Thanks for this video, it really reminds me of what I cut my teeth on. We had a full service shop and would do engine rebuilding and transmissions as well. My boss was a true wizard on auto transmissions ( not of your level but still had a great wealth of knowledge), he even built his own work bench and some of the specialized tools you have. I was a clean up person first and believe me we used scotch brite pads and all parts had to be cleaned to his high standards. I did build some engines myself with great results but the transmissions were always the bosses job, he really loved that work.
Great tear down. I had a c-4 in a 73 ' Gran Torino behind a 302 2bbl. Nothing fancy,...but it kept going over 400k. Took an 18 wheeler to finally stop it.
Having built 2 or 3 of these in the 80"s was really hoping to see what kind of Sonnax improvements could be made to the ol C4! Keep the vids rolling much enjoyed!!
I recall replacing the broken band in my good friends '73 C4 302ci hot rod back in the late 70s. Yup, broken band could be replaced in the car by just dropping the valve body, and looping in the new 2 piece band!
@Precision Transmission. I’ve built motors but never built a transmission, always wanted to try and rebuild an auto trans (it was on my bucket list) but watching your videos I think it’s just above my pay grade😂. Great content, love your stuff and keep it up👍
I put a C4 with a GT350 valve body in my xke jag (olds flexplate out to the starter and sandwiched with the ford replaced the non synchro stock trans to change the clutch you had to pull the engine and wife did not like to drive it C4 was quicker than the 4 speed because the faster you went in low the longer it took to shift. Road racing prior to this we just used 2-3-4 Isky reground cams (one went flat and ED replaced) XM3 intake XM2 exhaust Isky came out with later cams but I never tried them but they looked good. Ground the adjusting blanks on the grinder V rest pushing on the side of the wheel with a dowel Later a Kenny Harmon (Harmon Collins) billet which required the lifter bores to be notched for lobe clearance what fun in the 60's
About the bushing colors, I had the faintest memory that it wasn't the same at all and started looking into it again to remember. Copper doesn't temper with color change like steel does, it makes an oxide layer with different thicknesses that form any colors you get, sort of in the same way an oil slick on water makes rainbow colors due to it's thickness. That's oversimplified but close enough. So many things are variable there's no telling, and the bushings are likely bronze anyways and I don't recall it does much but turn brown and darker. Anyways, I don't think your bushing color's directly from heat, but it might be from a reaction to the degraded dye and other additives in the overheated fluid. If the bushings were that hot the steel part they're set into would be showing some colors as well, and the seals would be crispy. Yellow brass might start leaching zinc at a little under 800F but it was nowhere near that. I hope they didn't dish the top of the drums, squeezing it together like that.
Whats youre location ive got an fmx it needs rebuild i rebuilt it my self and made the horrible mistake not replacing the converter all the metal left n the converter messed it up so i put a lower millage unit in my car
At 270F the atf starts to break down and slipping definitely starts, my thoughts would be it had to get to at least that, or even hotter. The fact it went clear suggests that it wasn't under load and slipping., just damped hot. Steel starts to go purple at 520F Somewhere in between those temps is my guess.
I think I wouldn't trust that case too much since they crammed it together. Could have hairline cracks in the back end from forcing it together. If the cooler line is blocked, would that keep fluid from getting to the bushings? Looks like it was run with no fluid or at least no fluid flow through the case, and that would roast those bushings pretty quick. The pump must have been screaming.
I wish you would share you opinion of fluids.....I understand why you won't because it is a volatile subject.......But your experience and knowledge is very important when it come to the life blood of the automatic transmission. WHAT DO YOU USE FOR FLUID RICHARD and T?
Is this an early C4? I thought early pumps had an o ring to seal instead of that gasket they had on backwards. Just pulled my badly leaking 1966 c4 and it has an o-ring on the pump AND a gasket. Going to re-seal it and am unsure if I need both o-ring and gasket in my application.
I recently was watching another channel of an old man that has a lot of knowledge of mechanics and he said back in the old days they would put Ford transmission fluid in Chevy and other transmissions because it was dryer and it would make the transmission shift harder and last longer have you ever heard of that ?
I don't understand how the pump gasket could be put in wrong as the bolt holes will not line up with the gasket. I have worked on a lot of C4s and have never seen this before.
Old trannys??? My '65 Grand Prix survivor, 72k, TH400, still operates like brand new. Even after sitting for a year or 3 in my 25 car warehouse. Doesn't even leak from torque convertor drain back!
I'm NOT a transmission tech by any stretch but am well versed in mechanical design, so I completely understand the CONCEPTS. Here's my question... A customer has a 2002 Jeep Grand Cherokee w/4.0 Auto. No matter what gear position you select, you GET the gear selected... AND it is ALSO stuck in a forward gear, throughout the entire range. It is engaged in a forward gear even while in Park. Gear selector DOES work properly, even though it is also STUCK in a forward gear (no idea which gear) Stuck solenoid or gear pack piston??? How can I PROVE?
It’s plum burnt.
I hope Richard does a build video on this C4…
my first car...tranny died at 144K so I bought a 4 speed for $125...took a week to swap in the driveway...including building the ramp. THANKS!
Your a true artist. Pleasure to watch you work. 😊
Yes you're a true artist.
Awesome video Richard and Teresa 😊
I sure miss the old days.
Thanks for this video, it really reminds me of what I cut my teeth on. We had a full service shop and would do engine rebuilding and transmissions as well. My boss was a true wizard on auto transmissions ( not of your level but still had a great wealth of knowledge), he even built his own work bench and some of the specialized tools you have.
I was a clean up person first and believe me we used scotch brite pads and all parts had to be cleaned to his high standards. I did build some engines myself with great results but the transmissions were always the bosses job, he really loved that work.
Thanks guys.Ive watched dozens of your vids.Never realized how complicated transmission are.
Learning more ever time
Great video, excellent filming, great information, thanks for sharing, all the best to yous and your loved ones
Great tear down. I had a c-4 in a 73 ' Gran Torino behind a 302 2bbl. Nothing fancy,...but it kept going over 400k. Took an 18 wheeler to finally stop it.
Richard your just AMAZING Thanks for sharing.......And we sure missed you......
Richard you're just amazing
More precision than any factory could ever hope to achieve. Love the videos keep up the excellent work. Love the puppy. 🐕
Have a great weekend guys!
Having built 2 or 3 of these in the 80"s was really hoping to see what kind of Sonnax improvements could be made to the ol C4! Keep the vids rolling much enjoyed!!
You thorough and full of knowledge 😇
You're thorough, etc.
I recall replacing the broken band in my good friends '73 C4 302ci hot rod back in the late 70s. Yup, broken band could be replaced in the car by just dropping the valve body, and looping in the new 2 piece band!
I love this channel!
How about a video of you reassembling this trans ??
Won't happen.
To long & complications
Good job Rich and great camera work by the young Lady!
Greatest respect for someone who knows what he is doing and can explain the rights and wrongs. Thanks.
Haven’t seen a C4 torn down, good video, thanks!😊
Could you do a video that details how you clean all the parts up to get ready for rebuild on any transmission?
@Precision Transmission. I’ve built motors but never built a transmission, always wanted to try and rebuild an auto trans (it was on my bucket list) but watching your videos I think it’s just above my pay grade😂. Great content, love your stuff and keep it up👍
The 4L60E is a of the more simple transmission to rebuild. alot of the 4 speeds are easier ones to work on.
Yep, Rich is the Man… I'm liking this channel
True; You never know what you're going to get...
I am convinced that Richard is to transmissions like Bubba Gump is to shrimp. He knows everything there is to know about transmissions…. Hehe
... ' ya' got C-6, C-5. C-3's too. C-4 too. : )
I put a C4 with a GT350 valve body in my xke jag (olds flexplate out to the starter and sandwiched with the ford
replaced the non synchro stock trans to change the clutch you had to pull the engine and wife did not like to drive it
C4 was quicker than the 4 speed because the faster you went in low the longer it took to shift. Road racing prior to this we just used 2-3-4 Isky reground cams (one went flat and ED replaced) XM3 intake XM2 exhaust Isky came out with later cams but I never tried them but they looked good. Ground the adjusting blanks on the grinder V rest pushing on the side of the wheel with a dowel
Later a Kenny Harmon (Harmon Collins) billet which required the lifter bores to be notched for lobe clearance what fun in the 60's
Reminds me of the classes I took at vo-tech. I learned on C4s , 727s, , powerglides and TH 350s.
Love you Annie dog❤❤❤
At least it was a clean unit to work on.
About the bushing colors, I had the faintest memory that it wasn't the same at all and started looking into it again to remember. Copper doesn't temper with color change like steel does, it makes an oxide layer with different thicknesses that form any colors you get, sort of in the same way an oil slick on water makes rainbow colors due to it's thickness. That's oversimplified but close enough. So many things are variable there's no telling, and the bushings are likely bronze anyways and I don't recall it does much but turn brown and darker.
Anyways, I don't think your bushing color's directly from heat, but it might be from a reaction to the degraded dye and other additives in the overheated fluid. If the bushings were that hot the steel part they're set into would be showing some colors as well, and the seals would be crispy. Yellow brass might start leaching zinc at a little under 800F but it was nowhere near that.
I hope they didn't dish the top of the drums, squeezing it together like that.
It's been a while since I've done a C4. I've also done an FMX.
Whats youre location ive got an fmx it needs rebuild i rebuilt it my self and made the horrible mistake not replacing the converter all the metal left n the converter messed it up so i put a lower millage unit in my car
Love to see that be taking apart and FMX
That what they call a Green Dot valve body
And the main lesson is DON'T FORCE THINGS!
I never built a c4 but guys who did weren't crazy about them back in the day. Most complained about the aluminum valve bodies
@13:16 very good catch.
At 270F the atf starts to break down and slipping definitely starts, my thoughts would be it had to get to at least that, or even hotter. The fact it went clear suggests that it wasn't under load and slipping., just damped hot. Steel starts to go purple at 520F
Somewhere in between those temps is my guess.
🐾🐾🏁🇺🇸💯🐕❤️Richard is correct ! Rust or ration on a furd !
Looks very similar to a Torqueflite 904 inside.
I have the original snapon wrench just to fit that modulator valve.
I think I wouldn't trust that case too much since they crammed it together. Could have hairline cracks in the back end from forcing it together.
If the cooler line is blocked, would that keep fluid from getting to the bushings? Looks like it was run with no fluid or at least no fluid flow through the case, and that would roast those bushings pretty quick. The pump must have been screaming.
Mystery solved as always 😊
Thankyou precision family
Wow !!! What a mess they made of that one :(
I wish you would share you opinion of fluids.....I understand why you won't because it is a volatile subject.......But your experience and knowledge is very important when it come to the life blood of the automatic transmission. WHAT DO YOU USE FOR FLUID RICHARD and T?
Do video on a Chevy Colorado 2024 transmission.
1st We're heading to the JUNKYARD view!!!
How much for a complete over haul
Can't imagine someone not spinning the shafts after they put it together, they should have known it was F'd.
Took somewhere around 400° to 450° to discolor those bushings. I'm sure your spit woulda jumped off the case if you had spit on it at that time.
Can you do a reassembly video of this C4
Won't happen.
@ Why
The amount of “new”’trans that get brought in are the reason I won’t get a trans re built.
Is this an early C4? I thought early pumps had an o ring to seal instead of that gasket they had on backwards. Just pulled my badly leaking 1966 c4 and it has an o-ring on the pump AND a gasket. Going to re-seal it and am unsure if I need both o-ring and gasket in my application.
I recently was watching another channel of an old man that has a lot of knowledge of mechanics and he said back in the old days they would put Ford transmission fluid in Chevy and other transmissions because it was dryer and it would make the transmission shift harder and last longer have you ever heard of that ?
Where is your shop located?
Is a C4 any good, or should I put a C6 in my 1965 Mustang?
Do you do fmx transmissions
I don't understand how the pump gasket could be put in wrong as the bolt holes will not line up with the gasket. I have worked on a lot of C4s and have never seen this before.
Never seen anything like that Put your touches on it and make it run again
How about building one for us to see?
Won't happen.
Where is your business located please?
Don't bother asking. He won't respond.
If I remember correctly, Amarillo, Texas
Old trannys??? My '65 Grand Prix survivor, 72k, TH400, still operates like brand new. Even after sitting for a year or 3 in my 25 car warehouse. Doesn't even leak from torque convertor drain back!
Omg that poor housing you know that thing had to off been and long way from seating before they put the ugadagus to it
Is your channel meant to be educational, or just you documenting a tear down of a transmission?
You're.
Rich fixing someone else s hackery Again.
You are a gentleman, sir! 😊
I'm NOT a transmission tech by any stretch but am well versed in mechanical design, so I completely understand the CONCEPTS.
Here's my question... A customer has a 2002 Jeep Grand Cherokee w/4.0 Auto.
No matter what gear position you select, you GET the gear selected... AND it is ALSO stuck in a forward gear, throughout the entire range. It is engaged in a forward gear even while in Park.
Gear selector DOES work properly, even though it is also STUCK in a forward gear (no idea which gear)
Stuck solenoid or gear pack piston???
How can I PROVE?