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

8 Inch

  • 8" Steel Ballooning Plate
  • Forged Steel Front
  • 3 Sets of Torrington Bearings
  • Furnace-Brazed Fins
  • High Load Sprag
  • Cast Steel Stator Where Applicable

Our best-selling race torque converter. Suitable for the greatest percentage of drag cars, TCI® 8" converters win races in classes from bracket racing and Super Gas to Sand Dragging and Stock Eliminator. We continually work to refine the dependability and consistency in these converters to give you a better unit. Most of our models now feature a cast steel stator supported by an oversize caged bearing for added reliability. Current models also feature an improved housing design for less flex or ballooning under the stress of racing, resulting in more consistent elapsed times, faster reaction times and better durability.

Applications/GroupsAMCChryslerGMFord
Group  Description/Application  Stall Range (RPM) Vehicle Weight (lbs.) Engine CID 550-600 HP Rear Gear Tire Size Fuel CFM Engine RPM Range
1 Light & Heavy Vehicles, Low RPM, High-Torque, Big Block (Brackets, 10.90, 9.90, 8.90) 4500-5000 2500-3200 BB 427-482 cid  4.88 to 5.57 30" to 32"  750 to 1050 6000-7000
2 Excellent for Stock & Super Stock Cars, Keeps Engine RPM from Falling Down on Gear Change Small Block= 4400-4800 2500-3200 SB 327-400 cid 4.88 to 5.38 30" to 32"  750 to 1050 6000-7000
    Big Block= 4800-5300 2500-3200 BB 380-430 cid 4.88 to 5.57      
3 High Stall Converter Group, Good for Dragsters and Full Bodied Bracket Cars Turning Higher RPM 5600-6400 1500-2500 SB 327-400 cid 4.88 to 6.00 29" to 32" 750 to 1050 6000-8500
4 Excellent for Big Block Brackets, Super Street & Super Gas. Good Top End Horsepower, MPH & Reaction 5000-5400 2400-3200 SB/BB 400-485 cid 4.30 & up 28" & up 750 to 1050 6000-8500
5 Easier to Hook Up Than Most Converters of Same Stall. Full Bodied Cars w/ Small Block Using Mid-Range Torque 5400-5900 2100 & up SB 340-383 cid 5.13 to 6.50 29" to 32"  750 to 1050  6500-8000
6 Average to Heavy Small Block Bracket, 10.90 & 9.90; Higher RPM, Good Reaction & Hard Leaves 5400-6000 2500 & up SB 327-400 cid 5.38 to 6.50 28" to 32" 750 to 1050  6500-8000
7 High stall & quick reactions. The 'Super Class' converter. Ideal 10.90, 9.90 & 8.90 with engines producing good low & mid-range torque Small Block= 5200-5800 2100-2800 SB 340-400 cid 4.30 to 5.13 30" to 32" 750 to 1050 6500-8000
    Big Block= 5500-6200 2100-2800 BB 400-485 cid        
8 Light & Heavy vehicles. Low RPM, high-torque, big block (brackets, 10.90, 9.90 & 8.90) 4900-5400 2500-3200 BB 427-482 cid 4.88 to  5.57 30" to 32" 750 to 1050 6000-7000
9 Light & Heavy vehicles. Low RPM, high-torque, big block (brackets, 10.90, 9.90 & 8.90) 4200-4900 2500-3200 BB 427-482 cid 4.88 to  5.57 30" to 32" 750 to 1050 6000-7000
10 Excellent for Stock & Super Stock applications; keeps engine RPM from falling down on gear change Small Block= 4000-4500 2500-3200 SB 327-400 cid 4.88 to  5.38 30" to 32" 750 to 1050 6000-7000
    Big Block=4400-4900 2500-3200 BB 380-430 cid 4.88 to  5.57      
11 Excellent for Stock & Super Stock applications; keeps engine RPM from falling down on gear change Small Block= 4800-5300 2500-3200 SB 327-400 cid 4.88 to  5.38 30" to 32" 750 to 1050 6000-7000
    Big Block=5200-5700 2500-3200 BB 380-430 cid 4.88 to  5.57      
12 Excellent for Stock & Super Stock applications; keeps engine RPM from falling down on gear change Small Block= 5200-5700 2500-3200 SB 327-400 cid 4.88 to  5.38 30" to 32" 750 to 1050 6000-7000
    Big Block=5600-6100 2500-3200 BB 380-430 cid 4.88 to  5.57      
13 Light & heavy vehicles, small block 5400-6000 2500-3200 SB 277-340 cid 5.13 to 6.50 30" to 32" 750 to 1050 7500-8500
14 Light & heavy vehicles, small block 5800-6300 2500-3200 SB 277-340 cid 5.13 to 6.50 30" to 32" 750 to 1050 7500-8500
15 Light & heavy vehicles, big block 5400-6000 2500-3200 BB 522-580 cid 4.30 to 5.57 30" to 34" 1050 to 1500 7000-8000
16 Light & heavy vehicles, big block 5800-6300 2500-3200 BB 522-580 cid 4.30 to 5.57 30" to 34" 1050 to 1500 7000-
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