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Street Fighter 4R70W Lockup Torque Converter (96-04 GT, V6)

AmericanMuscle no longer carries the Street Fighter 4R70W Lockup Torque Converter (96-04 GT, V6). Please check out 1999-2004 Mustang Transmission Parts for an updated selection.

Features & Details

  • Great for Street and Strip
  • Lowers ET's
  • 3,000 RPM Stall
  • For Use with 4R70W Automatic Transmission
  • Fits 1996-2004 GT or V6 Mustangs
Great for Street and Strip. Featuring furnace-brazed fins, needle bearings, and flame-hardened pre-ground pump hub, this computer balanced TCI StreetFighter torque converter will increase torque multiplication, and efficiency making this a great torque converter for both street and strip applications.

3000 RPM Stall. Increasing the rpm stall speed of your Mustangs torque converter will result in the engine reaching the powerband earlier, providing quicker acceleration and lower elapsed times. This TCI Street Fighter Torque Converter is set to 3000 RPM, that is a 1500 increase over stock.

Application. This TCI Street Fighter Torque Converter is specifically designed for use on 1996 to 2004 high performance GT and V6 Mustangs with the 4R70W automatic transmission. Functional lock-up torque converter, only for lock-up transmissions.

Fitment: Details

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Torque converter
  • (4) Studs
  • (4) Nuts
Installation Info
Will it fit my Mustang?

    Customer Photos (1) Submit Your Photo

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      Questions & Answers (26)

      5 Top Rated Questions

      torque specs i am building my motor and trans up to handle to boost for a hellion twin turbo system . do you think this will help me spool up for a better launch at the line. thanks jesse

      • Definitely. I'm going this same route and have been doing a lot of research on the subject. A 3000 to 3500 stall with a turbo system is gonna be awesome!

      Helpful (5)

      Will this work with 4R75W transmissions in 2004 GT's? I know this works with 4R70W trannys but does it work with 4R75W trannys?

      • The TCI Street Fighter 4R70W Lockup Torque Converter will only work with AODE/4R70W with a 10.625" bolt pattern only.

      Helpful (3)

      Will this work with comp stage 2 cams and my factory transmission?

      • This would work perfectly with them! You will want to get a tune too.

      Helpful (2)

      Will this work on stock transmission?

      • Yes this can be used on stock 4R70W automatic transmissions.

      Helpful (0)

      will this work on a 2004 v6 mustang with the automatic transmission from the factory and what advantages will it give and will I have to make other adjustments

      Post Your Question
      10 More Questions
      Do I need a tune for it 1 answer
      Will this work with no cam and bolt ons and tune and 4.10 or 3.73 gears? 0 answer
      Will this torque converter work good with my 4.10 gears? #2003 mustang v6? 1 answer
      Is this good for daily driving to work 2-3 days a week? Setup is Mhs PI heads/stage 2.5 cams combo FBO 98 gt vert! 1 answer
      What's the bolt circle on this ? 1 answer
      Will this work for a 2001 v6? 1 answer
      Will this converter require a custom tune 1 answer
      Will this work with cams b303 and my factory transmission? 1 answer
      How bad did this converter affect your gas milage? Was worse or better? If so how much? 1 answer
      How much fuild it holds 1 answer

        Customer Reviews (6) Write a Review

        Overall Rating 4.7

        out of 5 stars

        Installation Time:Weekend

        Installation Cost:$250-$500

        • Performance Gain 4.833333 4.8
        • Fit 4.166667 4.2

        • 5/5

          Installation Time: Afternoon

          August 11, 2018

          Great product

          fast shipping, and exactly what i was looking for. really spools up my turbo faster.


          Year: 2000 Submodel: GT

          Helpful (2)

        • 4/5

          Installation Time: Afternoon

          April 18, 2018


          Works great, helped a lot, was not bad to install if you have the tools and a lift to put the car up on


          Year: 1998 Submodel: GT

          Helpful (4)

        • 5/5

          Installation Time: Afternoon

          October 10, 2017

          Great product

          This is a great addition for the car! It launches way harder!!!


          Year: 2000 Submodel: GT

          Helpful (3)

        • 4/5

          Installation Time: Shop Install

          Installation Cost: $100-$250

          November 23, 2016

          Daily Driver Stall Speed Change Review

          Converter Idles The Same As My Stock One Did Was Worried About The Change In Stall Speed That it was going to behave to crazy for a Daily driver But it behaves just like the stock one.I Approve Good For a Daily Driver.


          Year: 1998 Submodel: GT

          Helpful (8)

        • 5/5

          Installation Time: Shop Install

          Installation Cost: $250-$500

          December 19, 2014

          Improved 60' time!

          Great performance gain. Improved my 60' time by 4 tenths. Locks up good on the street. One pin was a little off at installation and had to be ground slightly at the shop. TCI could have had a little better quality control, but it hasn't been an issue. I would recommend this highly; between the convertor and 4.10 gears I took of almost a second in the 1/8th with drag radials!


          Year: 2000 Submodel: GT SC

          Helpful (10)

        • 5/5

          Installation Time: Shop Install

          Installation Cost: $500-$1000

          March 22, 2013

          TCI torque converter

          Great product. Hard to say about the performance gains due to me installing a TCI streetfighter transmission also. Great improvement over stock by far.


          Year: 2004 Submodel: GT Denham Springs, LA, USA

          Helpful (8)

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