700R4 Information Thread

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TDoc

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i spot a post 1990-1992 dipstick.
That could be retrofitted but it also could have come with a reman or a replacement 700r4 in the early 90s

The previous owner of my k5 said the owner before him owned a transmission shop so I’m sure my transmission has been replaced or rebuilt at least once. Everything is covered in nearly 40 years of oil and dirt, I haven’t been able to see a reman sticker.
 

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Nick, do you know if the 700r4 in the square bodies works like how the 700r4 does, or the 4t60e, where grounding the ALDL pin for the TCC makes it lock up
 

NickTransmissions

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Nick, do you know if the 700r4 in the square bodies works like how the 700r4 does, or the 4t60e, where grounding the ALDL pin for the TCC makes it lock up
Good question, unfortunately I'm not sure as you're really asking an 'electrical' question as opposed to a transmission question and I'm a fish out of water when it comes to electrical!
 

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Good question, unfortunately I'm not sure as you're really asking an 'electrical' question as opposed to a transmission question and I'm a fish out of water when it comes to electrical!
oh lol. If I find out for sure ill try to report back.
I did a quick google, seems like it is
 

NickTransmissions

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Bumping this thread with a 700R4 Teardown vid that I recently published...This one was a cluster...Long story short, a reman company sold my customer their 500hp 700R4 that they dubbed the 'Nemesis'...Needless today, it wasn't built for handling anywhere near that level...

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Enjoy!
 

bucket

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Bumping this thread with a 700R4 Teardown vid that I recently published...This one was a cluster...Long story short, a reman company sold my customer their 500hp 700R4 that they dubbed the 'Nemesis'...Needless today, it wasn't built for handling anywhere near that level...

xc_hide_links_from_guests_guests_error_hide_media

Enjoy!

Lol, I just Googled that name for a transmission. I have no experience with the company, but I probably would never consider a trans from a company with that "big box store" type of name.
 

HotRodPC

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Bumping this thread with a 700R4 Teardown vid that I recently published...This one was a cluster...Long story short, a reman company sold my customer their 500hp 700R4 that they dubbed the 'Nemesis'...Needless today, it wasn't built for handling anywhere near that level...

xc_hide_links_from_guests_guests_error_hide_media

Enjoy!
And it wasn't Monster or that spin off guy. Can't think of his name now. But... Dammmit, getting old sucks. You probably know who I'm talking about, but he's a spin off Monster and he's just as bad, maybe even worse cuz his support is even worse when the trans he sells you is a POS and they simply just blame it on you and claim you set the cable wrong so they will not honor any warranty whatsoever.

EDIT, Trying to recall the name of that guy, seems like it was Mad somebody.
 

NickTransmissions

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And it wasn't Monster or that spin off guy. Can't think of his name now. But... Dammmit, getting old sucks. You probably know who I'm talking about, but he's a spin off Monster and he's just as bad, maybe even worse cuz his support is even worse when the trans he sells you is a POS and they simply just blame it on you and claim you set the cable wrong so they will not honor any warranty whatsoever.

EDIT, Trying to recall the name of that guy, seems like it was Mad somebody.
I believe you're thinking of Mad Dog Transmissions in Atlanta...I believe the owner's name is Lou. I think he used to be at Monster then started his own company(ies). Sounds like he uses the same MO that all the large remanufacturing companies have adopted when it comes to post-purchase customer service (or lack thereof).

It's a shame because like 90% of consumers looking for a 'new' transmission have no idea what they're buying; a majority believe they are purchasing a brand new transmission that comes with literally brand new soft AND HARD PARTS throughout the entire unit...It's not until they see how these things are slapped together for themselves do they realize that whatever preconceived notions they have are completely wrong.

Another major offender are the big auto parts chain stores...Those units and their respective torque converters are complete F-shows.
 

NickTransmissions

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Lol, I just Googled that name for a transmission. I have no experience with the company, but I probably would never consider a trans from a company with that "big box store" type of name.
Yep, they are all alike in my experience, tearing down their rebuilds.
 

HotRodPC

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Bumping this thread with a 700R4 Teardown vid that I recently published...This one was a cluster...Long story short, a reman company sold my customer their 500hp 700R4 that they dubbed the 'Nemesis'...Needless today, it wasn't built for handling anywhere near that level...

xc_hide_links_from_guests_guests_error_hide_media

Enjoy!
I watched the video. They missed many upgrades. For 600hp, I would have sleeved the input drum also. Sonnax makes the kit for that too. I believe it's called an input drum reinforcement kit. Usually only needed for higher rpm units. You certainly know much more about the drum interchange than I do and why I prefer not to do hi po 700r4 builds. I'll do my own, but not for anyone else. I am aware of the 87 case. I usually prefer just to get an 88up case. I actually scored 2 OEM 1993 model cores and they were supposed to be good working units. They were a package deal and one of them has a broken piece out of the bellhousing. I figured it would have some good hard parts in it being the last year. I'm not so sure any 700r4 is worth a superbell since those are only needed for very hipo builds that a 700r4 just isn't going to handle so it's an oxymoron to try and save this case unless you dont mind missing a bellhousing bolt to the block bolt. $50 for both 93 cores, was well worth it.

As far as the 5 pinion planets, like you said, broken planets was never a real common problem so why bother? And if you do, only use the OE GM 5 pinion planets. You can get Chineese 5 pinion HD planets off of ebay for cheap and they're worse and weaker than the GM OE 4 pinion planets. I've opened up 2 so far with broken 5 pinion planets. Chinese JUNK.
 

HotRodPC

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I believe you're thinking of Mad Dog Transmissions in Atlanta...I believe the owner's name is Lou. I think he used to be at Monster then started his own company(ies). Sounds like he uses the same MO that all the large remanufacturing companies have adopted when it comes to post-purchase customer service (or lack thereof).

It's a shame because like 90% of consumers looking for a 'new' transmission have no idea what they're buying; a majority believe they are purchasing a brand new transmission that comes with literally brand new soft AND HARD PARTS throughout the entire unit...It's not until they see how these things are slapped together for themselves do they realize that whatever preconceived notions they have are completely wrong.

Another major offender are the big auto parts chain stores...Those units and their respective torque converters are complete F-shows.
YES YES, it's Lou with Mad Dog and was with Monster at one time. I've heard nothing but BAD about his transmission and support is horrible, even worse than Monster. I tell everyone, ask around and just find you a reputable builder in your town or even someone out of town if you trust them that much. Reason being, when it comes to support or warranty, the shipping alone is a fortune so rather than saving a couple hundred dollars buying from places like Monster, Mad Dog, Trans Depot, Summit, etc etc, where you'd have to pay shipping AGAIN 2 ways for a return, may as well get a local guy to do it.

I'm so out of touch with transmissions now. Been gone to long, getting to old and forgetting so much. Way to much going on that I doubt I'll ever get up again to do them and would only be doing my own now. I know I want to get an OD option in my 84 454 C20 truck. I was thinking it's worth it to do the stand alone controller and a 4L80-E. I forget now, but it seems like a 6L80-E might be the better option but I forget why.
 

NickTransmissions

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I watched the video. They missed many upgrades....
Ha! They missed building the transmission at all, lol!
YES YES, it's Lou with Mad Dog and was with Monster at one time. I've heard nothing but BAD about his transmission and support is horrible, even worse than Monster.
I've only read a few positive things about his transmissions and had to search high and low to find them (maybe they were him or friends' accounts posting good things, who knows...) but yes, agree 100% on finding a local, trustworthy and competent builder who will stand behind his or their work...I make mistakes and have had come-backs (very few, relative to most bench builders) but I have always made things right with the customer immediately...Guarantee/warranty work always gets prioritized whenever I do have to do some corrections on a build, regardless of whatever else is going on in the shop.
I forget now, but it seems like a 6L80-E might be the better option but I forget why.
The 6L80s now have stand-alone controllers on the market for them; up until recently folks' only option was to swap over an entire C3 including the whole harness, PCM, etc to do a swap into an older and/or custom vehicle. Now a few companies are making controllers that are more or less plug-n-play. Those transmissions are very easy to work on and generally very reliable once you fix their problems (most of which are associated w/the converter, pump and 3-5-R drum).
 

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Hey @NickTransmissions do you have a source for different sized belleville plates or backing plates on the reverse input drum? When I went to put mine back together my clearances seem to be too tight. Between the backing plate and the snap ring I'm seeing .025 to .030 which by the book is too tight. Your videos and the ATSG book suggest that there are different backing plates that can be swapped to achieve the proper clearance. But when I try to find a new backing plate the only thing I can find is the same one everywhere. My backing plate is .269 thick and the only ones I can find for sale are all .260 which I don't think is enough of an improvement to improve my clearance. The old frictions and steels measure up to be the same as the new frictions and steels as well.

Trying to find a different belleville plate is confusing in a different way. My reverse input drum is the second style with the round feed hole. I have a conical belleville plate. I wasn't sure how to measure it. To me the biggest dimension is the height caused by the conical shape so I measured the total height. Any I have found for sale only seem to measure the thickness which doesn't seem like it would make a sizeable impact on the tolerances. Idk. Just seeking some guidance if you have any on where to look.
 
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