Ideal Cuda rear end length
#2301143
05/08/17 01:37 PM
05/08/17 01:37 PM
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Joined: Jul 2005
Posts: 153 Bradenton, FL
Benforsp
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OP
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Posts: 153
Bradenton, FL
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I'm wondering what your running as a rear end width in an e-body with stock wheel wells. I plan to run Cass's inboard spring kit but I'm cutting down a rearend and thought maybe someone had a recipe I could follow. I tried to run a set of MT et street s/s 275/60/15's on a stock length rearend with 15x8 rims with a 4.5 bs and they rubbed really bad. I don't think a 5.5 bs would help the issue. So I need some help!
Last edited by Benforsp; 05/08/17 01:38 PM.
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Re: Ideal Cuda rear end length
[Re: Benforsp]
#2301261
05/08/17 05:33 PM
05/08/17 05:33 PM
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Joined: Oct 2007
Posts: 4,206 New York
polyspheric
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master
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Posts: 4,206
New York
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Can't answer your question, but narrowing the spring width and extending the axle width both reduce the rear spring's roll rate (but not its compression rate).
Boffin Emeritus
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Re: Ideal Cuda rear end length
[Re: Benforsp]
#2301339
05/08/17 08:34 PM
05/08/17 08:34 PM
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Joined: Nov 2003
Posts: 10,384 Upstate NY
Bigcube
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I Live Here
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The best way is to move the springs, get the wheels and tires you plan to run, and cut the rear to fit. It's the only way things will be prefect.
Jim
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Re: Ideal Cuda rear end length
[Re: Benforsp]
#2301341
05/08/17 08:35 PM
05/08/17 08:35 PM
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Joined: Nov 2003
Posts: 10,384 Upstate NY
Bigcube
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I Live Here
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Upstate NY
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To add to that, shorter back space makes it easier to get the wheels off. Remember, the wheel hase to come out and to clear the brakes before it comes off.
Jim
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Re: Ideal Cuda rear end length
[Re: Bigcube]
#2301711
05/09/17 01:11 PM
05/09/17 01:11 PM
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Joined: Aug 2003
Posts: 43,195 Bend,OR USA
Cab_Burge
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I Win
Joined: Aug 2003
Posts: 43,195
Bend,OR USA
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The best way is to move the springs, get the wheels and tires you plan to run, and cut the rear to fit. It's the only way things will be prefect. set the rims and tires in the wheel wells with the rear end removed and get them EXACTLY where you want it and then measure form the backside of the rims to each other and write it down. Then contact a good rear end narrowing shop and have them do the narrowing for you, if it is needed. New rims are usually cheaper
Last edited by Cab_Burge; 05/09/17 01:12 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Ideal Cuda rear end length
[Re: Benforsp]
#2301714
05/09/17 01:12 PM
05/09/17 01:12 PM
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Joined: Jun 2005
Posts: 6,257 gulfport, ms, west mi
rowin4
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gulfport, ms, west mi
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If you are going to shorten the rear end as stated above the best way to find the rear length is to get the wheel / tire combination that you are going to use. Again the back space is a something to look at as less back space makes it easier to remove the wheel , also a deeper set wheel looks better imo . Maybe you have a friend that has a wheel tire combination that you could borrow to see what might fit. It is harder to figure the tire wheel out than the rest. It could be very costly if you make the wrong decision .Most vendors will not take a rim or tire back once it has been mounted. Also keep in mind to do any of this the rear must be removed.
it's ok to butt heads, just don't do it with a butthead
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Re: Ideal Cuda rear end length
[Re: Bigcube]
#2301752
05/09/17 02:19 PM
05/09/17 02:19 PM
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Joined: Oct 2003
Posts: 11,684 W. Kentucky
justinp61
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I Live Here
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W. Kentucky
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The best way is to move the springs, get the wheels and tires you plan to run, and cut the rear to fit. It's the only way things will be prefect. This is exactly what I did and my car acme out just like I wanted it. I also agree with using the minimum back space, it makes getting the tire/wheel off easier. I made a fixture of angle iron, a long narrow rectangle to set the tires and wheels in. With the car on jack stands I raised the tire/wheel up and slid the fixture under them and used a floor jack on each end raised the tires and wheels up into the wheel wells. Then it was just a matter of centering them in the wheel well and measuring for the rear end. Remember to subtract brake drum or rotor thickness from the measurement.
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