9 inch conversion question??
 

I'm currently in the process of trying to swap the 12 bolt in my 67 c10 to a 9 inch and I'm trying to figure out what years and models of Ford vehicles had a 9 inch with the closest dimensions to our truck 12 bolts? I was told that the 9 inch from a late 70's Lincoln is close, but are there any others?

Thanks in advance!
Zak

Re: 9 inch conversion question??
 

I'm putting my 2nd 9" in the truck now. This one is from a 72 torino. It's within an inch of the stock 12 bolt that was in the truck. The first one I put in had a way offset pinion (to the passenger side) and I didn't like how it had my 1 piece driveshaft angled. The first was pulled from a 77-78 bronco. It's about 3 inches wider.

Re: 9 inch conversion question??
 

Ok sweet, I've got some leads on a few rear ends, but I was trying to get an idea of what year 9 inches would be the easiest to swap in.

Thanks dinnut!

Re: 9 inch conversion question??
 

I think Moser makes a direct bolt in now, although as you may suspect, easiest or strongest will never equal cheapest.

Re: 9 inch conversion question??
 

The first one is a truck housing.

What I started with and narrowed one side to center the pinion. Also had 3.25 tubes.

Re: 9 inch conversion question??
 

I've looked at the moser packages, and I'm trying to decide if it's more worth it to go ahead and just order a complete rear end rather than modify an old 9". Does anyone know what the general price difference would be between buying a new moser unit and building an equivalent strength used 9""? This truck will primarily be street driven with occasional track use, but I want the rear to be able to handle just about whatever I throw at it.

Re: 9 inch conversion question??
 

The cost of narrowing an original 9" housing depends on how much of the dirty work you do yourself. If you just drop off a complete greasy dirty differential with all the original brackets, for someone to narrow, it's going to cost 'ya. At least that is the way it is in my shop.

Re: 9 inch conversion question??
 

I have done a bunch of rears for folks and one of the things we saw was bent housings. A few bent from the demise of the donor but most bent from the welding that was done one it. A set of axle tube will move a bunch when you weld on them. So we always put the ends on the housing last after all other welding was finished. Had a 2" ground piece of bar stock that went in the housing to center the ends true with the center section. This made for very easy axle installs and a car that would roll straight and easy. This is the advantage of the Moser housing over a doner and doing a bunch of welding on it.
Jimmy

Re: 9 inch conversion question??
 

I ground the weld on the center. Pushed the longer tube in 2" to center the pinion up.
Low budget but...

Re: 9 inch conversion question??
 

My Moser fab 9" with 35 spline axles and Detroit locker.. cost was around 3400.00

Re: 9 inch conversion question??
 

Pics

Re: 9 inch conversion question??
 

That's a good looking rearend!

Re: 9 inch conversion question??
 

Thanks for the pics Vidman, that looks great for 3400. Did that price include the cost of the drum brakes as well?

Re: 9 inch conversion question??
 

I used my stock 12 bolt drum brakes. also had 35 spline axles, Detroit locker,Daytona aluminum pinion cover,tapered bearing upgrade, backbrace, 1350 yoke and 3.25 ratio. When bolted it in I ended up with a 3 degree up pinion angle which works out perfect with my 3 degree trans down angle. Very happy with the purchase..:chevy:

Re: 9 inch conversion question??
 

I just acquired a 58 inch wide 9 inch rear. I believe it came out of a Torino and narrowed due to the thick wall flat top tubes and flange bolt pattern. It has 31 spline Moser 5x5 axles.
The question I have is due to the thick walled 3.25 inch housing will this be a big issue doing a swap into a trailing arm 68 with a stock 3 inch 12 bolt housing? Any info would be appreciated.

Re: 9 inch conversion question??
 

I don't think you should have any problems. With installing a 10.5" 14 bolt, most guys will grind a small notch in the axle tube for clearance for the U-bolts. The 14 bolt has 3.375 diameter axle tubes. You could use the 14 bolt trailing arm mounts that I make for that 9" housing.

Re: 9 inch conversion question??
 

While your working you might consider a disc. conversion like the inexpensive one I recently installed on the 9" ford in my Nova. Cheap kit included calipers, rotors, brackets, hoses, & hardware for less than $300 free shipping from Summit. Uses little 11' o.e.m. rotors & calipers from the front of some little GM product. They seemed to have a variety of kits and were pretty helpful. It all bolted together and works GOOD. I got the tech. info and part number from Right Stuff Detailing but bought it from Summit a little cheaper AND with free shipping.
www.getdiscbrakes.com/

Re: 9 inch conversion question??
 

[quote=RustyBucket;7085123]
"your" -- YOU'RE
/quote]

I HATE it when I misspell stuff at 2 AM and see it the next afternoon.

Re: 9 inch conversion question??
 

I got some for sale Bud!;)
http://charlotte.craigslist.org/pts/4833780025.html

Ford 9" Rear Axle Information
http://67-72chevytrucks.com/vboard/s...d.php?t=358081

Ford 9-inch Rear End Length Data
http://67-72chevytrucks.com/vboard/s...d.php?t=354261

Everything you've ever wanted to know about Ford 9 Inch Differentials!
http://67-72chevytrucks.com/vboard/s...d.php?t=454229

Ford 9" Rear End's out of a 1957-1959 Ranchero and station wagon's are 57.25 inches (narrowest 9" housing)
http://67-72chevytrucks.com/vboard/s...d.php?t=662341
http://public.bay.livefilestore.com/...IMAG0268-1.jpg

Online engine resources (casting numbers, calculators, etc.)
http://67-72chevytrucks.com/vboard/s...d.php?t=382583

Re: 9 inch conversion question??
 

Hey Rusty
I'm already there when it comes to brakes, I'm slowly buying parts and ended up buying a full chassis out of a 74. It had a 700hp BBC with tranny and rear end built to handle the power. So now in the process of crossing everything over to my truck. I had the CPP big brake kit before so just needed the bracket so I can mount the rear 12" discs out back on the 9 inch. Cant wait to get rid of all drum brakes on all 4 corners gone. Should be able to hit the corners with more speed now :) I'm going to end up with a pile of high performance parts of the 74 that wont transfer over but the price was right.

Don't worry about the grammar I wouldn't have held that against you lol!!

Re: 9 inch conversion question??
 

Hey Bad62,

I actually have a spooled 4.56 for sale as well. I'm buying a Trac-loc 3.50 3rd member that is rebuilt for $300 so I can at least drive it a 60mph with my TH400 below 2500 rpm. I've got to tune down my motor to make it more streetable so I can at least drive it not trailer it to some events :)