input shafts, billet valve bodies and much more, TSI has everything you need to shift your race program to the next level.
The Advantages of Upgrading to a TSI Converter
If 90% of converter failures stem from a slipping or broken sprag, why include one in a racing conve…
The Truth About Spragless Converters For Racing
In today’s era of high-performance blowers, turbochargers, and multiple nitrous shots, the advantage…
CONNECT WITH US
Another one of our billet Powerglide transbrake valve bodies ready for shipment. This unit is one of our proprietary TSI-designed and engineered products, built entirely from scratch with ZERO OEM stock parts—100% brand new. Backed by over 40 years of continuous improvements and countless wins, this valve body is a proven performer on and off the track.
Check out all the specs at tsirace.com or give us a call at 610-485-9110
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They work well in a turbo PG Barra application
Kicking off 2025 with a custom-built Powerglide for a customer in need of a fresh unit. 💪 Precision, reliability, and ready to perform on and off the track! #powerglide #transmission #transmissionbuilder #raceready #racecar #dragracing #performanceparts #tsi #transmissionspecialties
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If you're pushing 2000HP and beyond through your Turbo 400, a standard 2.48:1 gearset often falls short. That’s where the 2.10 Turbo 400 Gearset comes in—a purpose-built solution for high-horsepower vehicles that demand better traction and performance off the line ➡ www.tsirace.com/product/transmission-parts/turbo-400-straight-cut-billet-2-10-gear-set/
Here's what sets it apart:
⚙ Optimized Traction: 2.10:1 first gear reduces wheel spin and improves 60' times.
⚙ Versatile Power Delivery: Optional 1.40:1 second gear launch for turbo builds with extreme horsepower.
⚙ Built for Durability: Billet aluminum and 8620 forged steel construction with high-performance bushings and Torrington bearings.
⚙ Perfect for high-powered launches and smooth performance on the track.
It's time to upgrade ➡⏰
#turbo400 #TH400 #streetoutlaws #streetcar #dragcar #transmission #noprepracing #chevrolet #NHRA #bigtire #turbols #transbrake #racing #turbocar
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TSI is here at PRI 💪 Come to booth 925 to get up close and personal with some of our best performing products.
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Are you coming to the #PRI show? Come see us at booth 925 tomorrow through Saturday for all our latest in transmission performance and ask about our show special!
#prishow #tsi #transmissionspecialties
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We've been putting in work to get your transmissions and torque converters out the door! This is the FINAL weekend to save during our extended sale at TSIrace.com. 5% + Free shipping + Free swag. Get your orders in before the holidays sneak up on you.
#transmissionspecialties #tsirace #powerglide #th400 #4l80e #torqueconverters
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Good stuff
Don't forget! It's officially Black Friday and you can save 5% + Free Shipping at TSIrace.com
#transmissionspecialties #torqueconverter #powerglide #th400 #4l80e
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Happy Thanksgiving from our family to yours! A big shoutout to our team and customers this Thanksgiving. We couldn’t do what we do without you. Enjoy the holiday, and thank you for being part of the TSI journey 🏁
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Ready for that new transmission, torque converter, or anything else for your trans build? Now's the time, because Black Friday is LIVE! Save 5% on EVERYTHING sitewide at www.tsirace.com/ , plus get free shipping/freight. Those savings add up quick, especially on complete transmissions like our new 4L80E!
#transmission #torqueconverter #flexplate #4l80e #powerglide #turbo400 #tsi #tsirace #transmissionspecialties
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It's a busy morning in the TSI machine shop ⚙️ We only use the best components in our torque converters and transmission builds—even if that means having to make the parts ourselves in-house!
#tsi #transmissionspecialtiesinc #torqueconverter #transmission #cncmachined #custommade #usa
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The TSI team had a great time last week displaying at the Powertrain Expo/AAPEX show. If you missed us or are planning on attending the PRI show in a few weeks, catch us there at booth 925!
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ARENT YOU THE SAME PEOPLE THAT MAKE ALL OF JEGS CONVERTER..????
Another round of our SFI rated racing Flexplates just hit the shelves! Available for popular Diesel and Automotive racing applications including Chevrolet/GMC Duramax 6.6L, Ford Powerstroke 6.7L, GM LS Series, Small Block/Big Block Chevy & Ford, and more!
We have several of these in-stock and ready to ship today! 🛒 tsirace.com or 📱 610-485-9110
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🚨 TSI 4L80E's NOW AVAILABLE 🚨
The ultimate high-performance transmission upgrade for your hot rod, LS swap, or any other retrofit application! These units are completely rebuilt using the best products available and are designed to hold up to 750HP.
✅ Billet 300M Input Shaft
✅Billet Forward Clutch Hub
✅ Dual Feed Direct Clutch Upgrade
✅ Alto Red Eagle Frictions
✅ New Wiring Harness, Speed Sensors and Solenoids
& More!
Available for order today at www.tsirace.com/product/complete-transmissions/4l80e-high-performance-750hp-transmission-2wd/ ✅
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Another busy morning here in the TSI converter shop 🔩 With over 35 years of experience in building high-performance torque converters, our team has the expertise to build a torque converter kit tailored to your specific needs and performance goals.
Get the perfect converter for your build spec'd out at tsirace.com or 610-485-9110
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Check out the all-new tsirace.com! You can now order everything from complete transmissions and torque converter kits to planetaries, billet/300M shafts, rebuild kits, cases, pans, and more—all available online!
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Stators ??? for bolt togethers ?
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