Turbo Action 17255E Torqueflite 727, 904, 998 & 999 Electronic Valve Body (PRND21) - Manual

Part #17255E 5/27/04 Page #1
CHEETAH E-SHIFT Pro Series Valve Body
(Positively Not For Street Use)
Fits Torqueflite “727” & “904” 1966-90 (Non Lock-Up)
Part #17255E
PRND21 (PRN321) -Electronically Shifted
The Turbo Action CHEETAH Electronic Shift Pro Series Valve Body gives you the same clean
and positive shifts that you have come to expect from a CHEETAH Valve Body. In addition, you now
have automatic preset electronic upshifts for water burnouts, race shifts and pit road low rpm
shifts. Your runs will be more consistent than ever before and most probable you will go faster.
Low current solenoids with high reliability; produce quick positive shifts.
Note: This valve body has no engine braking in low gear!
Things that should be considered:
1. Deep Oil Pan Required w/proper pick-up (Must be single hole pick-up).
2. If “727”, suggest 12-15 #17090 springs for front clutch piston.
3. If “727” & “904”, suggest 3.8 Kickdown Lever or a 4.2.
4. If “904”, be sure that “904” transmission core is a 1971 or newer. Part Number
will be 35XXXXX or higher.
5. If “727”, use an early type kickdown (Front) servo if available. If not available, order
our new Billet Kickdown Servo #17342.
The following are the proper settings for your bands and clutches:
Front Band “727” & “904”: Adjust front band per the following specs - (a) Locate the adjust-
ment on the driver side on the outside of the transmission, just ahead of the linkage. (b) You will
need a 3/4” wrench and an open end 5/16” wrench. Break the locknut loose (3/4” nut). Now
holding
the locknut, turn the square lug in the center of the locknut with your 5/16” open end wrench. Turn
wrench clockwise until wrench becomes snug (10 in./lbs.). Make sure the locknut doesn’t move
while tightening the square lug. (c) Now carefully turn 5/16” wrench counterclockwise 1 1/2 turns.
Holding the 5/16” wrench, tighten the 3/4” wrench to 35 ft./lbs. (Very Tight). DO NOT allow the
square lug to move while tightening the 3/4” locknut.
Rear Band “727”: Tighten adjustment lug 10 in./lbs., back off 2 turns and tighten locknut.
Rear Band “904”: Tighten adjustment lug 10 in./lbs., back off 4 turns and tighten locknut.
1971 - UP CORES ONLY.
Front Clutch “727” & “904”: Four Clutches - Clearance = 0.050-0.060
Five Clutches - Clearance = 0.060-0.070
Rear Clutch “727” & “904”: Four Clutches - Clearance = 0.030-0.040
1535 Owens Road, Jacksonville, FL 32218 - (904)741-4850 - FAX (904)741-4853
www.turboaction.com