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  1. NickTransmissions

    4L60/700r4 delayed engagement in cold weather

    Didnt see a hyperlink embedded but will say that as long as the top end of it's PSI scale is 300PSI it should work fine. Start at idle in Park, Rev, Drive, D3, D2 and D1 w/foot on brake - see what your base idle pressures are and go from there. You should see immediate line pressure when in park...
  2. NickTransmissions

    4L60/700r4 delayed engagement in cold weather

    Consider doing is a line pressure test to confirm/deny your pressures are within acceptable ranges for each gear position. I’d do that first when cold then do it again when at op temp (be careful) to see what the readings are at idle, min TV and full TV - let us know what you observe.
  3. NickTransmissions

    4L80E Information Thread

    Easy if you have the equipment to do it: 4L80E Valve Body Vacuum Testing - Smoked Jasper Unit Follow Up
  4. NickTransmissions

    4L80E Information Thread

    Component Slipping codes are almost always torque converter-related in 4L80Es which, given your lack of noticable drivability symptoms points to valves in the valve body and/or pump: 1. TCC regulator valve (valve body) - output spool-bore is often worn and if yours is pulling single digit Hg...
  5. NickTransmissions

    Th400 deep pan and refresh?

    If you plan on rebuilding the unit, check out my TH400 thread if you haven't already - there's tons of info available covering all aspects of servicing and overhauling these transmissions: https://www.gmsquarebody.com/threads/th400-information-thread.41541/ I have an entire play list on Youtube...
  6. NickTransmissions

    700R4 Information Thread

    You can but your 1985 unit was designed to use a drum with a 2mm forward feed orifice in the forward drum. The 87+ 700s and 4L60Es all have drums with 6mm orifices as they were designed to work with a forward accumulator circuit. So your engagement into drive would be particularly harsh...
  7. NickTransmissions

    700R4 Information Thread

    Bumping up the thread with a tear down of another half-assed 700r4 rebuild…I walk through all the issues with the previous builder’s work as well as cover inspection point and considerations for assembly… 700R4 Tear Down - Friday Afternoon Special Enjoy and thank you in advance for watching!
  8. NickTransmissions

    700R4 Information Thread

    Assuming you haven’t resolved or figured out the issue, check engine vacuum as well as the switches and harness on the valve body, assuming you are not using the mechanical TCC control valve train in the VB with the harness unplugged. If you are using the mechanical TCC control valve train in...
  9. NickTransmissions

    TH400 build

    Extreme Automatics also sells similar parts, good quality; Chris and Steve are great to work with, if you haven't already contacted them.
  10. NickTransmissions

    TH400 build

    Have you ordered but not yet received a shipping notice, anything from CK Performance?
  11. NickTransmissions

    4L60E Information Thread (Includes 4L65/70/75)

    Bumping up the thread with a tear down and inspection of a crazy and piss-poor rebuild job done by some other shop here in town only six months ago from now...Was a total disaster, lol!
  12. NickTransmissions

    TH400 build

    It's not necessary to keep beating this horse to death. Frankly nothing that is not directly related to your build and requirements matters. If there is one thing I continuously see in DIY or novice builders, it's unwarranted fixation on something not deserving of that person's energy or...
  13. NickTransmissions

    TH400 build

    Not from my point of view. As I said, you have to make the right calls and decisions for your build based on your requirements. I also appreciate you watching my videos; thank you for the support on YT.
  14. NickTransmissions

    TH400 build

    Evidence? From whom? Speaking to my own personal experience, I have never built a TH400 where I did just a bolt-on SFI bell housing. I have only done them with Reid Case, Ext Housing and Bell together. And only three that I have ever built were like that. 99.999999% of the time you don't need...
  15. NickTransmissions

    TH400 build

    You should be covered. Agree - I've built god knows how many TH350s and 400s and never had any issues w/the bells breaking unless there was something seriously wrong with the rest of the vehicle, structurally or otherwise. I will propose Reid cases and bells for racing apps in excess of a 1000...
  16. NickTransmissions

    TH400 build

    I’d have a few different A518 fwd clutch snap rings on hand. Hardly ever been a build where I didn’t have to swap different thickness of that snap ring to dial in my int clutch. High rpm/racing units get more clearance than otherwise…
  17. NickTransmissions

    TH400 build

    Good luck with the rebuild - check out my TH400 information thread and Youtube playlist on these units and tag me in posts if you need any help. https://www.youtube.com/playlist?list=PLMqgQ_reThtLJPRaV0iXcYkfDgYj2QBec
  18. NickTransmissions

    Another 700R4 question

    Likely 3-4 clutch pack going out. Falling out of 4th is a common initial symptom. Falling out of TCC lock up is a different story and it’s usually caused by failing TCC solenoid but pump, valve body or converter are also suspects.
  19. NickTransmissions

    Th350 not shifting

    Start a separate thread with your transmission's symptoms and relevant history - you will get a much better response.
  20. NickTransmissions

    Th400 wont go into 3rd

    Not sure if you have already identified the cause but based on a quick review of the thread, I going to suspect your direct clutch pack is shot. Drop the pan and see if there's any burnt clutch material at the bottom...If so, yank it for overhaul...Install a 4L80E direct drum w/34 element HD...
  21. NickTransmissions

    700R4 no engagement any gear, ATF over-full

    Either way it almost certainly has to come out based on the symptoms as described. Pump will also need machine work as it's likely scored up; they all are. If you own a 700r4, you absolutely need a transmission pressure gauge to conduct pressure testing. Not getting the TV cable adjustment...
  22. NickTransmissions

    700R4 no engagement any gear, ATF over-full

    Likely pump failure. Do a line pressure test to confirm or deny or simply un-do one of the cooler lines, route it into a bucket and see if the pump is moving fluid. If no fluid flow or pressure, yank it for overhaul and send the pump castings out for machine work.
  23. NickTransmissions

    Rebuilt 700r4 lost reverse

    Hi Keith, one liter low may or may not have burnt the low reverse and/or reverse input clutch pack but I have my doubts as I've owned several vehicles over the years equipped with 700r4s and 4L60Es and have, on occasion, been that low with no discernable impact to any of the applied elements...
  24. NickTransmissions

    4L60E Information Thread (Includes 4L65/70/75)

    The HD2 kit is the best out of the box kit for those units however the entire transmission must be apart to really get your money's worth out of it. For those just looking to clean up shifts as well as install some corrective parts, the Transgo SK4L60E is perfectly fine. Unless you're making...
  25. NickTransmissions

    4L60E Information Thread (Includes 4L65/70/75)

    The HD2-3 shift valve converts the 4L60E's Drive 3 strategy and application schema to that of a 700r4...The 700r4 has the overrun clutch pack come on in 1st gear and stay on until you manually upshift into OD whenever you put the shifter into Drive 3 to start. The 4L60E changed such that the...

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