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  1. NickTransmissions

    transmission id number 17-cl-43491

    Are you using "talk to text"? As far as the numbers are concerned, one represents the year while the other is a serial. Please quote this post when you reply otherwise i wont be notified.
  2. NickTransmissions

    transmission id number 17-cl-43491

    If the two big letters on the ID tag are CL that's a TH400 out of a GMC school bus from 1973 or a TH475 from 74-80; The TH475 is identical in appaearance to a TH400 however has straight cut gear sets and, I believe, a heavy duty direct clutch pack (6 frictions) in the drum. Highly sought after...
  3. NickTransmissions

    TH400 drive off and shift problems/weird acting

    Good callout on the line and cooler flushing - both must be flushed before reinstalling the trans after overhaul. I always advise doing burnouts in manual low to ensure you have as many applied elements involved to spread the stress out so no one clutch pack or band suffers.
  4. NickTransmissions

    TH400 drive off and shift problems/weird acting

    How many miles on the trans? Any recent work done to it? Delayed engagements, "hunting" usually indicates burnt clutch packs...Sounds like it needs an overhaul. First check fluid level if you haven't already and smell it. If it smells burnt, drop the pan to see what's at the bottom. Lots of...
  5. NickTransmissions

    Is there a single prong Lock up switch?

    Nope, that's the vacuum modulator. Not a solenoid. Your pan looks like this? This is a TH350 Pan. This is a TH400 Pan I'm 100% positive those pictures show a TH400.
  6. NickTransmissions

    What transmission do I have?

    You're welcome, walleye. Can't think of anything other than what I've already listed above. Start with the cable adjustment and pressure test. If it passes, take on a road test to see what happens. If you still habe no 3-4 upshift, its either governor (not likely but possible), valve body or...
  7. NickTransmissions

    What transmission do I have?

    No 3-4 upshift is somewhat common on earlier 700r4s w/first design valve bodies. Several times I have had to swap the vb two or three times before Id get one that fully works. That said, a few common causes: 1) Worn 3-4 upshift valve 2) 3-4 Relay valve installed backwards 3) TV cable slightly...
  8. NickTransmissions

    Torque Converter Recommendation

    If Blueprint is recommending a 2200-2400 stall, why are you questioning that?
  9. NickTransmissions

    What transmission do I have?

    No upshift (you remain in third gear) or does it shift and you feel like its in neutral?
  10. NickTransmissions

    Cracks in transmission by output shaft

    Not cracks; just normal byproduct of the casting process.
  11. NickTransmissions

    TH400 (2WD): New tail shaft bushings are too tight. Why??

    It will be fine...I have to sand TH400 and 4L80E sun gear shaft bushings all the time. Its very common as aftermarket bushings are sometimes a little tight relative to factory when installed. As long as you didnt take too much off, it will be good to go. Your durabond bushing may have gone in...
  12. NickTransmissions

    Turbo 350 3rd gear/reverse issues.

    Hey man welcome to the forum! Unfortunately, it's time for an overhaul so need to pull it and throw it on the bench for teardown and inspection. I have a TH350 Info thread you can refer to for video instructions, parts, mods and other info. Main pointers: - Install a heavy duty intermediate...
  13. NickTransmissions

    Is there a single prong Lock up switch?

    Hi Dan, The small wire going to the transmission's case connector is for the detent solenoid. Th400s dont use a purely mechanical kick down system like the TH350; the detent system is "electro-hydraulic" in that it uses a solenoid to perform the same function as a kick down cable and...
  14. NickTransmissions

    700R4 Information Thread

    I don't get deep into the weeds with the wiring beyond simply installing the harness. However your transmission shouldn't have anything electrical going to the transmission as your transmission's valve body has a mechanical TCC command valve train installed from the factory. All 82-E87 700R4s...
  15. NickTransmissions

    700R4 Information Thread

    Very soon - going to be holding a drawing for autographed, advance limited edition copies for a few lucky winners!
  16. NickTransmissions

    700R4 Information Thread

    You're welcome. Yep, putting the correct housing and gear set w/a new o-ring should solve those problems for you. Regarding the yoke, I must have misunderstood...Can't really speak to that one way or another because I don't get involved in the transmission's removal/reinstallation and can't say...
  17. NickTransmissions

    700R4 Information Thread

    Speedo housings vary based on drive/driven gear tooth count combinations; there's two that I'm aware of: one for 34-39 tooth driven gears and one for 40-45 tooth driven gears. Not sure whether welding or not would cause issues but I'm inclined to think not assuming the weld was done properly...
  18. NickTransmissions

    700R4 Information Thread

    I like Raybestos Blue Plates for full race; I don't use the Alto Reds too much. Either Alto's or Borg Warner's high energy max pack/power pack modules will work nicely in a street/strip application.
  19. NickTransmissions

    700R4 Information Thread

    Good question - hopefully someone else can chime in as I don't do anything with the vehicles themselves, my work is entirely bench/carry out but I would imagine any brake or similar switch could work for what you're trying to accomplish. But that's really just a guess at this point.
  20. NickTransmissions

    C10 frame swap 4x4 4l60e?

    You can use the 96-97 4L60e with the 2002 computer, it will control it just fine. Look for a 97 as opposed to a 96...1997+ 4L60Es came with much better forward drum bonded steel and rubber apply piston compared to 96 and back that had the aluminum pistons for the forward and coast clutch and...
  21. NickTransmissions

    700R4 Information Thread

    Looks like a pre-auxiliary valve body unit. Ask them if they installed a mechanical lock up kit in the valve body. If they didn't and it still has the two aluminum slugs installed in the TCC control valve bore location, as many of those came from the factory, you can install a Transgo or...
  22. NickTransmissions

    700R4 Information Thread

    Follow these instructions once you have filled the trans to capacity (700r4 w/stock pan should take 10-11.5 quarts, not counting cooler capacity). Look at the first digit of the number stamped into the case on the rear passenger side of the trans, right above the pan and let me know what it...
  23. NickTransmissions

    700R4 Information Thread

    I'd love to sample what whoever gave you that advice about the converter is smoking...unlike the TH350C, the 700R4 must have a functioning tcc lock up mechanism or a tcc non-lock up conversion kit installed. What year is your 700R4? What TCC lock up kit did you purchase (if any)? 82-87 had...
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