Turbo 400 Blueprint Rebuild part 1 of 2

Getting a TH400 ready for a 1968 Javelin

[@deeznutzz8375]

The most thorough Th400 video in KZbin.

[@elian222]

This is hands down the best TH400 rebuild video on KZbin! This was just like or maybe even better than observing my auto tech college transmission instructor twenty eight years ago :-)

[@roymonday5088]

i have to say this is one of the "best" transmission rebuild videos i have seen! Really enjoy all your videos. Not having rebuilt any transmissions since vocational school which was 1990 i rebuilt 2 different 400 turbos. This is a good refresher for the one i'm going to rebuild for my olds cutlass. Thanks again !

[@BMRacingPerformance]

Incredible job with your rebuild. Awesome work! -B&M Team

[@JustMike2791]

Respect, it's earned. Stand up team at B&M giving props where props are due.

[@Oldsmob455]

Just saw this. Thanks guys. I love B&M products for real.

[@nd318865]

Really amazing couple clips. I know more than ever why I would never do what you just accomplished... Pretty darn amazing and so well done. Thanks. I did do a servo replacement, separating valve body on a Sunday (unnecessarily as it turned out) on my sons 06 Ram a while back. dropping 7 balls all over. Fun finding a spot on the internet to show me where the balls had to go, (Thanks Cascade Transmission)

[@ViperSRTnACR]

Excellent video, one of the more thorough one's I've seen on here. Thanks for posting, very helpful indeed.

[@dailyinspiration9805]

Great video. Straight to the point. No blah blah I think I'm the next mechanic-turned-comedian jiber jabber. Time should be respected I wish more vids were like yours

[@Robonza]

Wow, what a great video. Thanks for such a great effort.

[@regmason2329]

Great attention to detail! I love that you removed the parting lines on the housing. This video is a must see !

[@jjock3239]

Great video. My transmissions have never required anything more than routine maintenance, but I am thinking of building a 400 with the switch pitch converter. I had one in my Toronado, and I loved it. Bob

[@johnymatic]

Killer videos man, I appreciate you taking the time to do it. It will help me tremendously! I can't tell you how many times I was yelled at in A&P school to not let T-gauges "Snap" into the inner bore lol, I never noticed any damage... Anyways thanks again!

[@LORDLANGERZ]

I found listening to you & watching part 1 & 2 very calming, not sure why, in any event I watched due to always wondering how an automatic transmission was put together inside the casing...awesome video...you have much more patience than me...for sure 😊

[@Oldsmob455]

I have heard the calming thing before. I don't know why either. lol

[@bloodruststaples]

Very nice video, very in-depth and clear. I didn't actually "blueprint" mine, but after a rebuild, it runs like a clock. Amazing brute of a transmission, even if it's only got 3 gears hahaha

[@RatsnestHotrods]

Great video my friend! Thanks for taking the time to make it I know it must have been a lot of work. Moving on to part 2

[@nairblab4061]

Thank you so much for this video. I've probably referred to it 5 or 6 times so far during my rebuild - and I'm not done yet!

[@daviddavis9411]

Very good quality video

[@MrStatic101]

Great video! Thanks for taking the time. I learned a lot!!

[@DavidSmith-mk7qo]

A good example would be the old Jeep Wagoneers used a 400 and the later say 80s used a 727. But both were used behind the 340 AMC motors.

[@bctrails7206]

it is important too check your ''a-b'' measurement before swapping tail shaft from a two wheel drive to a 4 wheel drive bellhousing or vise versa even if bolt pattern is the same. for example ford th400's have 1/8th differance than a chev or gm witch means your tourque convertor will not properly seat causing pump issues over time and a lot of vibration at low idle along with poor performance.A-B measurment is how far the tourque convertor seats into the tranni in relation to the bellhousing mounting surface.learned this the hard way was not mentioned in repair manual.enjoyed the vid thanks!

[@curtisballer688]

Just like to say very well done on "This is not a instruction video". Very knowledgeable and helpful. I kinda wish all vid's I see are clear as you were! Thank you for sharing. Question? In your rebuilding, do you trouble shoot trans problems? Or do you just rebuild when there's a problem? Again nice to see thoroughness and clearness in a video.

[@Oldsmob455]

Problems should always be troubleshooted as best as possible before shooting the parts cannon at them.

[@thehappybuilder7034]

i was thinking the same thing......for a Non-instructional video.....this was one of the best and most helpful instructional videos ive seen for the TH400.......im pretty sure i fried mine doing a fluid/filter change.....so i might be rebuilding mine soon......or doing a 4L80e swap ;) THANKS FOR THE VIDEO

[@MotorSwapDan]

SUCH a good video!

[@Oldsmob455]

Thanks.

[@marinamedeiros2982]

Turbo 400 the best even Rolls Royce used them.........simple and cheep too

[@galaxyprime6543]

thanks helped me

[@adriennewest4024]

OK. I am working on a 1987 Chevy Blazer. Has a 350 Engine with a Turbo 400 Transmission. When torn apart, it had 5 check balls total. I diagramed where they went and put that many back in, in the same spot. After rebuild, Transmission worked fine for 2 days, then started not wanting to shift right, lost forward gears with reverse only working. After letting it set, we went to drive it again, had forward gears back, but problems with going into second. So we tore the transmission down again to find that the retainer ring that holds in the intermediate clutch plates was warped and not in the case properly. I've never seen one do that ever, and I've been doing transmissions for a while now.

[@fried_daddy]

I've nwver seen a transmission case with that much flash on it. Nice video!!!

[@mechguy83]

Great Video! Looking forward to part 2!

[@olzkng]

Excellent video!

[@flynncowboy]

Thanks for the Video - I now see that my Governor piston doesn't move inside the shaft. The Trans wouldn't shift from 3 - 4 and had been sitting for years before I bought it.

[@hddm3]

really good job!

[@black85chevy]

Awesome video

[@zihyer]

Thanks much for the very helpful videos. Two thumbs up all the way!! Just curious.. what would happen if i just left the 2-3 accumulator piston spring out, only used 5 check balls but didn't do any of the other mods?

[@kingjameswww]

thanks for posting

[@Rick-O-Shay60]

On your tear down you make the comment that if you were only planning on changing output shaft, that you could stop the tear down from proceeding any further after only removing the valve body, as if then all you would need to do is remove the case to center support bolt to remove the output shaft. Perhaps I misunderstood your comment, although I'm sure you would agree that you have to completely tear the trans. apart to remove the shaft.

[@cdnpont]

Great vid. RR quality rebuild, but anyone can garner some good stuff from it. Like me, the novice! cheers.

[@Stewart0494]

Very interesting video....

[@henrygerlach9713]

Thank you for the video. Maybe skip over the zipping out of valve body bolts. (I hope anyone watching knows how to do that) And don't skip the removal of the valves.

[@codymoncrief2128]

That Amc TH400 was in a J-truck, Cherokee, or Wagoneer with a quadra-trac, based on the tailshaft and vacuum modulator

[@V8Lounge]

This is a great tutorial for the TH400. I found an inner lip seal and an inner beveled seal (without a thin lip) in my rebuild kit. They have the identic size for the inner size of the intermediate piston and the direct drum piston. Does anybody knows where to use the lip seal and where to use the beveled seal.

[@goturnlex]

2018?? i wanna share my experience rebuild this type of at. in saudi Arabia 2015-2018 my uncle teach me how to fix this thing..but its hard but after 6mons of training.. finally get it and i will tell you this is more easy to fix this.. "if you have the right tools and complete rebuild kit".. than the modern gm at.

[@jimmyo5367]

Excellent 'non-instructional video'! I just tore down the entire thing exactly as the video 'non-instructed' with 1 exception. I was not able to remove the sun gear. I've never attempted anything this involved so I don't know if this a bad thing or it's just held in place by some retaining clip / snap-ring. should I keep going?

[@jhefersonrodriguez1555]

Buen video aprendí muy buenas cosas

[@McCracken_9]

good video

[@JoeHynes284]

I've found most of the people who claim they are not experts are usually the people to watch and learn from

[@MrCam1976]

Awsm vid, cheers. Where did you get the tooling to drive the bushes in and out? Im in Aus so a link to where you got them would be helpful. Cheers

[@Spyke383]

AMC used TH400's? I alway assumed they were 727's. any chance u have a list to Vehicles that had that bolt pattern with GM trans's?

[@Sm1nts2escape]

Thanks for the videos. Who makes those bushings drivers?

[@hobbeekid]

That Ron sessions book is now out of print, hard to get...

[@G-TDR]

Where can I download a copy of that spec sheet you where putting your measurements on the whole time you made these videos ?? Great video by the way

[@jesusriobueno2469]

Great!

[@kevinkehlet1543]

Jeep had Th400 from 1971-1979 in the FSJ

[@wildbill3006]

Great video. Is it possible to get a download of the checklist that you created? If not a download can you email it to me? Thanks.

[@adhamxgeeh7292]

Most Complex thing is tha transmission

[@mpetersen6]

The most complex mechanical device the average person will ever own is a wrist watch. A local jewelry/watch shop once had a sign over the counter. "The only person who ever takes a watch apart is a trained watchsmith or an idiot"

[@savage9scorpio]

I LOVE IT!!! Is it all motor? Plz tell me so!

[@backoffjoe8347]

looks like mission Impossible to me.

[@mikewolfe789]

I am rebuilding my th400 and noticed it has the waved plates in the direct and foward,intermediate drums do you recommend putting them back in or is it ok to replace it with a thick still for daily street riding 450hp 478tq any help will help and thanks for the great videos!!

[@Oldsmob455]

As long as your clutch stack clearance is correct I don't think it makes much difference.

[@michaelrj9]

Need help! I have a TH400 that I found out the Speedometer drive gear clip is missing making my speedometer not working. The drive gear is plastic and has the groove for the clip but it is not on the shaft or the gear. I pulled the tailshaft housing and it is not anywhere. I pulled the pan on the transmission and still don't see it. Where could it of moved to? I was thinking of pulling out the Governor to see if it fell into that area but am concerned I will create more problems removing it. Will things fall apart or will it all stay together if I remove it?. (Transmission is still in the car). I tried reaching into the transmission from the output shaft area but don't feel it there. I used a magnet to move around and didn't feel it. Any help will be greatly appreciated.

[@jpayne80]

What size of driver is needed for the rear case bushing? Around 14:25 in this video? Thanks!

[@DavidSmith-mk7qo]

If you haven't solved this issue I may be able to help. B&M sells a kit with selective springs and weights that works well. Takes a bit of trial and error but you can get it dialed in with a little time. Also I have a valve body trick for first gear that may help. Message me if you like.

[@ryanr9348]

What bushing driver kit to install most these bushes do you recommend

[@rivercrestcolts55]

I gotta question (total transmission noob), I was researching how to change the shift points on my 454SS (400 turbo) and it said change the weights in the governor, it shifts at 4k I was wanting about 4,500 to 5,000, would the shift point change kit suffice? It also has 260,000 miles on the trans too so I don't want to take a chance at tearin it up. Thanks!

[@user-ob9qm2vj8u]

good day, I have a problem with the same type of gearbox, it won't go forward and it wants to go into reverse, can you give me some advice, thanks

[@Oldsmob455]

Get a trouble shooting guide for your trans and study it

[@user-ob9qm2vj8u]

@@Oldsmob455 thanks for your reply. but I'm sure you know what the problem is😂

[@draaks1]

can you post or message me that spec sheet you made. Im about to rebuild my first th400 and that would really be helpful for me to keep everything in order, thanks!

[@artjag1]

I had it banged into me in Grammar School back in Yorkshire...now English Grammar is one of my pet peeves....LOL...I am working on my latest creation...a Super 7 on steroids...that is one way it was described at Portland ABFM...Unfortunately using an old 400 it has been somewhat problematic.....replaced with another "good " : used unit...well many years ago...and now we have no gear movement ...initially we had some but I think we may have sucked up some old fluid perhaps into the valve body...Replaced the filter and refilled fluid and now nothing...

[@kalervohalunen8609]

Edmund Arthur Dickenson mtoKip🔙👟

[@VitiatedsHOWTO]

I’m not even attempting this I’ll pay to have it done

[@OMRY1561]

Hi there i love your video thank you sharing that , i have question for you if you can help me with my car . i have 1968 cadillac devill that i purchased from arizona , in the first day the tranny was shifting smooth then start acting bad ,now when the car cold shift perfect after 2 or 3 minutes driving the tranny will shutdoune notheing go in gear it well go in gear if i tern the car off and restart it and it well drive for a little and stop , if you can help me pleas let me know whats going on if it need a rebuild or not , thank you best regard OMARI

[@OMRY1561]

***** thank you for your time

[@bctrails7206]

if it was recently rebuilt builder may have forgot to remove the pump breather plug only way to tell is to get at the top of bellhousing and look.

[@bctrails7206]

or it could be your intake vacume shift modulator on the side of lower passenger or leaking collapsed vacume hose?had the same issue once was blocked pump breather.

[@artjag1]

great visibility , my grammar tells me that off of ...is wrong and should be merely "off " other than that a super informative vid many thanks...Art

[@sammygonzalez7627]

Much bad he did decided to wash it... sorry

[@tyshawnbrockington7918]

hahahhahahhahahahhahhahah

[@artjag1]

oh also it should be "further " not farther. sorry..

[@johnnybrigham8154]

Hi what bushing driver are you useing??