I can now with confidence tell folks my truck has a 9 inch rear. Bravo and thank you sir!

It's people like you that make the internet a working environment. I think your video is extremely useful. Thanks and keep on rocking that feelin good feelin.

Very good straight forward explanation. Why there are any thumbs down is strange.

thanks in the early 1970s my Dad drove a 67 Mustang Fastback 289 Automatic and he had our garage littered with Ford Rear ends. he bought out of junkyards all from different Ford models that had different gearing in them he would come home from work eat dinner then go into our garage to swap the rear ends in the family car to try and make it a little faster ! he often. ran around with. a stopwatch and was checking times with the family in the car on rare occassions it was just him and I in the car and as a boy i thought it was cool most especially when he laid Rubber on the road !

Thanks for the reminder guys. Just realized our rust free 65 coupe that is for sale has an 8 inch. Would of preferred a 9 of course but I will happily give that up for lack of rust.

your points made are so extremely helpful !!! its no wonder you have almost 100,000 views ! :-) remember when such information was only available if you happened to ask the right (old) guy at the local swapmeet when it came to town ??!!! My hat is off to the hotrodders of the 70's and 80's !! (let alone the giants of the 50's and 60's) --- they kept the secret stream of knowledge alive or they had to dig and dig just to find a starting point and they still made 6 seconds... (-:

Thanks for this info, I just got a '64 Ranchero and this helped me id the rear end.

Excellent thanks. Very helpful. Just came across a 57 Fairlane skyliner. Now I know what I have.

Thank you you really help me out. now I'm looking for 3.00 gears lol

well done- good points- easy to follow

Great Video and information. Thank You!

thanks for the info I am going to look at a rear end tomorrow ...Now I know

You save my time. thanks

Thanks for the help, exactly the information I was looking for.

@AxelPowersGarage

3 жыл бұрын

Glad I could help

Early 9 inches had a rear cover similar to an 8 inch

Great job guys

Great info, thanks brother!

Great Video. Thanks for sharing

Did not know Ford made a drop in that wasn't a 9". Learn something new everyday.

Good info THANKS!

Thank you much.

Thanks for your brief informative answer, " if a deep well socket fits the bottom two nuts you don't have a 9" ford"!

@AxelPowersGarage

6 жыл бұрын

You cannot get on the bottom nuts with any socket. You need a box end or open end wrench to remove the two bottom nuts on a 9".

LOL If you can get a socket on the bottom two punkin bolts under the driveshaft...itza EIGHT. Both 8 and 9 light duty rears had horizontal webbing only. They also had light duty guts. The last year of production was 1965. These are both OLD rear ends.

Great video. Thanks.

THANK YOU FOR POSTING

@MidlandTexan

3 жыл бұрын

Thank you for commenting Tiberius.

Thanks man!! Perfect

very good video thanks!!!

Great information. Thanks

@AxelPowersGarage

3 жыл бұрын

Glad it was helpful!

Thanks I got it now 👍🏻

thanx for sharing

cool. good info.

Please add the 9” Ford rear end has different axles The 9” has round dimples or indentations on the outside ends. 8” axles have a D shaped space at the outside end.

very useful thanks

It doesn't matter whether you use a deep socket or a standard socket. You cannot use any socket on those bottom nuts. You have to use a wrench to get on those nuts because of the shape of the center section casting.

good info

Thank you

Great video was trying to figure out my rear size on my 1966 Galaxie thanks!

@AxelPowersGarage

4 жыл бұрын

My guess would be a 9" in that big car. There is a Web site called fordification.com that you could probably verify that.

@firefightingvet9181

4 жыл бұрын

Axel Power Garage thanks will do. There is a good possibility it’s a Galaxie Police sentinel equipped with a 289 but can’t get a Marti report for pre 1967 vehicles so I have to go off of the car data tag

Thank you...

Thanks for the great information I assume I have a Ford 9in my friend told me it's probably out of a older model Lincoln he said the truck Ford 9-inch or 31-spline I took mines apart and it end up being a 28 spline I guess the guy I bought it from lie to me

Thanks pal

thankyou

Yes. The basic housing on 8" and 9" diffs is the same for all years of production.

@pvcarmon1

5 жыл бұрын

Best 9 inch identification video I have seen so far. Another thing an 8 inch can be moved around by one man and a dolly a 9 inch requires an engine hoist and an extra guy to push.

Some of the 8" rears have vertical ribs in the front also. Not just the horizontal ribs like this one in the video. The stronger 8" rear center sections have a waffle pattern rib section, probably out of a truck or Bronco.

@AxelPowersGarage

8 жыл бұрын

Thank you for your input on this. I am by no means an authority on this subject and anyone that has any more info to add to this is welcome.

@bfnfedboy2

7 жыл бұрын

reef lx good to know this as I was confused. I'm new to Ford vehicles and my rear diffential looks like the 8" on one side but has that waffle look on the other. Either way, to the op, the video was very helpful.

Thanks. Now time to crawl in the weeds to see.

It also looks like the fluid fill plug is in a totally different location.

First gen Nine inch diffs have a smooth round back aswell looks like a 8 inch

@garyaddcox8274

5 жыл бұрын

The first gen 9" Fords circa '59-'59 are probably all gone by now. The '58-'59 Edsels also had the narrow 9".

Excellent video, thanks! I read somewhere that 9" diffs have 12 bolts on the front cover, and 8" have 10 bolts. Is this correct?

@AxelPowersGarage

9 жыл бұрын

Both the Ford 9" and 8" diffs have 10 bolts. GM diffs of the same era however, are rated as a heavy duty having 12 bolts and a more common standard diff having only 10 bolts.

@VinzentDk

9 жыл бұрын

That cleared it all up, thanks!

Would have been nice to hear what size socket for the go / no go test. I Appreciate the video.

@mtnfordman

7 жыл бұрын

the nuts are 9/16 and the length of socket that I was using was 1and 3/4

@scotthill5968

6 жыл бұрын

he’s saying if you can get a deep well socket in there on the bolt it’s an 8” rearend.

@AxelPowersGarage

6 жыл бұрын

The point is that you can't get any socket on those two bottom nut because of the design of the carrier housing. You have to use a box end or open end wrench to get on those two nuts.

@pawpatina

6 жыл бұрын

some people are just too dumb.

Great information! Would the two axles be interchangeable on a Crown Vic, Grand Marquis and Lincoln Town Car?

@AxelPowersGarage

7 ай бұрын

The 9" would be the best choice for the full size cars. The 8" is intended for smaller pony cars and mid size cars.

@shanerichardson9568

7 ай бұрын

@@AxelPowersGarage I definitely agree, my question is will it be a straight swap or will it have to be cut and welded?

@AxelPowersGarage

7 ай бұрын

They do come in different widths and the mounting hardware varies depending on the type of suspension. If you can find a diff from the same car you are working on, it will be a simple bolt in application. All the information can be found on the tag. Check a web sight called fordification.com for more information.

Man when he said the 9 inch was a little bigger than the 8 inch I damn near shit and pissed myself due to the sheer shock!

@AxelPowersGarage

4 жыл бұрын

Depends.

Buy a Ford 9 "differential with a 3.00 WDD-B identification plate that according to this code corresponds to a 1965 Mercury, I want to install this differential in a Jeep Cherokee. Here are my questions: 1- Is it a Ford 9 "or is it a Ford 8 3/4", is there this differential? 2- Is it a Ford 9 "with a ring diameter of 8 3/4"? 3- It has a ratio of 3.00 and the shafts have 28 splines. I want to modify it to use a 4.11 ratio with 31 spline shafts. What do I need to change in order to update it?

@AxelPowersGarage

2 жыл бұрын

That is not a 9 inch. It is an 8 3/4 inch. I don't know if a 4.11 gear set is available for that. There is an abundance of after market parts available for the 9 inch. Also check the width before you attempt to install it in your Jeep. Here is a link to the information that should help. www.fordification.com/tech/rearends_ford03.htm

@larrywarren1049

2 жыл бұрын

I thought about doing this since i also have a 9" under my 70f100 and finding a good solid 44hp for front but pretty hard to find a 44 apparently they made of gold so maybe the 9 will fit under the 67 stang

Hey Lance, thx for the vid. Could you help me out with some dimensions on the 9 inch Ford? I need to know what the measurement/distance should be from the ring/pinion carrier assembly (aka. third member or "drop out') mounting surface (where the carrier assembly bolts to the axle housing with the ten bolts) to the axle/bearing centerline (minus the gasket), and what the measurement/distance is from the same mounting surface to the front of the pinion support mounting surface (minus the gasket). Can you help? Thanks!

@AxelPowersGarage

9 жыл бұрын

I don't go that deep into these diffs. Check with an experienced builder.

@MrSpazoid7777

9 жыл бұрын

Already have ...at least a couple of them ...but but can't get a response. I've also went through at least 8 - 10 different repair/rebuild/shop Manuals,by various publishers and can't find a reference to these dimensions anywhere. But thanks for the reply anyway. If you have an empty carrier housing and a simple ruler or tape measure,you can eye-ball the axle/bearing centerline.to get the first measurement.

I have an axle here that has the extra rib running down the front of the other ribs... but has dimples on the back and the flat top and bottom on the housing and the bottom bolts can take a socket straight on...... so its 8"??

@AxelPowersGarage

5 жыл бұрын

If the socket will go straight on the two bottom nuts, I would say it's an 8 inch. Check the tag if it has one.

@pawpatina

5 жыл бұрын

no tag on it, did some googlin and found out the 8" AFTER 1967 has a vertical rib on the front to add strength (I think they learned that from the 9") so I clearly have a post 67 8"... damn what a bummer. only paid $175 at least...

@pawpatina

5 жыл бұрын

thanks for the quick reply!

I see that the are sealed on the back without bolts to take off the cover to expose the gears mine is the same how do you change fluid ive been looking all over the internet

@AxelPowersGarage

6 жыл бұрын

Neither of these had a drain plug. I guess Ford figures you only need to change the oil if you break it. Maybe if you loosen the nuts on the pumpkin it would probably drain it. Otherwise , I don't really know of any other way to drain it.

Does the 9 inch directly fit in a 65 mustang? Or do I need to make changes to the structure? Thank you!

@AxelPowersGarage

Ай бұрын

Most 9" diff may be too wide for a "65 Mustang, but some earlier ones may fit without narrowing them. Check this web sight . It can tell you more than I can. www.fordification.com/tech/rearends_ford03.htm

♥️♥️♥️♥️♥️♥️👍

What type of car did the 8 inch rear end come out of? I have one of those pumpkins and am trying to figure out what its from.

@AxelPowersGarage

6 жыл бұрын

The 8 inch came out of a '67 Falcon with a 289 engine.

if i have a car that has an 8 inch in it and i want to swap it out for a 9 inch, will it fit up the exact same or will i have to make altercations?

@AxelPowersGarage

8 жыл бұрын

If the 9 inch is from the same year make and model of vehicle, it should bolt right into your vehicle. Otherwise, be prepared to make some alterations.

Could you tell me what the 9" shown in your video came out of? Thanks.

@AxelPowersGarage

6 жыл бұрын

Mid to late '70s Torino, Cougar, Elite, LTD II, and Montego

@cdnpont

6 жыл бұрын

Thanks so much. Trying for figure out what we have in our rat rod truck. Saw the upper arm mounts and the shock mounts were the same, so bingo! Cheers.

I notice the 8" has a plug in the rear center, and the 9 does not. Mine does not, so is that another way to tell the difference?

@AxelPowersGarage

6 жыл бұрын

Not a reliable way to tell. Both 8" and 9" had fill plugs in the back in other production years.

I have a 67 f100. Could it have an 8inch rear??? I see its shorter than the front

@AxelPowersGarage

6 жыл бұрын

It should be a 9 inch. Pre '73 diffs are narrower than '73 and up. Yours should be around 61 1/2 inches wide not including wheel studs.

I cannot find a axle vent bolt that fits my new hydraulic brake hose anywhere for my 84 8.8 rear diff. The old one(vent bolt) is too short. I got the same hose twice from two different stores so the hose is right. The old vent bolt must be a replacement. Any suggestions for a new one over 2inches long besides the junkyard?

@AxelPowersGarage

3 жыл бұрын

I'm not very familiar with the 8.8 axles and I haven't heard of this problem before. I'm thinking the short bolt isn't the original for that diff. Is the ID tag still on the rear end so you can confirm that it is an '84? I use fordification.ccm to check tag info. Sorry I can't be more helpful on this issue. If I find something, I'll get back to you.

@AxelPowersGarage

3 жыл бұрын

It appears that fordification,com doesn't cover 8.8 axles. A wrecking yard may be a viable option.

@Flint-Dibble-the-Don

3 жыл бұрын

@@AxelPowersGarage problem solved with a little bit of grinding. Thank you for your responses.

hi guys i have just got a 49 merc and have been told the diff in it is a 9'' the front is definitely a 9 '' but the housing looks like the 8 '' at the back with the filler hole in the back ..any ideas cheers Richard ..nz

@AxelPowersGarage

9 жыл бұрын

+Cheyenne spencer Check the tag info on the fordification website or try the socket test. Looks can be deceiving when looking at it from the bottom under a car.

@SuperKONR

8 жыл бұрын

+Cheyenne spencer Early pre-1967 9 inch housings didn't have the hump like in this video, they had the fill plug in the back just like the 8". If it's rounded then it's an early 9 inch. In case you haven't found out already...

Is this for every year model?

@AxelPowersGarage

9 жыл бұрын

To the best of my knowledge, yes. The basic design of the center section remained the same throughout their production run.

Hii,,, what year is the 8.8 diferencial ❓

@AxelPowersGarage

Жыл бұрын

Neither of these are 8.8. That is a newer axle that replaced the 9".

Are they the same width?

@AxelPowersGarage

5 жыл бұрын

No. The 9" is a fair bit wider than the 8". Only because the 9" came out of a '75 Torino and the 8" came out of s '67 Falcon. The Torino is a bigger fatter car with a 351C in it. Falcon, a 289 car.

@AxelPowersGarage

5 жыл бұрын

No. This 9 inch was wider than the 8 inch, but both diffs do come in different widths.

Also there are 9inchs with out the hump.

@mtnfordman

7 жыл бұрын

Yes Sir, I have just discovered this also. I have a 64 f100 that is a little confusing to identify with just looking at the housing. I can only tell for sure by the socket procedure on the two lower studs. I cannot get a socket straight on these nuts. The truck was a factory 6cylinder . Did they put 8 inch in pickups in 1964 ?

@AxelPowersGarage

6 жыл бұрын

I don't know if they ever used an 8 inch in any pickups. Check www.fordification.com/ if you need to find out.

Can anyone tell me what Ford cars came with 9"?

@AxelPowersGarage

3 жыл бұрын

Usually Ford full size, mid size with big block engines, and half ton pickups are most common. Production years are from 1957 to 1986.

What size come in a 1969 F100

@AxelPowersGarage

2 жыл бұрын

9" narrow F100 version.

You forgot the most obvious telltale sign of all the dimples in the back of the 8 inch.

@AxelPowersGarage

6 жыл бұрын

That 9 inch has those dimples too, but not as prominent.

@coltsfan79

6 жыл бұрын

true, the problem is there's so many variations of both these rear ends, i've seen both max. ribbing and then min. ribbing on both. I would like to find an early 70's 4 lug 8 inch used in the Maverick to put under my 62 Comet.

how about light duty 9" and heavy duty 9".. lmao

@AxelPowersGarage

5 жыл бұрын

Small block, big block.

Phone #

Thank you