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narrowed 9" question...

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Old 10-02-2007, 02:18 PM   #1
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Default narrowed 9" question...

Going to narrow the 9" in my car. My question is How much can I go without modifing the stock suspension location. I would like to go 2.5"-3" and run a 15x10 with 5" to 4.5"BS(running 15x10 with 7.5" now). Thanks for any input.
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Old 10-02-2007, 02:25 PM   #2
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mine is narrowed 3.75" per side and it's about as close as you can get, the housing end is no more than 1/10" from the lower arm bracket.

I was told that with Big ford ends you can get it closer but will start to run into fitment issues if you are not careful.

My car is minutubed and i'm using a 10" wheel with a 5.5" BS
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Old 10-02-2007, 02:25 PM   #3
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the search works great now. if you search "narrow rear" it will come up with many posts.
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Old 10-02-2007, 02:57 PM   #4
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The most you can narrow the rear and maintain the stock suspension is 5.5 inches / side. You're going to have to do a lot of geometry changes though. That's how I plan on stuff a 15 x 12 in the rear.
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Old 10-03-2007, 10:53 AM   #5
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my rims are custom 15x11 with a 5 backspacing my 9 is narrowed 3 inchs per side and my tires tuck up nicely.
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Old 10-03-2007, 08:42 PM   #6
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What 15 x 11s are you running?
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Old 10-03-2007, 09:39 PM   #7
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They are alumistar 2.0 wheels you have to have the custom made but let me tell you they sit very nicely in the fender well and it gives you the extra tread patch so the tire isnt so unstable on the top in like it is with a 15x10 I have run both.
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Old 10-03-2007, 09:54 PM   #8
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1fstTA, any pix of your car?
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Old 10-04-2007, 09:56 AM   #9
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OK I'm stupid but why narrow to fit the same size rim? Is it just to have a biger selection of rims?
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Old 10-04-2007, 10:17 AM   #10
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Quote:
Originally Posted by n2ojunkie View Post
OK I'm stupid but why narrow to fit the same size rim? Is it just to have a biger selection of rims?
less weight, deeper dish look, tucking tires are all good reasons
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Old 10-04-2007, 04:10 PM   #11
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Ok thats what I thought but was'nt sure.
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Old 10-05-2007, 08:29 AM   #12
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Im out of town but Ill post up some when I get back in town this weekend
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2006 Vette: A&A supercharger a few addons.

2001 Trans Am WS6: fully built chasis by burkhart, upper/lower a-arm. Fab 9 and LSX with 106 going in
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Old 10-10-2007, 05:31 PM   #13
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If you narrow the rear end, at what point do you have to relocate things like panhard bar mounts and lower control arms?

How big of tires are you guys running with or without these chassis mods and what width rear and tire/ rim size and offset do you use?
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Old 10-10-2007, 07:48 PM   #14
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how the hell do you post a pic on here???? I tried the directions that the site says but its not working
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2006 Vette: A&A supercharger a few addons.

2001 Trans Am WS6: fully built chasis by burkhart, upper/lower a-arm. Fab 9 and LSX with 106 going in
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