Drag Racing Tech - narrowed 9" question...




View Full Version : narrowed 9" question...


NOSJNKY
10-02-2007, 02:18 PM
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.


Twin76mmTA
10-02-2007, 02:25 PM
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

gator's 99TA
10-02-2007, 02:25 PM
the search works great now. if you search "narrow rear" it will come up with many posts.


Beaflag VonRathburg
10-02-2007, 02:57 PM
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.

1fstTA
10-03-2007, 10:53 AM
my rims are custom 15x11 with a 5 backspacing my 9 is narrowed 3 inchs per side and my tires tuck up nicely.

Beaflag VonRathburg
10-03-2007, 08:42 PM
What 15 x 11s are you running?

1fstTA
10-03-2007, 09:39 PM
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.

gator's 99TA
10-03-2007, 09:54 PM
1fstTA, any pix of your car?

n2ojunkie
10-04-2007, 09:56 AM
OK I'm stupid but why narrow to fit the same size rim? Is it just to have a biger selection of rims?

Fireball
10-04-2007, 10:17 AM
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

n2ojunkie
10-04-2007, 04:10 PM
Ok thats what I thought but was'nt sure.

1fstTA
10-05-2007, 08:29 AM
Im out of town but Ill post up some when I get back in town this weekend

chrismorales75
10-10-2007, 05:31 PM
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?

1fstTA
10-10-2007, 07:48 PM
how the hell do you post a pic on here???? I tried the directions that the site says but its not working