67 Dad/son project.

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mojo67
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67 Dad/son project.

Post #1 by mojo67 » Tue Feb 13, 2018 8:35 am

If my son and I are removing my rear axles, what should we look out for and what if any special tools do we need. We have a 67, 6 cyl. 3 spd. Manual 4 lug rear(7.25) ratio 3.20. We are looking to remove them to send them out and get replicas made into 5 lug.
I know it is probably easier to get a 8”/9” donor rear but we feel this is the best option for us right now. It’s getting harder and harder to find a donor rear that’s any good up here in upstate NY. Plus we believe we only have 47 k original miles on this car.
As always you all are a big help. Please post anything you feel necessary,
Thank you

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Firebolt
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Re: 67 Dad/son project.

Post #2 by Firebolt » Tue Feb 13, 2018 11:15 am

I have seen video of someone only drilling new holes to make it 5 lug/change of pattern. So you wouldn't even need to change oil if you don't want to. Just need some "drill jig" that can be bolted to hub. Isn't the diameter of bolt patterns the same 4.5"?

mojo67
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Re: 67 Dad/son project.

Post #3 by mojo67 » Tue Feb 13, 2018 11:34 am

From what I understand 4-lug and 5-lug will intersect with one another so when they do the work one of the holes will be a figure 8 in shape. They cannot weld it up because once welded the weld becomes incredibly hard and will cause the drill to deflect and drill the hole off center and then the patter wont fit anything. So if you need your axles to be 5 lug new axles will have to be made
This is what I’ve been told.

mojo67
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Re: 67 Dad/son project.

Post #4 by mojo67 » Thu Feb 15, 2018 6:48 am

Can't find anything online about removing the 6 cyl axles out of an 7.25 rear. Do they just slide out like some of the rears or is there a clip that holds them in ?
We are pretty sure the drums have to be removed and then unbolt the axles from the drum side, but its the center section I'm asking about? :thanks:

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bubba22349
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Re: 67 Dad/son project.

Post #5 by bubba22349 » Thu Feb 15, 2018 11:29 am

You just pull the drum and unbolt the axles 4 retaining bolts then side out the axle. Good luck :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

mojo67
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Re: 67 Dad/son project.

Post #6 by mojo67 » Thu Feb 15, 2018 4:30 pm

:thanks: :beer:

Bubba that’s what I thought.
Most appreciated

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Re: 67 Dad/son project.

Post #7 by StarDiero75 » Sun Feb 18, 2018 1:25 pm

mojo67 wrote::thanks: :beer:

Bubba that’s what I thought.
Most appreciated

I got my 7.25" on the bench. If you need someone to do a video, i csn make a youtube one real quick
--1965 Ranchero w/1966 200 and 3.03 column shift, 8" rear 2.8 (Yes I know the gearing sucks), weber 32/36, CRT Performance HEI.
--1961 Studebaker Lark VI, OHV 170 l6 in the process of being resurrected. But it lives
--Creator of the only Weber 32/36 conversion video.

mojo67
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Re: 67 Dad/son project.

Post #8 by mojo67 » Mon Feb 19, 2018 6:36 am

I got my 7.25" on the bench. If you need someone to do a video, i csn make a youtube one real quick

SD75
As long as it just unbolts from the drum side and the axles slide out, I think we are good. Maybe putting it all back together. Like the drum brakes and bearings etc....
Thanks

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B RON CO
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Re: 67 Dad/son project.

Post #9 by B RON CO » Mon Feb 19, 2018 5:57 pm

Hi, it usually doesn't just slide right out, it could be stuck pretty good. A slide hammer comes in handy right about now. If you don't have a slide hammer you can try the backyard way, which is to put the brake drum backwards, with two lug nuts very loose, and use the brake drum as a slide hammer to work the axle out. Good luck
B RON CO. Still workin' on it!

1933 Ford Pickup - 59A Flathead V8
1966 Ford Bronco - U14 - 170/200 Straight 6
1966 Ford Mustang - 289 V8

mojo67
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Re: 67 Dad/son project.

Post #10 by mojo67 » Sat Mar 24, 2018 10:41 pm

So we found a 8” rear in good shape to make our 4 lug a 5 lug instead of making axles or drilling n filling our 4 lug axles.
Here is our next question? The rear end we bought has 2.79 gears(and would like to rebuild it ) now are 6 cylinder has 3.20 gears that is in the car. We would like to be able to have around the same kind of ride. Would putting in 3.55 gears be that noticeable.
Maybe a little quicker take-off????????But also would like to cruise on highway sometimes at 60 or so!
We would be using like 215/60R15 tire or 215/70R15 tires.
Also, does anyone know what I need to attach my 67 mustang 6cyl drive shaft to the new 8”rear. Or do I need a different shaft????
???????

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B RON CO
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Re: 67 Dad/son project.

Post #11 by B RON CO » Sun Mar 25, 2018 8:30 am

Hi, measure your rear end yokes to see if they use the same u joint. Some Ford rears also may have different length yokes, long or short. Hopefully it all matches on both rears. I don't think the ratios are much different to worry about, but some guys here can do the math and figure out RPM a X MPH. I would pull an axle, tip the housing, and dump the old fluid, and go with new rear end fluid. Good luck
B RON CO. Still workin' on it!

1933 Ford Pickup - 59A Flathead V8
1966 Ford Bronco - U14 - 170/200 Straight 6
1966 Ford Mustang - 289 V8

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bubba22349
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Re: 67 Dad/son project.

Post #12 by bubba22349 » Sun Mar 25, 2018 9:20 am

Yes the 3:55 will give you a quicker take off. This will also effect your MPG a small amount depending on how much difference the tires diameter varies from stock size plus the extra .35 lower gear ratio. There are a number of gear calculators that can help you to know. Your speedometer will also need some recalibration too. Probably the easy way to go is to get a V8 drive shaft too depending on which trans you now have it might just be a direct swap having all the right u joint sizes front and rear. Good luck :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

mojo67
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Re: 67 Dad/son project.

Post #13 by mojo67 » Sun Mar 25, 2018 10:52 am

Yes the 3:55 will give you a quicker take off. This will also effect your MPG a small amount depending on how much difference the tires diameter varies from stock size plus the extra .35 lower gear ratio. There are a number of gear calculators that can help you to know. Your speedometer will also need some recalibration too. Probably the easy way to go is to get a V8 drive shaft too depending on which trans you now have it might just be a direct swap having all the right u joint sizes front and rear. Good luck
How will it effect the top speed?
I'm not completely sure of the trans. It's a 3 spd manual 6cyl. I'm hoping they only made one kind of 3spd trans for a 6 cyl., if not where would I find a tag??
And as for the drive shaft is there a tag for that also? It looks as though it is a new after market shaft
Thank You

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bubba22349
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Re: 67 Dad/son project.

Post #14 by bubba22349 » Sun Mar 25, 2018 2:27 pm

The cars top speed may be reduced a small amount depending on how much power and torque your engines is making, probably not noticeable during most of your driving. The engines RPM’s will be higher at cruiseing speeds on the hi way / freeways.

In 1967 a 3.03 3 speed trans was used behind the sixes this same trans was also used behind the 289 V8’s too. Good luck :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

mojo67
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Re: 67 Dad/son project.

Post #15 by mojo67 » Sun Mar 25, 2018 7:13 pm

Hi, measure your rear end yokes to see if they use the same u joint. Some Ford rears also may have different length yokes, long or short. Hopefully it all matches on both rears. I don't think the ratios are much different to worry about, but some guys here can do the math and figure out RPM a X MPH. I would pull an axle, tip the housing, and dump the old fluid, and go with new rear end fluid. Good luck[highlight=yellow][/highlight]
Thanks B RON CO, We are definitely changing the gear oil and seals and bearing and all shoes and hardware

mojo67
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Re: 67 Dad/son project.

Post #16 by mojo67 » Mon Mar 26, 2018 5:28 pm

The 6 cyl u-joint is narrower than the 8" rear one. We are looking for something to fit our 6 cyl drive shaft to our 8" rear. Does anyone know a solution to our problem?? Or do we have to get a new shaft?

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Re: 67 Dad/son project.

Post #17 by mustang6 » Tue Mar 27, 2018 2:25 am

Some creative people fabricate "Franken-joints" because there is no conversion joint for this application. A V-8 driveshaft would be a straight bolt-in swap if you can find one, otherwise you might have a new one made.
Scott

68 Mustang 200 ci, Aussie 250-2V head, Dual Headers, Comp Cams 252H, DSII w/MSD 6AL, T-5, V8 suspension.

65 Ranchero 200 ci, late 170 head, Autolite 1101, 3.03 3 speed, Maverick 8" 4 lug rear with 3.55 gears.

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