TH400 Build Series - Filter + Oil Pan + Modulator + Governor + Speedo

Join us as we tackle the remaining parts of this TH400 build.
1). TH400 Filter (early & late)(shallow & deep).
2). TH400 Oil Pan.
3). TH400 Modulator.
4). TH400 Governor.
5). TH400 Speedo.
6) TH400 Extension Housing (Mention of 4WD Adapter Housing).
Help This Channel Grow:
Coming Soon!
*****TH400 Build Series*******
TH400 Teardown: • TH400 Rebuild Series -...
TH400 Inspection: • TH400 Rebuild Series -...
TH400 Building Clutch Drums: • TH400 Build Series - B...
TH400 Building Clutch Drums (Continued): • TH400 Build Series - B...
TH400 Bushings: • TH400 Build Series - B...
TH400 Prepping Case for Assembly: • TH400 Build Series - P...
TH400 Planetary Gear Set - Assembly & Installation: • TH400 Build Series - P...
TH400 Intermediate Clutch, Band, Direct & Forward Drums: • TH400 Build Series - I...
TH400 Pump + Front End-Play: • TH400 Build Series - P...
TH400 Valve-Body + Servos: • TH400 Build Series - V...
TH400 Filter + Pan + Modulator + Governor + Speedo: You're Watching It
TH400 Different Cases (Chevy vs BPO): Coming Soon!
RESOURCES:
1) Apparel:
Eyes: amzn.to/2JguhZN
Hands:
Nitrile Gloves: amzn.to/2Y6XwSN
Work Gloves: amzn.to/3ux43IT amzn.to/3P9xtpN
Shirt: amzn.to/3HhDdMf
Pants: amzn.to/3Pfe8nq
3) TH400 Repair Manuals: 📕
amzn.to/30DYx6Y
4) TH400 Tools: 🔧
Pump Puller: amzn.to/2VmhXgZ
3-Ton Arbor Press (12 inch working height): amzn.to/2Reqmyx
Lip Seal Installer: amzn.to/2Gz4KI5
Lip Seal Installer (Huge Time/Headache Saver): amzn.to/2MxUC8O
Pump Alignment Band: amzn.to/2J13lNF
Universal Clutch Spring Compressor (Use in trans & drums): amzn.to/2YHQGn6
Adjustable Clutch Spring Compressor (Use with shop press): amzn.to/2W2DAQs
Universal Bushing Driver Kit (Larger Sizes): amzn.to/2M1aQHn
Universal Bushing Driver Kit (Smaller Sizes): amzn.to/2Et1ON3
Snap Ring Pliers (Clutch Spring Compressor Snap Ring): amzn.to/2GwwixP
Snap Ring Plier Set (Pump Circlip Snap Rings): amzn.to/2IUxpdu
Feeler Blades (Straight): amzn.to/3uwQTvi
Feeler Blades (Offset): amzn.to/3Y3ehy1
Pick Set: amzn.to/3F9ezL7
Pocket Screwdriver: amzn.to/3FfsCiC
Sanding Stone: amzn.to/3wtlnzs
Welding Clamp: amzn.to/3WPRTXn
Mini Hammer: amzn.to/3JBiLXw
5) TH400 Parts: 🔩
Overhaul Kit (Includes Bushing Kit, Bearing Kit, Bands, etc): amzn.to/2MhK4e7
Valve-Body Kit: amzn.to/2HwNAwE amzn.to/3iKqF67
Accumulator (Aluminum): amzn.to/3FhYxzt
Band (Front) (Intermediate): amzn.to/2EpgZGU
Band (Rear) (Low/Reverse): amzn.to/2QjqpbN
Intermediate Sprag: ebay.us/PA63ZL
Intermediate Roller: ebay.us/lK2SXd
Low Roller: amzn.to/3W17C5P
Pump Gears: ebay.us/uLDtbP
Bushings:
Kit: amzn.to/2QpxY0V
Upgraded Case Bushing: amzn.to/3Bjhy2L
Bearing Kit: amzn.to/30APEev
Washer Kit: amzn.to/2QgjPmx
Oversized Washer: ebay.us/H5BzBd
Governor Gear Kit: amzn.to/2WjQ7lU
Modulator (Red Stripe): amzn.to/2ErS99H
4L80E Center Support Bolt: amzn.to/3Dq5FJ4
6) Shop Supplies: ✏️
Transmission Assembly Gel: amzn.to/2WrN7nT
Light Tack: amzn.to/3NqXf7D
Firm Tack: amzn.to/3GKp34i
Hi-Temp Grease: amzn.to/3S2j6oY
Thread Locker: amzn.to/2YLtmFk
Brake Parts Cleaner: amzn.to/2HxQ1Pz
Spray Adhesive: amzn.to/40JQ1lj
DISCLOSURE: 🕵
Links provided are affiliated links with the associated websites. While there is no extra cost to the purchaser, a small portion of the sale goes to support this KZbin channel.

[@brett4700]

Thanks for all the great info, you saved my transmission

[@TempoDrift1480]

I appreciate the straight forward approach to this video. I've watched dozens of other ones and just can't follow them because the host is either over the top in personality or they just can't convey the information. I'm only 10 minutes in and Im engaged, not put off and have already learned stuff. Excellent job.

[@cockasorrus7475]

Thank you for the invaluable little details about the filter and direction of modulator bracket. Excellent advice on the governor as well!! Thanks again!!

[@SouthpawAutoworks]

You bet! Appreciate your feedback. Thanks for dropping us a line, James.

[@stenbrunnstrom8087]

Thank you for the best TH400 I have seen.

[@SouthpawAutoworks]

Appreciate your feedback.

[@mer58lin]

Thank You, the details that you tell about saved me a lot of grief. Great Job!

[@SouthpawAutoworks]

Right on! Thanks for subscribing. Appreciate the support.

[@r66dTesla]

Such a thorough explanation and great camera work as always SouthPaw you guys helped me so much with my own project th400 72’ shorty thank you !

[@SouthpawAutoworks]

That's great news! Glad it was helpful. Positive feedback is always appreciated. Thanks for dropping us a line, Dr. Tesla.

[@StrifeWolfe]

Thank you for these videos. Using these to rebuild the TH400 on my big block swapped El Camino. With an upgraded rebuild kit, a few Sonnax parts, and a shift kit, this thing should be be solid.

[@SouthpawAutoworks]

Right on! Happy building.

[@kenchaffin4946]

Absolutely fantastic 👏

[@SouthpawAutoworks]

Thanks! One step closer to an orange classic...

[@jeannebowers8856]

First time I saw a "speedo" looked like this! Great video!

[@SouthpawAutoworks]

LOL! The positive feedback is appreciated. Thanks for dropping us a line.

[@alanseaton9640]

I had a `67 Impala SS with the early design pan and filter. I read that it was better for racing because the oil would move to the rear of the pan under hard acceleration and the filter pickup was there.

[@cadenspears4229]

The most helpful set of videos I’ve seen

[@SouthpawAutoworks]

Right on. We've got plans for more. And we're aiming to improve the viewing experience. Your feedback is appreciated. Thanks for dropping us a line. PS - If it feels right to you, please help us spread the word about this channel. 1 Arm Transmission Builder: (60-Sec Preview) kzbin.info/www/bejne/r2S5mquXlKqWZ6c

[@floydslinker8884]

Great job on the 55. FLOYD

[@SouthpawAutoworks]

Thanks, Floyd!

[@jamesrico]

Hey guys really liked this video and the information you have provided.

[@SouthpawAutoworks]

Right on. Thanks for dropping us a line.

[@thomasdavison8996]

Great video and breakdown on each step of maintaining the Turbo400. Just what I needed to start my education on the Turbo 400. I have an original older Turbo 400 from a 67 Camaro, but it has a bigger modulator with a threaded looking screw coming out the end and a separate vacuum port. Should I continue to use that style of modulator? Thanks.

[@ourkid2000]

This is truly a great series on these things. I have learned so much! Are there any differences in the parts of a TH425 and a TH400? I'm looking at rebuilding my TH425

[@lawrencetrapani5623]

I have an TH 400 that was working fine then from shut off tobstart the next day, when I put it in reverse it acted like it was trying to go forward, when I put it in 1st 2nd and third, same thing wanted to go forward but would engage in all slots starts in neutral and park. Fluid was couple quarts low, replaced it and no difference. Have taken from vehicle and pan off had clean no burn fluid, pan had minimal Grey matter no chunks etc. Will I have to rebuild whole trans at this point? Ps shift wire on side was disconnected, valve body was super clean also. Your input would be appreciated if you do such things! GREAT CHANNEL and Most Informative of any I have seen! Thank you and yes I tell my friends about this channel too are you a trans shop also?

[@jeremymcnicol9585]

If you keep making vids I'll keep watching

[@SouthpawAutoworks]

Right on! Thanks for the support.

[@tomasgustafsson3855]

Great video! I have a question about the oil pan. I have a Th400 with the old type filter and my pan has started leaking so I’ve ordered a new pan, but it’s without that D shaped groove in the bottom. Will it still fit?

[@davidhodges1195]

Hi there great video very helpfull Thanks Could you tell me where to purchase The short intake tube And bolt Thanks Dave

[@johnweaver8470]

Great video my 78 GMC came with a 454 turbo 400 with the deep Pan with the spacer under the filter did those come with any heavy duty internals straight cut gear's etc?

[@SouthpawAutoworks]

Straight-cut planetary gears are typically found in TH400's used in motorhomes, dump trucks, etc.

[@samkaplitz9036]

I've got some prices on shop rebuilds.Looking like $2000- $3000 including removal & install. If I do it,how much $ would I need to buy all the parts & supplies?

[@TheNachoDaddy]

It was a little sad watching this video. This was quite the journey.

[@SouthpawAutoworks]

But, wait!....there's more! ;) Also put together another series on the TH400. It's called "TH400 Build - Additional Info." It's a growing series... TH400 Torque Converter Install (Made EASY): kzbin.info/www/bejne/jIfHgYejp5Jmpq8 TH400 End-Play Specs: kzbin.info/www/bejne/d3jHp4CGeZebec0 TH400 Torque Specs + Torque Patterns kzbin.info/www/bejne/Z6qpkKGln5ZlptU Appreciate your comments.

[@firstgenerationgarage2803]

Great video brother will you have a rebuilt video thanks

[@SouthpawAutoworks]

I'm afraid I don't understand the question. Can you please clarify? For the meantime, the positive feedback is appreciated. Thanks for dropping us a line, First Generation Garage.

[@firstgenerationgarage2803]

@SouthpawAutoworks I will like to learn how to rebuild a th400 do you have a video on that thanks

[@SouthpawAutoworks]

We actually just finished the series, yesterday. TH400 Build Series: kzbin.info/aero/PLMK9OC5NGhbgVgAwDO_rCGFF38T1LjkS7

[@josephbrandt3359]

Leaking, seeping, and dripping. Tail-Shaft housing just won’t seal. I’ve used BLACK tranny sealant on both sides of a gasket. I’ve used BLACK tranny sealant on one side of the gasket. I’ve used just the gasket without anything. All times, I’ve torqued the 6 bolts to 20 ft-lbs. I’m ready to shoot this TH-400. Any ideas?

[@SouthpawAutoworks]

That's frustrating... Hard for me to say without seeing it, in person. But... Are there any dings/dents in the mating surfaces on rear of case or front of extension housing? Are there any raised edges? If so, they will cut/damage the gasket, resulting in a leak. Or make it hard to compress the gasket correctly...depending on location of raised edge. If you don't already know, when using RTV it's super important to keep oil away from it, while it cures. Getting the mating surfaces clean, and dry, AND keeping everything clean, while the RTV cures, is a must. Otherwise the RTV is useless. That torque value is good.

[@josephbrandt3359]

@@SouthpawAutoworks I followed your instruction… I followed the PERMATEX instructions. I think I may have got it sealed now. Mating surfaces are LAZER STRAIGHT. After applying the “ONE MINUTE GASKET MAKER, I put a space heater on the areas that need to be sealed. The temperature I was able to heat up those areas to (Tail-Shaft Housing & Speedo-Housing) was 115*F… I left the heater in place for 36 hours and I know that was overkill, but it is due to my job and responsibilities. However, I will know more in a day or two. I’ll update you.

[@dakotatelles3483]

How can u check the when the trans is still in the car

[@SouthpawAutoworks]

?

[@gregburbage4954]

How do you tell the difference in the 400 and the 350 transmissions

[@SouthpawAutoworks]

There are a number of ways to tell them apart (oil pan, servos, etc). If you're interested, we can put together a short video on this topic....as time permits.

[@gregburbage4954]

Yes I am interested and you guys do a great job with your videos I appreciate it so much

[@gregburbage4954]

I have a 1990chevy truck I built a 350 and changed it over to a carburetor it has a 46L60E trans in it and it doesn't change gears because I don't have a computer in it anymore what can I change the transmission to for it to work like it is supposed to

[@gregburbage4954]

4l60e

[@SouthpawAutoworks]

A 700-R4 is almost identical to the 4L60E. But, no PCM needed to operate the trans. Instead, it's controlled by a Throttle Valve and a Governor. The governor is very similar to the TH400 governor. The Throttle Valve is located in the VB (valve-body), and is controlled by the TV Cable, that is attached to the throttle linkage, at the carburetor. Note: Some years of 700-R4 are also known as the 4L60......not to be confused with the 4L60E. At a glance, the early 4L60E and the 700-R4 look identical, from the outside. However, there are some ways to quickly tell them apart. We can put together a video on that topic...as time permits.

[@OkieMike41]

I was always told to double oring case side on pickup tube why are you saying not to???

[@coltonmcintosh7503]

Tell Andy I need his help