How To: Set Proper Endplay in a Ford C4 Transmission 

Good deal Andy. Looking good. Been building my own C4s for 30+ years. My 7 yo and I tearing mine down and going through it and putting it back together. Good luck and get R done.

You never leave anyone hanging! Great job!

Good morning to you and I hope that you have a great day today. I know that you will get it the way you want it. If anyone has the patience it is you. Of all things I know that it can get seriously frustrating sometimes, but I believe that you have the knowledge to get it the way you want and need it to be!

The best part is that you lay it out there and you are going by a Original Manual and the rest is from your years of experience with help of other professionals and mechanics to get it right, if there was something wrong you or one of your friends would figure it out. I'm going to take your opinion on it for the point that you have been running the same transmission for years and you still have it, maintain it, and are able to continue to use it for what you need it to do. I would say that you have a good idea of what you are doing and it still works. Great day to you and thank you for sharing this with us.

Nice job Andy!👍✋🏻

According to Form 7644-65 page 52 "It is no longer recommended that when a No.1 or No.2 thrust washer requires changing that both be changed in pairs according to the table at the top of page 93 in the C4 manual". (Form LM-7644) Form 7644-65 page 52 goes on to tell you that to check the end play of the No. 2 thrust washer first as shown in Form LM-7644 then determine the correct thickness of the number No. 1 thrust washer next as shown on page 52 of Form LM-7644-65. This change in procedure back in 1965 has screwed up a lot of people including myself in trying to set the No.1 and No.2 thrust washers in a C4. I think even the engineers at Ford were confused. Some C4 books and videos tell you to select the washers in pairs and other books and videos tell you to select them separately. The idea of changing both washers in pairs was stopped back in 1965 and it was then shown to set the end play of the No, 2 thrust washer (bronze) first before setting the thickness of the No. 1 thrust washer. (plastic). I hope this clears up the procedure to select the correct selective thrust washers in the C4. But probably won't. 🙄

Another great series Andy! Very good info here.

Good Job Andy on the explanation. :) Couple points , those washers never work out in pairs , just need to use what you need to get it right . Select the #2 for correct endfloat and the #1 for a nice snug fit .. Also with case laying on its side like that should of held some pressure on the input shaft when zero'ing the dial gauge . Looking at it there was about an extra .005" in the endfloat.. Still ok at .017" but just so you know . If the transmission was on a stand upright then it would stay pretty much zero .

Thanks andy. Yeah you really gotta know how one works, what each thing does and what you dont want to happen. Thanks for the tips👍

I never done s c4 . Years ago I rebuilt a few 350 and 400 transmissions when I worked for gm . That was when I got out of a auto and diesel tech school.. I don't like warranty work and I finally said I done here . I remember once my brothers jeep had a 400 turbo he had a failure and had it fail after he was on the way home . So he and I pulled it out and rebuilt it . That's was in I think 78 lol or 79 . We went to a salvage yard to get a front pump as his was bad. We found one that was in good shape . We got the transmission back together and seems like we added a shift kit . Worked OK. I not a expert on them . Never had a 400 in a hot rod . My brother had a power glide in his Nova and the Integra. I know most want agree but I ran 10wt in my transmission in my old 12 valve a 95 4x4 for 20 plus years . Finally the transmission let go at 215k miles on it . I replaced it with a g56 transmission. Thanks for the videos

Good info Andy! Thanks!

another info-filled vid.

Looks good Andy. 😎

cheers mate!

This looks soooo much different than I remember... Than I was thinking... Wow.. ok .. I get what I'm looking at now

Andy, subscribed sometime ago but had to ask after you, David and Uncle Tony got together on video Saturday! Thanks!

Nice job!

I think the C4 will live in your truck, but if you need more trans go for a C6. Dynamic can build C6 to live with very little modification.

Disclaimer: No Chinese measuring tools were used in the making of this video.

Put a Gear Vendors on the back of the 400 might help move the Big Truck Faster and easier

I still think a lenco better suites casper but its just my taste. 🙂

I have had major problems putting mine together for a while now. When I go to tighten the pump, everything binds. I ja e tried a green, yellow, and zero #1 washers... I tried two pump gaskets, and I have tore apart this transmission so many times I can do it in my sleep. Please help! Thanks. Desperate in Michigan lol

No T400 goes in Casper. Casper gets a C6 !

Andy do you still have to do a video on jet mods for the carter 2 barrel ? I just watched David's video on the mods we are doing . crazy how you David and me think alike when doing these mods to increase cfm. I'll be posting a video soon on the mods I have done and will be doing

Good video . What is the spec in thousandths that you are looking for

4L80 will hold 1500hp or more and is basically a turbo 400 with overdrive. Street Outlaws use a version of it in their 3000hp plus cars. If the powerglide can be adapted to a ford engine so can the 4l80

what would be the price to build that c4 with the roller set up and machine work

Hey man good video an feat detail, I have a quick question, I have a stuck input shaft, what is the length I have to go through to remove it, I really don't want to bring it to a shop, I was only trying to replace a few leaking seals and I ran into that, thanks in advanced!

Why don't you go with c6

Were the clutch packs soaked in transmission fluid before assembly or just installed dry, and if dry would filling the trans with fluid soak the assembly well enough?

I know nothing about transmissions

You said 11 and a half .. to 12 thousandths. But what is the correct amount

Why not a C6 for your truck ????

WHAT IS THE FLUID TYPE YOU USE IN THEESE FORD TRANSMISSIONS

WILL A C4 LIVE IN A 500 HP 1972 FORD GRANADA

To bad that the aftermarket didn't make all the billet and 300m parts like they do for the GM, I believe that the C4-C5 transmission is every bit as strong as the powerglide, but Ford gets little to no help from the aftermarket

So why no bronze washers? Also I thought that you were thinking about a Lenco🤔? 🤷‍♀️.

Did you guys give up on the mission impossible 318???

So you are setting it to rest on both spots the same.

500... And up... Up to what. Like 650..

Personally I blame squirrels......

@kustomdeluxe8489 say it right. China👌lol AWWOOO 🤙🏼