Joaquin P
OBS Enthusiast
Okay so I’m back with more tranny woes. I decided to take one of the spare 700r4s I have laying around and got it rebuilt by a guy who came recommended to me by a friend. Heres the stuff he replaced and put in there.
All High Energy frictions
8 Stack 3-4 clutch pack
BW High energy band
Corvette Servo
Hardened Sunshell
I also got a new torque converter to go along with it. So I swap I out the transmission, button everything back up, and fill it to where it needs to be (while hot in idle of course).
I set the tv cable as best as I could by looking up videos and pictures. I even put a corrector bracket for my EDELBROCK carb so that the throw is “correct” although I suspect the geometry is still an issue for me.
It shifts fine through the first three gears, and I believe the converter is also locking up because if I switch from OD to D I feel it tug the truck back, but I definitely know it isn’t in OD because I was doing 65 @~2600 rpm
I’m at a loss tbh, any help would be appreciated.
I’ve looked into getting the TV made EZ kit by bow tie overdrives just to eliminate the geometry as a possible culprit as well, so if anyone has this kit I would appreciate some feedback on your experience with it.
Sent from my iPhone using Tapatalk
All High Energy frictions
8 Stack 3-4 clutch pack
BW High energy band
Corvette Servo
Hardened Sunshell
I also got a new torque converter to go along with it. So I swap I out the transmission, button everything back up, and fill it to where it needs to be (while hot in idle of course).
I set the tv cable as best as I could by looking up videos and pictures. I even put a corrector bracket for my EDELBROCK carb so that the throw is “correct” although I suspect the geometry is still an issue for me.
It shifts fine through the first three gears, and I believe the converter is also locking up because if I switch from OD to D I feel it tug the truck back, but I definitely know it isn’t in OD because I was doing 65 @~2600 rpm
I’m at a loss tbh, any help would be appreciated.
I’ve looked into getting the TV made EZ kit by bow tie overdrives just to eliminate the geometry as a possible culprit as well, so if anyone has this kit I would appreciate some feedback on your experience with it.
Sent from my iPhone using Tapatalk
. The ECM doesn't tell the 700R4 when to shift into OD. The brake pedal switch will unlock the TCC, not prevent it from going into OD. The trans tells the ECM when it's in Drive (1st,2nd,3rd) or OD (4th) through a switch. The only thing from the ECM that tells the trans what to do is lock the TCC. Here's some light reading, ha ha. Go to page 46 (or 48/100), 3-4 Shift Valve Train. Maybe your governor isn't working right (plugged ports or stuck spool), if the TV cable is adjusted properly and you're getting enough pressure? 
