9 inch conversion question?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67chevysupercharged · 08-18-2014, 09:31 PM

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

dinnut · 08-18-2014, 10:16 PM

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.

67chevysupercharged · 08-18-2014, 11:15 PM

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!

71Dragtruck · 08-18-2014, 11:25 PM

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

KQQL IT · 08-19-2014, 12:28 PM

Quote:

Originally Posted by dinnut

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.

The first one is a truck housing.

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

67chevysupercharged · 08-19-2014, 10:21 PM

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.

**Captainfab** · 08-19-2014, 11:00 PM

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.

**PGSigns** · 08-20-2014, 06:55 AM

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

KQQL IT · 08-20-2014, 01:39 PM

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

vidman · 08-23-2014, 09:10 PM

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

vidman · 08-23-2014, 09:16 PM

Pics

ls64 · 08-24-2014, 08:37 AM

That's a good looking rearend!

67chevysupercharged · 08-24-2014, 08:11 PM

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

vidman · 08-24-2014, 08:43 PM

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..

Dudler · 03-10-2015, 01:10 AM

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.

**Captainfab** · 03-11-2015, 12:02 AM

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.

Quote:

Originally Posted by Dudler

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.

RustyBucket · 03-11-2015, 01:57 AM

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/

RustyBucket · 03-11-2015, 02:39 PM

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

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

1Bad62Pro/Street · 03-12-2015, 08:52 PM

Quote:

Originally Posted by 67chevysupercharged

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!

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

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

Dudler · 03-12-2015, 10:58 PM

Quote:

Originally Posted by RustyBucket

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/

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!!

Dudler · 03-12-2015, 11:07 PM

Quote:

Originally Posted by 1Bad62Pro/Street

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

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

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

08-18-2014, 09:31 PM	#1
67chevysupercharged Registered User Join Date: Sep 2009 Location: Hobbs, New Mexico Posts: 48	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 __________________ 71 Longhorn 402, PS, PDB, AC, Tach, Posi 67 SWB 6.0 LSX swap, 4/6 ECE Drop (Work in Progress) 2002 Victory Red ECSB Silverado 5.3 (DD)

08-18-2014, 10:16 PM	#2
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	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. __________________ 70 longbed 496/th400/Ford 9"

08-18-2014, 11:15 PM	#3
67chevysupercharged Registered User Join Date: Sep 2009 Location: Hobbs, New Mexico Posts: 48	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! __________________ 71 Longhorn 402, PS, PDB, AC, Tach, Posi 67 SWB 6.0 LSX swap, 4/6 ECE Drop (Work in Progress) 2002 Victory Red ECSB Silverado 5.3 (DD)

08-18-2014, 11:25 PM	#4
71Dragtruck Registered User Join Date: Jun 2004 Location: Saskatchewan, Canada Posts: 1,368	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. __________________ Speed is just a matter of money, question is how fast can you afford to go? 8.95@148.97mph all motor haven't tried bottle yet Sponsored by: Getz Oilfield Consulting Hard Candy Customs

08-19-2014, 10:21 PM	#6
67chevysupercharged Registered User Join Date: Sep 2009 Location: Hobbs, New Mexico Posts: 48	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. __________________ 71 Longhorn 402, PS, PDB, AC, Tach, Posi 67 SWB 6.0 LSX swap, 4/6 ECE Drop (Work in Progress) 2002 Victory Red ECSB Silverado 5.3 (DD)

08-19-2014, 11:00 PM	#7
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	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. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

08-20-2014, 06:55 AM	#8
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	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 __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

08-20-2014, 01:39 PM	#9
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,254	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... __________________ " That didnt make it any newer " " Dont antique the equipment "

08-23-2014, 09:10 PM	#10
vidman Registered User Join Date: Jun 2012 Location: Fitchburg,Mass Posts: 737	Re: 9 inch conversion question?? My Moser fab 9" with 35 spline axles and Detroit locker.. cost was around 3400.00 __________________ 62 Willys 4wd Pickup : 72 C-10 swb 504 stroker 09 Taco 3" lift 33" tires: 90 K-5 blazer (plow truck): RIP Ross Little brother

08-23-2014, 09:16 PM	#11
vidman Registered User Join Date: Jun 2012 Location: Fitchburg,Mass Posts: 737	Re: 9 inch conversion question?? Pics Attached Images __________________ 62 Willys 4wd Pickup : 72 C-10 swb 504 stroker 09 Taco 3" lift 33" tires: 90 K-5 blazer (plow truck): RIP Ross Little brother

08-24-2014, 08:37 AM	#12
ls64 Registered User Join Date: Jan 2014 Location: Mobile, Al Posts: 7	Re: 9 inch conversion question?? That's a good looking rearend!

08-24-2014, 08:11 PM	#13
67chevysupercharged Registered User Join Date: Sep 2009 Location: Hobbs, New Mexico Posts: 48	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? __________________ 71 Longhorn 402, PS, PDB, AC, Tach, Posi 67 SWB 6.0 LSX swap, 4/6 ECE Drop (Work in Progress) 2002 Victory Red ECSB Silverado 5.3 (DD)

08-24-2014, 08:43 PM	#14
vidman Registered User Join Date: Jun 2012 Location: Fitchburg,Mass Posts: 737	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.. Attached Images __________________ 62 Willys 4wd Pickup : 72 C-10 swb 504 stroker 09 Taco 3" lift 33" tires: 90 K-5 blazer (plow truck): RIP Ross Little brother

03-10-2015, 01:10 AM	#15
Dudler Registered User Join Date: Nov 2013 Location: colville washington Posts: 20	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.

03-11-2015, 01:57 AM	#17
RustyBucket Registered User Join Date: Jul 2009 Location: Space Coast, Fl. Posts: 1,055	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/ __________________ Dad always said, "Son, WISH IN ONE HAND, and ......." -------------------------------------- -------------------------------------- Current toy trucks: '71 GMC 1500 SUPER CUSTOM short/step, orig. dk. blue, 350/700r, ps,pb, A/C '72 Blazer 2wd, ochre & white, 454, tremecTKO 500 5spd. ps, pb, A/C, tilt Last 10yrs of hobby vehicles, had a FEW more in the 50yrs. before these: '66 Plymouth Belvedere City of Miami cop car clone. '70 Nova 406"sb, 13.5-1, solid roller, Brodix, p.glide/t.brake, back halved, 9" Ford, spool 4.88, cage,ladder bar/coilover, 10.5 tire....... SOLD!! '67 C10 short/step side mount spare -- SOLD!! '72 Jimmy 2wd, 350/350, ps, pb, fun driver, lots of bondo & a shiny red paint job..... SOLD!! '69 Nova 350, 4spd, A/C, ps, p.b, ...SOLD!!



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03-11-2015, 02:39 PM	#18
RustyBucket Registered User Join Date: Jul 2009 Location: Space Coast, Fl. Posts: 1,055	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. __________________ Dad always said, "Son, WISH IN ONE HAND, and ......." -------------------------------------- -------------------------------------- Current toy trucks: '71 GMC 1500 SUPER CUSTOM short/step, orig. dk. blue, 350/700r, ps,pb, A/C '72 Blazer 2wd, ochre & white, 454, tremecTKO 500 5spd. ps, pb, A/C, tilt Last 10yrs of hobby vehicles, had a FEW more in the 50yrs. before these: '66 Plymouth Belvedere City of Miami cop car clone. '70 Nova 406"sb, 13.5-1, solid roller, Brodix, p.glide/t.brake, back halved, 9" Ford, spool 4.88, cage,ladder bar/coilover, 10.5 tire....... SOLD!! '67 C10 short/step side mount spare -- SOLD!! '72 Jimmy 2wd, 350/350, ps, pb, fun driver, lots of bondo & a shiny red paint job..... SOLD!! '69 Nova 350, 4spd, A/C, ps, p.b, ...SOLD!!

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