I have a tag - can anybody help identify specs on this 8"?
WFK-J 6BD
3L00 8 248D
http://www.fordification.com/tech/rearends_ford08.htm (http://www.fordification.com/tech/rearends_ford08.htm)
WFK-J: 75-76 Mustang
3L00: 3.00:1 limited slip
Mike
Thanks Mike!
Limited Slip! Hot Cookie!
here's another question...
If I have a 79 4 speed with a stock 3.75 and I swap in this Mustang II 8" will I have to get a new drive shaft? or will the one currently in the Pinto work?
also I think I recall some options for junk yard aluminum drive shafts that will work for a Pinto but can not recall what cars they can be found in?
THE ALUM. DRIVE SHAFT IS FROM A AWD AEROSTAR VAN BUT WILL ONLY WORK WITH A 5 SPEED!!! THE LENGHT IS TOO SHORT BY ABOUT 2-3" TO WORK IN A 4 SPEED BEEN THERE WASTED MONEY ON THAT!! WOULD THINK YOUR DRIVESHAFT FROM YOUR CAR WILL WORK WITH THE 8" REAR END!!
Thanks Bbobcat75... I have a 6.75" pinto rear and that 8" both pulls and plan to do some measuring tonight, just wondering if someone has done this swap with a MII rear and knows for sure.
I HAVE NOT DONE THE SWAP MYSELF BUT HAVE SEEN ON HERE THAT THE GUYS SAY THE MOUNING PLATES ARE IN DIFFERENT SPOTS AND HAVE TO BE CUT AND RE WELDED SO NOT JUST A BOLT IN JOB AND LITTLE FAB WORK IS NEEDED FROM WHAT I HAVE READ!!
GOOD LUCK
the 8" I have was already installed in an 80 Pinto I scrapped, I will measure and compare the mounting plates too later tonight. I always thought it was the same and just the rubber insulators were different...
The rubbers should be the same. I was told the only difference was the brake cable length. I've seen a couple posts lately about differences but I'd like to know the truth. I have 2 MII housings at home.
anybody have a quick link/know where to purchase new rubbers?
Hi Cookie,
Check this link out: [size=78%]http://12.200.47.68/itemdy00.asp?GEN0=&GEN1=&GEN2=&GEN3=&GEN4=&GEN5=&GEN6=&GEN7=&GEN8=&GEN9=&TRAN85=Y&T1=1624+01&dep_key1 (http://12.200.47.68/itemdy00.asp?GEN0=&GEN1=&GEN2=&GEN3=&GEN4=&GEN5=&GEN6=&GEN7=&GEN8=&GEN9=&TRAN85=Y&T1=1624+01&dep_key1)[/size]
These are supposed to work.
Dennis
That's the link I was gonna post. My new ones came from there but I need to order 2 more. I didn't realize I need 4 when I bought them.
Thanks Dennis! I'll be getting some of those :)
Quote from: dennisofaz on June 18, 2013, 12:31:48 PM
Hi Cookie,
Check this link out: [size=78%]http://12.200.47.68/itemdy00.asp?GEN0=&GEN1=&GEN2=&GEN3=&GEN4=&GEN5=&GEN6=&GEN7=&GEN8=&GEN9=&TRAN85=Y&T1=1624+01&dep_key1 (http://12.200.47.68/itemdy00.asp?GEN0=&GEN1=&GEN2=&GEN3=&GEN4=&GEN5=&GEN6=&GEN7=&GEN8=&GEN9=&TRAN85=Y&T1=1624+01&dep_key1)[/size]
These are supposed to work.
Dennis
Measure and compared.... everything looks exactly the same! Yea!
1975-76 Mustang Rear - 3.00:1 limited slip
vs.
1980 6.75 Pinto Rear - 3.08:1 one wheel wonder
That saves me from doing it this weekend. Did you measure the E-brake cable? MII is supposed to be 3"+ longer & should be the only difference then.
e-brake = no I didn't, I'll have to look into that
Hi,
Years ago i did the 6.75" to 8" swap and the parking brake cable mounting hole in the backing plate was bigger in the 8". Can you check the hole size to see if they are the same. If not Rock Auto has the Mustang II cable that will fit into the 8", but the overall cable length is 6" shorter than the stock Pinto cable which might be a problem.
Dennis
When I put a MII 8" under my '77, as far as I could tell, it had the same brake shoes, cylinders and drums as the 6.75 that was in my Pinto and freshly rebuilt. So I merely unbolted the original brakes from the little axle, not breaking open the hydraulics, then pulled it out and bolted the 8" in. The 6.75" brakes bolted on to the 8", so no worries about parking brake cables.
Mike
Quote from: Mike Modified on June 19, 2013, 12:33:45 AM
When I put a MII 8" under my '77, as far as I could tell, it had the same brake shoes, cylinders and drums as the 6.75 that was in my Pinto and freshly rebuilt. So I merely unbolted the original brakes from the little axle, not breaking open the hydraulics, then pulled it out and bolted the 8" in. The 6.75" brakes bolted on to the 8", so no worries about parking brake cables.
Mike
I was online last night checking part #'s for drums, shoes and brake parts... all were the same MII vs Pinto. I will look into the e-brake cable hole tonight.
same here, used the origonal brakes complete on the 8"....did it just as mike did..
Wheel cylinders are the same as well. I had a set for my 8" already & they went right on my 6.75" in my wagon a few weeks ago. The Bendix spring kit for the 8" was an exact match as well.
Maybe Ford did things different in later years, but my '73 6-3/4" had a different sized brake drum center hole than the 8." When I got my rear end I was thrilled I had opted to spend the extra $10 and get it drum to drum. It was only after the fact I found out the center holes were different. As I recall the center hole in the 6-3/4" was smaller than the 8."
In the end it didn't matter. I welded the 6-3/4" into the Turbo Coupe so it could be hauled away. Then I recouped the cost of the 8" by selling the 8.8 from the Turbo Coupe!
Tom
Quote from: Wittsend on June 19, 2013, 04:26:28 PM
Maybe Ford did things different in later years, but my '73 6-3/4" had a different sized brake drum center hole than the 8."
Tom
yes, this is true... 71-73 are different and the wheels from them will not fit on 74 and up axels because of that center part :)
[quote author=dennisofaz link=topic=22533.msg137963#msg137963 date=137161723
Years ago i did the 6.75" to 8" swap and the parking brake cable mounting hole in the backing plate was bigger in the 8". Can you check the hole size to see if they are the same.
Dennis
Dennis, in this case with the 1975/76 Mustang II 8" rear I'm putting into the Bobcat I was able to measure the E-brake hole and it's the same as the hole found on the 6.75" I pulled from an 80 Bobcat parts car. I will be able to reuse all brake parts and the E-brake cable too.
The only difference I have found between the 2 rears is the breather valve. On the 6.75 it's on the pass side/top of the pumpkin and on the 8" it's a hollow bolt to hold down the brake valve with a rubber hose attached for the breather. There was a piece of tubbing attached with a bend so it would point down on the 8" rear end breather
Hi Cookie,
Thanks for the information. I bought a new breather/brake distribution/hose for a pinto, the old ones hose was cut, and it is good to know that the breather hose can be made to work. I i put on new brakes this year and I am glad to hear that all the parts, with the exception of the drums, will work.
Dennis
? ? ? in my case with the MII 8" rear end.... all parts will work for the swap - drums, pads and all hardware. Why wouldn't the drums work for you?
Help! Ideas? Suggestions
the breather for the 8" rear end has the threads stripped. Not inside the rear, that looks good but the breather that screws into the rear end and holds down the brake line block has very little tread left and will not hold down tight. I've been to the parts store and they look at me like I'm nutz thinking this is a part that can be ordered... so I'm looking for ideas? suggestions? on a replacement?
I see a hose clamp and a piece of broken hose that the arrow is pointing to???, what threads are you talking about??..
use some other means to tighten the brake lines in the block then simply use some JB weld on the rest of the threads to hold the block down ... it does`nt have to be that tight ....
Quote from: 74 PintoWagon on June 24, 2013, 10:56:52 AM
I see a hose clamp and a piece of broken hose that the arrow is pointing to???, what threads are you talking about??..
it would look something like this when not attached to the rear end
Quote from: HOSS429 on June 24, 2013, 11:28:32 AM
use some other means to tighten the brake lines in the block then simply use some JB weld on the rest of the threads to hold the block down ... it does`nt have to be that tight ....
I've considered that Hoss429 and I agree it's an option when nothing else can be done.
Ok that's no biggie then, quick way is like HOSS said just epoxy it in there, it won't go anywhere.
The links below show 60's Mustang fittings. The stated thread size of 7/16"-20 and hose nipple size 5/16" are the same sizes as the Mustang II. The Mustang II fitting measures ~1-1/4" from the bottom of the nut to the end of the threads. Maybe call them and ask for a measurement. The longer one looks to have similar proportions to the Mustang II fitting. Good luck.
http://www.laurelmountainmustang.com/products?utf8=%E2%9C%93&taxon=&keywords=axle vent (http://www.laurelmountainmustang.com/products?utf8=%E2%9C%93&taxon=&keywords=axle%20vent)
http://www.npdlink.com/store/catalog/Mustang_Rear_Axle-429-2.html (http://www.npdlink.com/store/catalog/Mustang_Rear_Axle-429-2.html)
Thanks for the links Oldkayaker, I didn't get home from work early enough to give them a call for that measurement. I measured mine and it is 1-1/4 like you said, I sure hope they can or will have the measurement available.
Quote from: oldkayaker on June 24, 2013, 02:07:11 PM
The links below show 60's Mustang fittings. The stated thread size of 7/16"-20 and hose nipple size 5/16" are the same sizes as the Mustang II. The Mustang II fitting measures ~1-1/4" from the bottom of the nut to the end of the threads. Maybe call them and ask for a measurement. The longer one looks to have similar proportions to the Mustang II fitting. Good luck.
http://www.laurelmountainmustang.com/products?utf8=%E2%9C%93&taxon=&keywords=axle vent (http://www.laurelmountainmustang.com/products?utf8=%E2%9C%93&taxon=&keywords=axle%20vent)
http://www.npdlink.com/store/catalog/Mustang_Rear_Axle-429-2.html (http://www.npdlink.com/store/catalog/Mustang_Rear_Axle-429-2.html)
I called for a measurement bottom of nut to bottom of threads and it's 1 and 1/8" - the one I have is 1 - 1/4 with a thick lock washer so maybe with a really thin lock washer? ? ? will have to measure and check tonight to see if it might? work?
http://www.laurelmountainmustang.com/products/1965-1966-mustang-axle-vent-hose-fitting
ok... so here's a recap
the 8" rear from a 1975/76 rear was a perfect swap into the 79 Bobcat
all hardware from the 6.75 rear swapped over to the 8"
* Drums, Shoes, Springs, ujoint, etc... everything
* Emergency Brake Cable fit and works
for the breather I removed the thick washer and that gave me just enough threads to feel comfortable to reuse the one I had. The links others provided for the Mustang replacement part should have worked but I did call for a measurement from the bottom of nut to bottom of threads and the replacement part was 1/4 inch shorter but I believe it would have worked. Quite a few Mustang II people also confirmed that is the part they used when needed