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Series Explained7 Inch8 Inch9 / 10 / 11 inchPro-X
Pro-X
TCI® Drag Race Torque Converters

Pro-X

  • Hand-Built Steel Stator
  • Forged Mounting Cover
  • 3 Sets of Heavy-Duty Internal Bearings
  • Furnaced-Brazed Turbine & Pump Assembly
  • Built for GM, Ford and Chrysler Transmissions; Six or Four-Bolt Flanges & Optional Billet Front Available

TCI Pro-X Race Converters

TCI® offers a complete line of torque converters built exclusively for six-second nitrous engines. All of these converters incorporate hand-fabricated steel stators, oversize bearings, races and anti-balloon plates. They are well-suited for 500-plus cubic inch engines with multiple-stage nitrous or supercharged induction.

Applications/GroupsChryslerGMFordLenco
Group Description/ Application Stall Range (RPM) Vehicle Weight (lbs.) Engine CID 600-900 horsepower Estimated Horsepower Nitrous Rear Gear Tire Size Fuel CFM Engine RPM Range
1 Heavy vehicles, high-torque, big block (Top Sportsman & Outlaw Street Car classes) Approx. 5500-6200 2800-3200 BB 565-705 cid or SB with blower or turbocharger 1000-1200 300-500, single, dual or progressive horsepower stages 4.30 to 4.88 31" to 33"  1050 to 1300 6500-8000
2 Heavy vehicles, high-torque, big block (Top Sportsman & Outlaw Street Car classes) Approx. 5200-5900 2800-3200 BB 565-705 cid or SB with blower or turbocharger 1000-1200 300-500, single, dual or progressive horsepower stages 4.30 to 4.88 31" to 33"  1050 to 1300 6500-8000
3 Light vehicles, high-torque, big block (Quick 8, Top Dragster classes) Approx. 4800-5500 1600-2500 BB 570-705 cid or SB with blower or turbocharger 1200-1500 300-500, single, dual or progressive horsepower stages 3.90 to 4.56 32.5" to 34" 1150 to 2400 6500-8500
4 Light vehicles, high-torque, big block (Quick 8, Top Dragster classes) Approx. 4700-5400 1600-2500 BB 605-800 cid or SB with blower or turbocharger 1400-1700 300-500, single, dual or progressive horsepower stages 3.90 to 4.56 32.5" to 34" 1150 to 2400 6500-8000
5 Heavy vehicles, high-torque, big block (Top Sportsman & Outlaw Street Car classes) Approx. 4400-5100 2800-3200 BB 570-705 cid or SB with blower or turbocharger 1200-1400 300-500, single, dual or progressive horsepower stages 4.30 to 4.88 31" to 33"  1150 to 2400  6500-8000
6 Heavy vehicles, high-torque, big block (Top Sportsman & Outlaw Street Car classes) Approx. 3800-4500 2500-3200 BB 570-800 cid or SB with blower or turbocharger 1500-1800 300-500, single, dual or progressive horsepower stages 4.30 to 4.88 31" to 33" 1150 to 2600  6500-8000
7 Heavy vehicles, high-torque, big block (Top Sportsman & Outlaw Street Car classes) Approx. 4800-5800 2500-3200 BB 540-615 cid or SB with blower or turbocharger 1500-1800 300-single horsepower stages 4.30 to 4.88 31" to 33" 1150 to 2600  6500-8000
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