Author Topic: 700R4 or 200-4R torque converter lockup  (Read 417 times)

silver78

  • Oracle Forum Member
  • *
  • Posts: 3491
700R4 or 200-4R torque converter lockup
« on: January 07, 2022, 11:24:41 AM »
Swapping in an overdrive trans?  check out this older article I saved.  I believe some of the GM parts are no longer available but if you have an old GM vehicle sitting around you may have them already. 
MY BUILD THREAD:  http://transamcountry.com/community/index.php?topic=41850.0

Previous builds:
65 Galaxie sold
67 camaro RS sold
68 camaro RS sold
69 camaro sold
72 Nova SS
81 T/A 4 spd sold
86 IROC sold
88 Formula 350 sold
92 Z-28 sold
93 9C1 Caprice sold
94 Impala SS sold

Wallington

  • Oracle Forum Member
  • *
  • Posts: 1168
Re: 700R4 or 200-4R torque converter lockup
« Reply #1 on: January 07, 2022, 08:56:46 PM »
I've had that GM lock-up delay valve on my parts list for years, never seen one for sale, or the alternatives. I have one that looks the same from B&M or Painless, not sure how they compare but articles seem to ignore them and reference the GM version (Delco 214-479, Standard DSV-31)
« Last Edit: January 07, 2022, 09:05:24 PM by Wallington »

firebirdparts

  • Jedi Council
  • Oracle Forum Member
  • *
  • Posts: 19277
Re: 700R4 or 200-4R torque converter lockup
« Reply #2 on: January 10, 2022, 06:11:44 AM »
Interesting grounding through the brake lights.  The 200-4R's controls vary based on the original application, and I would bet some of them have an internally grounding switch which would require you ignore the brake lights or put in a relay to address that.  It's not entirely necessary in my opinion; if you stop, the TC will not let go until it drops out of 4th gear or possibly 3rd (the pressure switch) and that's okay.
I want to be like Paul Kenny when I grow up
Joe Bays
1977 Y82 4-speed (red interior)
1978 Skybird 350
1978 Redbird 305
1979 Redbird 301 4-speed
1992 Lincoln Mark VII LSC/SE (red)
1970 Datsun Pickup
1953 Chevy pickup (converted 4x4)
1988 T-bird Turbo Coupe

Wallington

  • Oracle Forum Member
  • *
  • Posts: 1168
Re: 700R4 or 200-4R torque converter lockup
« Reply #3 on: January 10, 2022, 08:59:57 PM »
Just like Cruise control, often wired through the brake pedal/lights to drop out.

firebirdparts

  • Jedi Council
  • Oracle Forum Member
  • *
  • Posts: 19277
Re: 700R4 or 200-4R torque converter lockup
« Reply #4 on: January 15, 2022, 04:04:21 PM »
Just like Cruise control, often wired through the brake pedal/lights to drop out.

I've never seen cruise wired to ground through the bulbs, but I admit though I rarely have any trouble with it on anything I own, it might be common.
I want to be like Paul Kenny when I grow up
Joe Bays
1977 Y82 4-speed (red interior)
1978 Skybird 350
1978 Redbird 305
1979 Redbird 301 4-speed
1992 Lincoln Mark VII LSC/SE (red)
1970 Datsun Pickup
1953 Chevy pickup (converted 4x4)
1988 T-bird Turbo Coupe

Re: 700R4 or 200-4R torque converter lockup
« Reply #4 on: January 15, 2022, 04:04:21 PM »