Page 490 - 2018 Master Catalog

FULL MANUAL VALVE BODIES

The competition valve body was designed for maximum performance and quick
elapsed times in racing applications. By controlling the valve body only through
manual means, quicker shift timing and the ability to run higher line pressures than
possible with an automatic shift transmission are achieved. Higher line pressure
makes it more difficult for clutches to slip under high loads.
PART NO. MAKE DESCRIPTION

121700 Chrysler 1967-79 Torqueflite 727 & 904, Reverse Shift Pattern
521000 Ford 1970-82 C4, Reverse Shift Pattern
421000 Ford 1967-91 C6, Reverse Shift Pattern
744200 GM Powerglide, All Aluminum Case, Forward Shift Pattern
321000 GM TH350, All Non Lock-Up, Forward Shift Pattern
321001 GM TH350, All Non Lock-Up, Forward Shift Pattern; Retains 1st & 2nd
321100 GM TH350, All Non Lock-Up, Reverse Shift Pattern
321115 GM TH350, All Non Lock-Up, Reverse Shift Pattern; Retains 1st & 2nd
221100 GM 1965-91 TH400, Reverse Shift Pattern
221200 GM 1965-91 TH400, Forward Shift Pattern
221201 GM 1965-91 TH400, Reverse Shift Pattern; Retains Lock-Up Capability
386010 GM 2004R, All, Reverse Shift Pattern
376010 GM 700R4, All, Reverse Shift Pattern
376015 GM 700R4, All, Reverse Shift Pattern w/ Full Engine Braking

TRANSBRAKE VALVE BODIES
• Transbrake action prevents torque load transmis-
sion through drivetrain before launch
• Vehicle will not be able to roll forward or backward
• Power is immediately transferred to rear tires, very
similar to a manual clutch

PART NO. MAKE DESCRIPTION SHIFT PATTERN MATERIAL
121900 Chrysler Torqueflite 727 & 904 Pro Tree Transbrake Kit P-R-N-1-2-3 Cast Iron
121901 Chrysler Torqueflite 727 & 904 COMP Transbrake Kit P-R-1-2-3-N (Safe Neutral) Cast Iron
521500 Ford 1970-82 C4 Transbrake Kit P-R-N-1-2-3 Aluminum
421500 Ford 1969-91 C6 Click-Style Detent Transbrake Kit P-R-N-1-2-3 Aluminum
451501 Ford 1970-91 C6 Slide Detent Transbrake Kit P-R-N-1-2-3 Aluminum
748200 GM Powerglide Bracket Transbrake Kit P-R-N-2-1 Cast Iron
628200 GM Powerglide Pro Tree Transbrake Kit P-R-N-2-1 (Safe Neutral) Cast Iron
628251 GM Powerglide Pro Tree Stage 2 Transbrake Kit P-R-N-2-1 (Safe Neutral) Cast Iron
321500 GM TH350 Transbrake Kit, All P-R-N-1-2-3 Cast Iron
221500 GM 1965-91 TH400 Transbrake Kit P-R-N-1-2-3 Cast Iron
274500 GM 1991-96 4L80E Transbrake Valve Body Kit P-R-N-1-2-3-OD (Full Manual) Aluminum
274501 GM 1997-06 4L80E Transbrake Valve Body Kit P-R-N-1-2-3-OD (Full Manual) Aluminum

TRANSBRAKE SOLENOIDS
• Precision-ground steel shaft with bronze bush-
ing, shaft-pinned nut and unique lip seal prevent
fluid leakage while minimizing drag REPLACEMENT
• Shaft-pinned nut for secure placement SPRINGS
PART NO. DESCRIPTION PART NO. DESCRIPTION

521300 Ford C4 External transbrake solenoid 628216 Piston springs for Powerglide reverse
749800 Powerglide transbrake solenoid w/ .200” stroke 704300 Pressure regulator spring for Powerglide
221301 TH350 transbrake solenoid w/ .250” stroke 221600 Direct springs for TH400 high gear
221300 TH400 transbrake solenoid w/ .200” stroke 224300 Pressure regulator spring for TH400

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