51" Wide 9" Rearend In A 68 Impala Pro Tourer??? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-24-2010, 12:04 PM
Registered User
 
Last photo:
Join Date: Feb 2007
Location: Austria
Posts: 100
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
51" Wide 9" Rearend In A 68 Impala Pro Tourer???

I would like to fit a 9" Ford rearend in my 68 Impala Pro-Touring-build.

I live in Austria/Europe, therefor it is not that easy to come by us car parts at all.
At a local seller I am offered to buy a 9" which is narrowed, after a mail I could determine width, it is 51" or 129cm from outside of one drum to the outside of the other.

That seems to be quite small altough I am after a narrowed one since I want to narrow the frame as well and want to go with 20 incher with around 335 to 355 since I want to make sure that I have everything possible done one the tire side to have a bit of street traction with my 572.

What is your opinon, will it work with very less backspaced wheels. What wheel width would be necessery for those tireses 12 - 14 I guess.



Thanks for any opinion

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-24-2010, 01:56 PM
big gear head's Avatar
High Performance Rear Ends
 
Last photo:
Join Date: Nov 2009
Location: Central City, KY
Posts: 2,064
Wiki Edits: 0

Thanks: 11
Thanked 428 Times in 367 Posts
That is a very narrow rear end for that wide car. It is always best to buy the wheels and tires that you want to use before doing any rear end work. You need to put the wheels and tires under the car and then measure the distance between the wheel mounting flanges to determine the total width of the rear end. Then the rear end can be built to fit your car and the wheels and tires that you want to use. It is much better to go this way than to buy a rear end first and then try to fit wheels and tires to the rear end.

Something else that you need to consider is the pinion offset. All Chevy car rear ends have the pinion offset 1/2 inch to the right of center. You will need to build the rear end with this offset so that the drive shaft will run in line with the tunnel in the floor, and so that the u joint angles will be right.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-24-2010, 02:38 PM
Registered User
 
Last photo:
Join Date: Feb 2007
Location: Austria
Posts: 100
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I did not know about the pinion offset, very interesting.

How stated before, comeing by parts is not that easy in Europe, I want to do it in another way, I want to take the rear end and than I would using Percy´s wheel fitment tool to determine the wheel specifications.

So you think the 51" are way to small, even with 0-Backspacing wheels?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-24-2010, 02:44 PM
big gear head's Avatar
High Performance Rear Ends
 
Last photo:
Join Date: Nov 2009
Location: Central City, KY
Posts: 2,064
Wiki Edits: 0

Thanks: 11
Thanked 428 Times in 367 Posts
Are you going to be able to find wheels that will fit?
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-24-2010, 03:28 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,247
Wiki Edits: 9

Thanks: 104
Thanked 133 Times in 124 Posts
Quote:
Originally Posted by big gear head
That is a very narrow rear end for that wide car.

Something else that you need to consider is the pinion offset. All Chevy car rear ends have the pinion offset 1/2 inch to the right of center. You will need to build the rear end with this offset so that the drive shaft will run in line with the tunnel in the floor, and so that the u joint angles will be right.
Why do you feel it's too narrow?? I have a narrowed 9", that's 40 inches flange to flange, with 14 wide wheels and 5 inches backset, they fit perfectly, tucked inside the wheel wells. The stock width for my Nova is 58.9" the Impala is 62.4", which is only 3.6" difference, but regardless, how much you narrow it depends on the overall width you want to end up with, considering flange to flange width, axle standoff, wheel and tire width. Then calculate your backspacing requirements. Not necessarily in that order.

I also have my pinion centered. You won't have any tunnel clearance issues. Do pay attention to your pinion up/down angles.
__________________
Boost adds dignity to what would otherwise be a vulgar brawl...

Midnight Sun Street Rod Association
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 01-24-2010, 07:47 PM
big gear head's Avatar
High Performance Rear Ends
 
Last photo:
Join Date: Nov 2009
Location: Central City, KY
Posts: 2,064
Wiki Edits: 0

Thanks: 11
Thanked 428 Times in 367 Posts
I feel like it is too narrow because he isn't building a pro street car, he's building a pro touring car. Wheels for pro touring are not as wide as pro street. The rear end in my Camaro is about 49 inches wide and I have 14 inch wide wheels on it. I doubt that he will be using a 14 inch wide wheel.

The stock width for your Nova is 60 inches, same as my Camaro.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 01-24-2010, 08:00 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,247
Wiki Edits: 9

Thanks: 104
Thanked 133 Times in 124 Posts
Quote:
Originally Posted by big gear head
The stock width for your Nova is 60 inches, same as my Camaro.
My data was pulled from two different sources, I didn't look at a Camaro, it very well could be the same. 58.9 inches.

http://www.novaresource.org/dimensions.htm#1968
__________________
Boost adds dignity to what would otherwise be a vulgar brawl...

Midnight Sun Street Rod Association
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 01-24-2010, 08:11 PM
big gear head's Avatar
High Performance Rear Ends
 
Last photo:
Join Date: Nov 2009
Location: Central City, KY
Posts: 2,064
Wiki Edits: 0

Thanks: 11
Thanked 428 Times in 367 Posts
I know that this sounds like I'm being a smart elic, but I'm not. My data was taken from my tape measure and the many rear ends that I have built for these cars. The '68 to 78 Nova rear ends and '67 to '69 Camaro rear ends are the same. The axle shaft length is 29 9/16 and the cross shaft diameter is 7/8, which gives a total width of 60 inches.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 01-25-2010, 06:40 PM
Registered User
 
Last photo:
Join Date: Feb 2007
Location: Austria
Posts: 100
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by 68NovaSS
Why do you feel it's too narrow?? I have a narrowed 9", that's 40 inches flange to flange, with 14 wide wheels and 5 inches backset, they fit perfectly, tucked inside the wheel wells. The stock width for my Nova is 58.9" the Impala is 62.4", which is only 3.6" difference, but regardless, how much you narrow it depends on the overall width you want to end up with, considering flange to flange width, axle standoff, wheel and tire width. Then calculate your backspacing requirements. Not necessarily in that order.

I also have my pinion centered. You won't have any tunnel clearance issues. Do pay attention to your pinion up/down angles.
Thanks for that informations, Sir!

Are you positive on the Impala rearend measurement?

If so I come to that:

Stock Impala rearend: 62,4" (168,5cm)
Narrowed Ford 9 inch: -----------------------------------------------------
Overall-difference : 11,4" (29cm)m
Difference per side: 5,7" (14,5cm)

68 Imp Backspacing: 4,5"-4.75" on 8" Rims

So outer rim-lip to outer rim lip distance on a stock rearend should be around

69,4" (176cm)


So if I calculate it the right way the 51"wide Ford 9-inch would already be long enough with

9" rims + 0" backspacing
or 10" rims + 1" backspacing
or 12" rims + 3" backspacing

to fill the fender a bit better I could go with 12" Rims but only 2" of backspacing.
Sounds quite good to me, please, tell me your opinion on that calculation?

I think a 335 to 355 tire would go with at least 12", is that correct?
Attached Thumbnails
Click image for larger version

Name:	Rear end considerations-1.jpg
Views:	97
Size:	274.1 KB
ID:	43443  
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 01-25-2010, 07:24 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,247
Wiki Edits: 9

Thanks: 104
Thanked 133 Times in 124 Posts
big gear head said he has physically measured his Camaro and it is the same as the Nova. I would use his measurements over something printed, he sounds very sure of the measured width.

See his post above.

I do know my pinion is centered on the trans tailshaft, although offset from center in the differential housing, with no clearance issues. I have a fabricated trans tunnel, but the width is the same as stock.

I can't see your post from this screen, but you did adjust for axle standoff? Mine with the Torino ends is 2.5" each side, to the wheel mounting surface.
__________________
Boost adds dignity to what would otherwise be a vulgar brawl...

Midnight Sun Street Rod Association
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 01-25-2010, 08:07 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,380
Wiki Edits: 0

Thanks: 29
Thanked 467 Times in 424 Posts
I don't think you are going to have any luck finding 10" or 12" wheels with less than 4" backspace, unless you are talking custom made wheels, and you still won't find anyone who will make a 1" backspace wheel. It just isn't possible to do because of the basic shape of the inner wheel half.

Maybe a 4" backspace with a 1-1/2" spacer??
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 01-25-2010, 08:38 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,247
Wiki Edits: 9

Thanks: 104
Thanked 133 Times in 124 Posts
Here's my worksheet from Mark Williams. Visit any differential or axle vender for their worksheet, this will give you an idea what's what.

http://www.markwilliams.com/
Attached Thumbnails
Click image for larger version

Name:	ScannedImage-4.jpg
Views:	90
Size:	297.2 KB
ID:	43447  
__________________
Boost adds dignity to what would otherwise be a vulgar brawl...

Midnight Sun Street Rod Association
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 01-25-2010, 11:03 PM
Registered User
 
Last photo:
Join Date: Feb 2007
Location: Austria
Posts: 100
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I saw at least Convo Pro 15"x12" with 3,5"Backspacing, that is only half an inch more than I am looking for.

I hope I can get something like that on American Racings´s Torq Thrust II
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 01-25-2010, 11:26 PM
gordforman's Avatar
Registered User
 
Join Date: Jan 2006
Location: Winnipeg MB Canada
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
51" Wide 9" Rearend In A 68 Impala Pro Tourer???

LISTEN to Big Gear Head, then check out Mark Williams , Moser Engineering or the like to order a rear end (or see how they do it) that will fit the WHEELS YOU PUT UNDER THE CAR.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 01-26-2010, 07:26 PM
S10xGN's Avatar
Gotta love a turbo!
 

Last journal entry: Body on Frame today.
Last photo:
Join Date: Aug 2004
Location: Port Neches, TX
Age: 61
Posts: 1,660
Wiki Edits: 0

Thanks: 0
Thanked 61 Times in 57 Posts
Here's my solution for a cheap way to mock things up, cardboard cutouts. If you have access to the axle, you can do this easily. If not, make an axle out of a piece of tubing or an old broomstick. Get the dimensions of your tires and wheels from the makers websites. I've used this method many times, it's foolproof and cheap.

Russ
Attached Thumbnails
Click image for larger version

Name:	100_0691s.jpg
Views:	98
Size:	37.9 KB
ID:	43463  
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
10 ft wide garage doors.............. poncho62 Garage - Tools 3 08-27-2007 06:03 PM
Questions about wide wheels and fender flares tcruise Body - Exterior 5 06-09-2006 05:50 PM
tires, how wide can I go? 29whippet Suspension - Brakes - Steering 2 04-13-2005 01:39 PM
AOD into mustang Stangman196700 Transmission - Rearend 3 12-16-2004 08:51 PM
What car has a 9 in ford less than 64 inches wide? BillyBob1950 Transmission - Rearend 2 02-12-2003 08:21 PM


All times are GMT -6. The time now is 11:22 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.