Rearend Identification
Thread Starter
|
Senior User
Joined: Feb 2002
Posts: 448
Likes: 1
From: MN
Rearend Identification
[IMG]C:\My Documents\My Pictures\Website Truck[/IMG] [IMG]C:\My Documents\My Pictures\Website Truck[/IMG] [IMG]C:\My Documents\My Pictures\Website Truck[/IMG]
[IMG]C:\My Documents\My Pictures\Website Truck[/IMG]
Can anyone help me identify this rearend?
Checkout my website, it has been updated!
[IMG]C:\My Documents\My Pictures\Website Truck[/IMG]
Can anyone help me identify this rearend?
Checkout my website, it has been updated!
Senior User
Joined: Nov 2003
Posts: 404
Likes: 0
From: Indiana
I pretty sure it's a ford 8".It's got the M with the 2 C's in the middle which stand's for Michigan casting center,so it's definetly a Ford product.
Last edited by freak98; Dec 20, 2003 at 05:39 PM.
Thread Starter
|
Senior User
Joined: Feb 2002
Posts: 448
Likes: 1
From: MN
Mil1ion
The tag in the fourth picture. Is that the ID tag for the rear end?
It's really hard to see, but I'll get a crayon or grease pencil and rub the tag onto a piece of paper.
I need to ID the thing, because I want to figure out what gear ratio I need. The engine and tranny will be done soon after christmas and I would like to get everything hooked up.
Check out the website, let me know what you think.
It's really hard to see, but I'll get a crayon or grease pencil and rub the tag onto a piece of paper.
I need to ID the thing, because I want to figure out what gear ratio I need. The engine and tranny will be done soon after christmas and I would like to get everything hooked up.
Check out the website, let me know what you think.
Senior User
Joined: Apr 2003
Posts: 274
Likes: 0
From: Maine
Rocking M
If you cant get a rachet on the bottom two nuts then it's a 9 " rearend.... That ID tag will tell you right on it what ratio it is, One of my tags say 3.50 right on it. If worse came to worse and you are going to open up the rearend anyways, just count the teeth on both the ring and pinion gears. Divide the pinion into the ring and it'll tell you your ratio. If you memory is good , You'll remember talking to me awhile back. I am building up a 77 ford F100(started life also as blue 6cyl. ) Anyways, I stuck with the 3.50 gears and installed an Auburn Gear Pro Series limited slip differential. I am going to be running about a 28 inch tire and figured that would put me in the right rpm range around 65.
P.S. checked out your website, looks great your making good progress. I'm a little ahead of you right now as I've got my engine and tranny installed and my Cab finished and painted inside and out and installed. But things have been moving slow here also as of late. Take Care
James(Maine)
1977 Ford F100 2wd SWB
468 with streetfighter C-6
If you cant get a rachet on the bottom two nuts then it's a 9 " rearend.... That ID tag will tell you right on it what ratio it is, One of my tags say 3.50 right on it. If worse came to worse and you are going to open up the rearend anyways, just count the teeth on both the ring and pinion gears. Divide the pinion into the ring and it'll tell you your ratio. If you memory is good , You'll remember talking to me awhile back. I am building up a 77 ford F100(started life also as blue 6cyl. ) Anyways, I stuck with the 3.50 gears and installed an Auburn Gear Pro Series limited slip differential. I am going to be running about a 28 inch tire and figured that would put me in the right rpm range around 65.
P.S. checked out your website, looks great your making good progress. I'm a little ahead of you right now as I've got my engine and tranny installed and my Cab finished and painted inside and out and installed. But things have been moving slow here also as of late. Take Care
James(Maine)
1977 Ford F100 2wd SWB
468 with streetfighter C-6
Senior User
Joined: Dec 2000
Posts: 385
Likes: 0
that is a 9" with the earlier non-HD housing.
first group of numbers on that tag's second line will tell you the ratio. more than likely it is 3.00,3.50,4.11. these are the most common.
Eric
first group of numbers on that tag's second line will tell you the ratio. more than likely it is 3.00,3.50,4.11. these are the most common.
Eric
Trending Topics
Thread Starter
|
Senior User
Joined: Feb 2002
Posts: 448
Likes: 1
From: MN
Here is what the tag says.
CM-8F 5JB
3 00 9 334A
I assume the gear ratio is 3.0. In addition, this is not a posi rear end. Does anyone know what spline count this has? Any additional information about this would be greatly appreciated.
3 00 9 334A
I assume the gear ratio is 3.0. In addition, this is not a posi rear end. Does anyone know what spline count this has? Any additional information about this would be greatly appreciated.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Senior User
Joined: Dec 2000
Posts: 385
Likes: 0
Re: Here is what the tag says.
Originally posted by Rocking M
CM-8F 5JB
3 00 9 334A
I assume the gear ratio is 3.0. In addition, this is not a posi rear end. Does anyone know what spline count this has? Any additional information about this would be greatly appreciated.
CM-8F 5JB
3 00 9 334A
I assume the gear ratio is 3.0. In addition, this is not a posi rear end. Does anyone know what spline count this has? Any additional information about this would be greatly appreciated.
Eric
Thread
Thread Starter
Forum
Replies
Last Post
Apocalypse
Excursion - King of SUVs
132
Dec 16, 2014 08:15 PM
jason867
1973 - 1979 F-100 & Larger F-Series Trucks
63
Apr 23, 2014 07:54 AM