"700R4 Rebuild Gone Wrong" Follow Up - Going Back Together With It

[@bobbysanders6231]

Good video and thank u for teaching.

[@nickstransmissions]

Thank you, Bobby!

[@stevenbauman3501]

When I did my own transmission. I rebuilt it then took it all back apart to double check everything before I put in the work to put it into my vehicle that was 25k ago

[@nickstransmissions]

Thanks for watching, Steven...While that does consume a lot of extra time, it's actually a very good idea for someone new to the process. By doing it twice, if anything seems different the 2nd time, and upon investigating the difference, you find that the 2nd time around you did it correctly, you will have caught a mistake that you didn't realize you made in the initial assembly. Nice work!

[@hybridmusclegarage4590]

Awesome man!! Always great videos!!

[@nickstransmissions]

Thanks, Hybrid Muscle!

[@wilburnmiller1851]

Great job

[@nickstransmissions]

Thanks, Wilburn!

[@JOMaMa..]

Thanks for sharing your knowledge and experience

[@nickstransmissions]

You're welcome and thank you for watching!

[@michaeldeas1969]

The 700-4r is a good transmission with a few upgrades.

[@nickstransmissions]

Yep, definitely better than some give it credit for...Thank you for watching, Michael.

[@gailtaylor1636]

I am, being true to form, going to take credit for the previous videos great performance. I linked it to couple of facebook groups. The content is irrelevant. Everything is always about me. 😉 Still say the voice doesn't match the body...😛 Your vids are without doubt the best on the internetz. Thank you for all the help!

[@nickstransmissions]

Thanks, Gail! Appreciate the kind words😀

[@LarsonFamilyFarm-LLC]

Lots of new parts, he'll be getting a great rebuild. I like the groves cut on the sun-gears for better lubrication and the alto 7-pack 3-4. So the old case w/ low-reverse pitted can be fixed...but gig work would take time and be too expensive versus a new case....I can see it. That cast aluminum at the salvage yard will bring about $7.

[@nickstransmissions]

For sure, thanks for watching LFF!

[@محمدعليوي-ض3ج]

Thank you so much for sharing this knowledge of you with us. God bless you ❤❤❤❤❤❤

[@nickstransmissions]

You're welcome and thank you for watching!!!

[@davidsabyan2481]

Which 2-4 band are you using?

[@nickstransmissions]

Hi David, it's Alto's wide red band.

[@gloriawoodall6747]

I was hoping you would go into greater detail about the center support. There is a narrow sprag and a wide sprag center support. When did they go to the wide sprag and are they interchangeable? Which one do you recommend? Also, I ran into a difference in the reverse input drum. One had a smaller piston (OD) made of steel with lip seals and one had a larger od piston with lip seals. When did they change?

[@nickstransmissions]

Hi Gloria, thank you for watching! I can do a video dedicated to the center support and discuss the changes and interchange options...Also, there weren't any sprags in the TH350-700R4-4L60E center supports (sprags are dog bone-style one-way clutches), GM only roller clutches. I'll also be doing a dedicated video on Reverse Input drums..Both vids should be on the channel by end of the week. Thanks again!

[@gloriawoodall6747]

@@nickstransmissions Thanks for the reply so quickly. I did not expect that. Looking forward to the videos. Thanks for taking the time to help us.

[@nickstransmissions]

You're welcome, Gloria...Please sub if you haven't already done so and hit the bell icon so you'll be notified when I publish those and other videos!

[@Matthew-j3b]

My transmission and engine were so bad they couldn't save anything Had get that from salvage yard I never had issues However my sister husband car there radatior blew and they had major issues with salvage motor

[@nickstransmissions]

Thanks for watching, Matthew...Sounds like you had some good luck with the junkyard transmission.

[@Matthew-j3b]

@nickstransmissions that car got totaled from truck hitting rear end in snow Suspension was twisted Loved that car cause had race seat and belt besides other things It would stop in 50 feet I did it when deer ran out in front of me, Some of the new cars are junk with all government mandates

[@nickstransmissions]

Agree - technologies that aren't fully mature are being rushed into these new vehicles and lots of recalls, failures and customer pain points have been the result.

[@1320pass]

Why the K case? Appears to be a regular 86-up case with aux VB.

[@nickstransmissions]

Why the K case? Because it's what was available...Not sure about your area but here 700R4 cases and complete cores are very difficult to find, especially intact (there's usually one or two important things missing, like speedo housings, fasteners or hold-down clamps for the aux vb-to-pump feed pipe, governors, etc... Thanks for watching, 1320pass.

[@Festerman50]

Thanks for posting these videos. I have a hard question. I had my 700r4 rebuilt in 2010-11. The guy who rebuilt it said he put a check ball in that caused it to down shift from second into first hard. Do you have any idea what check ball that would be?

[@nickstransmissions]

You're welcome and thank you for watching. That is a hard/good question...I don't know of any location where placement of a check ball would make an otherwise normal 2-1 downshift feel harder/firm. Did he say what the rationale for doing this was? Harsh 2-1 shift would put some undue stress on the gear train and in particular the low roller one-way clutch. Sorry that I can't be of more help there but drawing a blank..If I think of anything I'll let you know...That said, your valve body should have three check balls if it's an early, non-auxiliary valve body type unit or two check balls in the valve body if it's a later aux valve body unit. For the case, you'd have a check ball at the bathtub location closest to the selector shaft for early non-aux VBs but no check ball there if the unit is an aux-VB style 700R4. In 1993, a Low Reverse check ball was added to the valve body - it was that year only.

[@Festerman50]

@@nickstransmissions this is a 83 Z28. It was 2010 roughly. I found him on marketplace and he did a good job. I gave him extra to beef it up. Not sure exactly what he did. I don’t drive it much but we will see. I’ve rebuilt the motor and I’m picking up a used 700 and rebuild it to handle about 500 hp. Using your suggestions. Thanks again

[@nickstransmissions]

Gotcha, yea hard to say but you'll know once you get into the unit..It may be helpful to buy the ATSG Check Ball book for domestic transmissions...Has all of the older GM, Ford and Dodge 2,3 and 4-speed transmissions' check ball locations and what they are/what they do so you can compare what you see in your trans to the factory check ball configuration.

[@autumnalmighty8337]

Hi I just got a 700r4 rebuilt on my 85 c10 and it jerks when I put it into drive. What could this be? The transmission guy tells me it’s not the transmission but I don’t know if he’s being honest or not

[@nickstransmissions]

Hi Autumalmighty, is the engagement into drive consistently harsh/abrupt such that it feels like it's jerking the entire vehicle?

[@autumnalmighty8337]

@nickstransmissions yes it happens every time and jerks the truck harsh. But it drives great it just happens when I put it into drive. It sort of bangs into place every time

[@nickstransmissions]

Ask the builder what forward drum he installed into the transmission...Check this video out for more context before you ask him...I have a strong suspicion as to what happened but would be good information for you to have: kzbin.info/www/bejne/pXjVlGZnjLiJm6c

[@autumnalmighty8337]

@nickstransmissions Ah ok thanks nick just watched the video. Also I called him and he said he said he used the same one that was in the transmission, which is an 85. I’m assuming is the 152 drum? What do you think is happening here?

[@nickstransmissions]

Correct - you should have the 152 drum but my guess is that you have an 097 or 716 drum with the larger forward feed orifice which is why your engagements into Drive are overly harsh...that could be further exacerbated by excessive clearance in the forward clutch pack (.060+). My guess, atm.

[@Eljuancho915]

Can u tell me what difference is between a gas or diesel 700r4 if any also I have a 1shm trans on my 6.2 but truck is 1984 model

[@nickstransmissions]

To my knowledge, the governor and (I think) the primary spring between the throttle valve sleeve/plunger and throttle boost valve. It's been ages since I rebuilt a diesel 700R4 so don't quite remember 100%.

[@Eljuancho915]

@@nickstransmissions can u point me in the direction to find a manual and or a rebuild kit

[@Eljuancho915]

Also I have a 1984 suburban with the 6.2 the trany that is on it is a 1shm from what I get is a 91 4.3 application u think I should rebuild it or try and find a diesel 700r4

[@nickstransmissions]

Go to ATSG (Automatic Transmission Service Group) website and download the manual for the 700R4 (I think it's listed under 4L60 1982-1986, if you're working on the 1986) though you can also purchase the 1987-1993 manual for the 4L60 and get all the same info plus additional specs not found in the 1982-1986 manual. Rebuild kits can be found on eBay, transpartswarehouse.com - those are the two best places to find all inclusive kits...You can also buy a Rostra Wiring Harness from Transparts Warehouse - just let them know what year 700R4 you're working on and they'll get you what you need.

[@Eljuancho915]

Thanks for ur help 1 more question have u seen a gas 700r4 on a 6.2 diesel before ? Do u think its worth building the one I have it is a k case and a 91 model so I should have all updates already I’m just not sure if i get it rebuilt and it burns up again