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Author
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Topic: 66 rear axle
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bushman
Journeyman Posts: 45
From: newberg, OR, USA
Registered: Feb 2004
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posted 02-21-2004 02:39 PM
   
Question, guys. I have a 66 mustang with a spooled 8 inch rear (i didnt do it). In the garage is a 9 inch from a 72 mustang 351C car. Won't this rear end just bolt in? Or is it too wide? I believe the axle tubes are the same size so that shouldnt be a problem. Also, is there a difference in u-joint sizes?
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Moneymaker
Administrator Posts: 26811
From: Lyons, IL, USA
Registered: May 99
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posted 02-21-2004 03:02 PM
Later rear end housing is 4 inches wider.
48 vs 52
It will bolt in but you will lose some tire clearance.
The axle tube ends are thicker on the late 9 inch also.
They make conversion u-joints.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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bushman
Journeyman Posts: 45
From: newberg, OR, USA
Registered: Feb 2004
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posted 02-21-2004 03:04 PM
would it just be easier to put a new center in the 8 inch, or is it weak enough to be questionable?
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FastFordAndy
Journeyman Posts: 45
From: Glendora, Ca.
Registered: Nov 2000
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posted 02-21-2004 03:06 PM
The 72 rear end fits the 66 spring pads but the rear end is 4in. wider. Also the axle tubes on the 72 are larger in diameter where the u bolts go. If you have someone in your area to shorten the 72 rear to 66 width, you can use the 66 axles assuming you are sticking with 28 spline. Then you will need new u bolts and slot the original 66 shock brackets and then it will fit properly. You will also notice you will less clearance between the top of the axle housing to the frame. If car ride at a decent hight and is not lowered you should have no problems. U joints will be different but if you use the yoke from an early 9" pickup rear you will not need to shorten the drive shaft and there is a u joint that works with this modification.
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Moneymaker
Administrator Posts: 26811
From: Lyons, IL, USA
Registered: May 99
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posted 02-21-2004 06:40 PM
Mosier/Strange case, spool, and good axles would make a nearly unbreakable 8 inch.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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bushman
Journeyman Posts: 45
From: newberg, OR, USA
Registered: Feb 2004
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posted 02-24-2004 02:00 AM
I'm sort of on a budget. What's the best way to go? Will a later 8 inch case handle 500 horsepower? I wish I could just find a used 9 inch housing of the right width!
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Wicked-Toy
Gearhead Posts: 238
From: Richmond, VA USA
Registered: Jun 99
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posted 02-24-2004 08:11 AM
Very timely post as I sort of have the same problem. I acquired for the right price (aka free) a 9 inch from something. There are no tags, the guy I got it from said it came from a 72 or 73 Mustang but who knows. I want to get it shortened to fit my 66 Conv project. I have completely disassembled the housing and it measures 55 7/8" from flange to flange (bare housing flanges). The spring perches measure 43" center to center. It appears the spring perches are correct for a 66 but it is too wide. What overall dimension should it be shortened to to go under the 66. ------------------
Scott Akom
65 Coupe (Modified)
68 Coupe (Son's)
2000 GT Conv. (Wifes)
1987 GT Conv. (Son's)
1966 Project Conv.[URL=http://www.geocities.com/motorcity/flats/3845/65dsde2.jpg
www.mustangsandmore.com/ubb/WickedToy.html
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Fastymz
Moderator Posts: 20638
From: Reno Nv USA M&M#1240
Registered: Apr 2001
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posted 02-24-2004 02:03 PM
quote:
Originally posted by Moneymaker:
Mosier/Strange case, spool, and good axles would make a nearly unbreakable 8 inch.
Alex where can you get that case and how much are they ? also what would be good axles ?
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SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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