Complete 200-4R Overdrive Conversion Packages

Converting a TH350, TH400, Powerglide or other classic GM automatic to overdrive? Twisted Torque 200-4R conversion packages combine the transmission, torque converter, TV cable and geometry components, cooler and major installation parts needed for the swap.

Choose from Street, Pro, Punisher and Executioner packages rated from 350 HP through 850 HP.

200-4R Conversion Packages Built for the Complete Swap

A 200-4R conversion is more than installing an overdrive transmission. Correct TV cable geometry, converter selection, cooling, mounting, speedometer setup and driveline fitment all need to be addressed during the swap.

What's Included in a Twisted Torque 200-4R Conversion Package?

Package contents vary by build and application, but our 200-4R conversion packages include the transmission, application-matched torque converter, GM TV cable, Edelbrock or Holley carburetor geometry correction components when required, transmission mount, dust cover, dipstick and tube, throttle cable bracket, torque converter bolts, speedometer gear package, Hayden 1402 transmission cooler and two cans of Cooler Kleen flush.

Street, Pro and Punisher packages also include the required lock-up wiring components. The 850 HP Executioner is a non-lockup build and does not require a lock-up wiring kit.

Choose Your 200-4R Conversion Package

Twisted Street™ | 350-450 HP

Stock-based upgraded 200-4R with premium frictions, mild TransGo or Superior shift correction package and a new 1650 RPM stock-stall lock-up converter.

Twisted Pro™ | 500-550 HP

Performance street build with increased clutch capacity, dual-fed direct, 3-clutch overdrive conversion, TransGo HD2-A calibration, performance pump setup and a new 1800-2100 RPM lock-up converter.

Twisted Punisher™ | Up to 650 HP

Billet forward drum and shaft, 7-clutch dual-fed direct, 3-clutch overdrive, Sonnax Super Hold servo, .500 TV boost setup, upgraded pump and one-way components, deep-sump cast aluminum pan and a new 2300-2500 RPM performance lock-up converter.

Twisted Executioner™ | Up to 850 HP

Our top-level 200-4R with 300M billet input shaft, billet forward drum and shaft, upgraded overdrive hard parts and planetaries, 7-clutch dual-fed direct, expanded internal rollerization, .500 boost setup and deep-sump cast aluminum pan.

Executioner is NON-LOCKUP ONLY and includes a new 2500-2800 RPM non-lockup performance torque converter.

200-4R Gear Ratios

1st: 2.74 | 2nd: 1.57 | 3rd: 1.00 | 4th: 0.67 Overdrive

Before Ordering a 200-4R Conversion Package

Have your vehicle year, make and model, engine combination, estimated horsepower, rear gear ratio, rear tire size, carburetor or EFI setup and intended use ready. Higher-level builds may also require vehicle weight, camshaft/RPM range and desired WOT shift point.

TV cable geometry and adjustment are critical on every 200-4R installation. The TV cable is not simply a kickdown cable and must be correctly matched and adjusted for the throttle setup.