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  1. NickTransmissions

    TH400 Information Thread

    Then a quality build with a rollerized output thrust, Sonnax LB1-TH400 kit, feed orifices enlarged a tad per your preferences along with the usual stuff (clutch module, new seals, sealing rings, o-rings, etc plus detent solenoid) should be sufficient...I'd have him install 4L80E center support...
  2. NickTransmissions

    What have you done to your square lately??

    You're welcome, man - anytime...
  3. NickTransmissions

    TH400 Information Thread

    Install Alto high energy frictions, Sonnax TH400-LB1 boost valve kit, dual feed the direct clutch, drill the spacer plate per application, shift firmness preferences and converter stall. If pushing more than 500 hp, id also install a billet rollerized forward clutch hub. Rollerize the rear of...
  4. NickTransmissions

    Performance 700r4 rebuild

    Those rarely leak...try tapping it with a drift to reseat the check ball to see if it stops leaking...If not, replacement is easy as I'm sure you know.
  5. NickTransmissions

    Performance 700r4 rebuild

    @Wumbo - For some reason this website isn't letting me quote but the round hole rev input drums are obsolete so yea, was def a cost cutting measure...Not the end of the world, just odd to see in one of their transmissions...Also odd to see Z-pack as it's the one Raybestos product that is...
  6. NickTransmissions

    TH400 Information Thread

    You're welcome, @DoubleDingo.
  7. NickTransmissions

    700R4 Information Thread

    I think there's a diagram for the transmission's internal wiring harness in the 4L60 ATSG manual - I'll pull it down and take a photo to post in reply a little later today.
  8. NickTransmissions

    TH400 Information Thread

    You're welcome - the below video should address all of your questions and then some - it's of my TH475 build up but otherwise is identical to how I'd build yours, other than maybe dual feeding the direct clutch (I didn't do that in the video) but it's very easy. Hot tank the case and all...
  9. NickTransmissions

    TH400 Information Thread

    @DoubleDingo - Yank and overhaul the unit...Sounds like all of your applied elements are worn but will be important on tear down to determine if the wear is simply normal for the mileage and usage pattern or if there are other causes like hard part wear/damage...Inspect the lip seals, their...
  10. NickTransmissions

    Performance 700r4 rebuild

    Does it say on the sticker on the case, when Hughes built that thing? Using a round hole rev input drum when the third design square hole was available would have been odd. I'm curious as to what valve body, accumulator mods were performed. Is this an aux valve body trans (87-93)? Were there...
  11. NickTransmissions

    Performance 700r4 rebuild

    I see, looks good...none of all that was apparent in your prev post so figured i'd mention it, if you were just doing a refresh which is how I interpreted post #2... What are you doing for the 3-4 pack (dont say "Z-pack")?
  12. NickTransmissions

    Performance 700r4 rebuild

    Replace the pump bushings, if you're not going to replace all of them. I like the Sonnax teflon coated rear stator bushing and their pump body bushing which can be used in the pump body and the reverse input drum (rear bushing). Also the input sprag - don't reuse the one that came out of it...
  13. NickTransmissions

    700R4 Information Thread

    Let's start with what I asked you above: Did you do a pressure test to confirm/deny TV cable adjustment is correct? Nothing else matters until you have done a pressure test. Conduct the test and post your readings at idle min-TV and full-TV. Here's some instructions for doing the test, along...
  14. NickTransmissions

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

    This is good information for folks looking to swap a 4L65/70/75E, as an alternative to a 4L80E, into a classic hot rod, resto-mod or other vehicle (Squarebody) with a built Gen 1 SBC or big block. Please update with the flex plate part number as that would complete the information chain needed...
  15. NickTransmissions

    700R4 Information Thread

    When was this trans rebuilt? Is it still under warranty from the shop that built it? The no-OD and no L/U may be related. For whatever reason, if you don't wire up the lock up kit correctly, sometimes the trans won't shift into overdrive...See this occasionally in 200-4Rs as well. That said...
  16. NickTransmissions

    Transmission Upgrade?

    Agree, I also like the visibility it brings to the transmission community (lol)
  17. NickTransmissions

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

    I'd do it if you're racing/street-stip and the like...Keeps you in the power band and accelerating nicely during the 2nd gear shift vs bleeding so much of it going off before you finally recover before shifting into 3rd...As you said, the pain is all in the price but buy once, cry once...
  18. NickTransmissions

    700R4 Information Thread

    Take a pic of the metal disc then remove it - take another pic of what's behind it and post them both here. Assumimg you are looking at the governor and not the speedo housing bore, I'm curious to see what you're seeing.
  19. NickTransmissions

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

    Lol, you'd be thinking wrong. I get what summit outlet is, it sells blems that aren't impactful to the functionality of the unit - I've done this a few times myself and beefed up the unit for whatever purpose or vehicle. What I'm saying is that you should have purchased a Gen1 SBC-compatible...
  20. NickTransmissions

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

    Yes, lots of folks are suckers for good deals, and unfortunately, they are rarely actually good. All too many folks leap before they look when it comes to transmissions, simply because they don't know any better. I could have laid it all out for you insofar as what to do and how to build the...
  21. NickTransmissions

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

    All that should work as long as you use the adaptor kit. The bells are deeper on the LSx Gen3 SBCs than they are on the 4L60Es that went in behind a Gen1 small block. You need a TMBX converter as well. Why did you buy a 4L60E for a gen3 small block? You could have saved a lot of money and...
  22. NickTransmissions

    NP 203 Married to a 4L85E

    Too bad...hope you wont experience the cross leaks and premature applied element failures that are common with that rivited sandwich plate and/or experience a failure associated with their pressure relief mechanism. You could have accomplished everything that kit does and more for less than...
  23. NickTransmissions

    4L80E Information Thread

    Starting a 4L80E information thread for those that want to learn more about this transmission (the best GM ever produced in my humble opinion), considering it for a resto-swap into a Squarebody truck or K5 Blazer (or anything for that matter) and/or considering taking on a rebuild of this...
  24. NickTransmissions

    NP 203 Married to a 4L85E

    You didn't actually install that Transgo HD2 kit, did you?
  25. NickTransmissions

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

    No idea until you provide more information like what transmission you have and why you think you need some sort of adaptor or spacer.

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