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12" Wheels in True 10.5 Tires!! Updated 12" narrowed Racecraft 9" rearend

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Old 12-16-2010, 10:23 PM
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Originally Posted by mr_biscuitz
What tire is that in the pic, whats the back space and how much was the rear narrowed? thanks
295/65/15 mt radial
15x10 with 5.5 bs
narrowed 3" each side
mini-tubbed
Old 12-17-2010, 03:19 PM
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Originally Posted by 9sec93
295/65/15 mt radial
15x10 with 5.5 bs
narrowed 3" each side
mini-tubbed
Old 12-17-2010, 08:47 PM
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Whew that is tight but it sure looks good man. Guess that's how tight mine would be if I stepped up to a big tire.
Old 12-17-2010, 09:33 PM
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Wow thats a sick looking mini tub.
Old 12-17-2010, 11:30 PM
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Originally Posted by 9sec93
Damn that looks familiar
And it's still that clean.
I have a few 100 miles on it this summer and they don't rub.
Old 12-18-2010, 06:10 AM
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The above picture, if you put the control arm right up against the inner mount, you'dgain all that clearance. That's what'we are doing with mine, lca's are going right up on the inside of the mounts. Rear mounts are getting redone for additional holes, and they will be just wide enough for the rod end to fit inside.

15x12 with a 5 inch backspace is what I'm going with, and we will take the 5.5 inches off the rear, should pull the tires in a touch like the above picture. Hoping to fit a 31.10.5 tire, and slam her down on the ground tunnel's getting redone, and the frame rails will be notched for rear clearnace)
Old 12-18-2010, 03:24 PM
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moderator lastls1 (Andy) runs 15x12's, minitubs, and the rear is narrowed quite a bit too. Maybe PM him for his thoughts.
Old 12-19-2010, 01:48 AM
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Originally Posted by 9sec93
i will post the under car pic tomorrow. im at work and dont have it on this computer

badA$s looking car

i wish mine would look like that
thx

So, none of guys have 12" wheels with 10.5 tires?
True 10.5 tires (can't run "W" in my Class)
Old 12-19-2010, 01:50 AM
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Originally Posted by Pro Stock John
moderator lastls1 (Andy) runs 15x12's, minitubs, and the rear is narrowed quite a bit too. Maybe PM him for his thoughts.
PM'd him

thx
Old 12-19-2010, 05:54 AM
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i had this set-up on my mustang but no pics on an f-body but here is a 10.5 (non W) on a 12" rim atleast so you can see what it looks like
Old 12-19-2010, 08:08 PM
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I'm narrowed 3" per side. I run a 5" backspace on a 15-12 wheel. The Billet Specialty wheels that are for sale. lol
Old 12-20-2010, 12:40 AM
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LASTLS1, can you post pics of your ride just to see how the tires sit in the wheelwell?

and to get a better view of the whole matter , what wheels (width/backspacing) fit on a stock width rear end and stock tubs?
Old 12-20-2010, 09:11 AM
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Originally Posted by 1dirtyZ
LASTLS1, can you post pics of your ride just to see how the tires sit in the wheelwell?

and to get a better view of the whole matter , what wheels (width/backspacing) fit on a stock width rear end and stock tubs?
Minitub.
Old 12-20-2010, 04:37 PM
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i meant what is the biggest tire/wheel combo that would fit on a stock width rear end and stock wheelwells so people can see how much they would need to tub the car or what wheel to get if the rear is narrowed.
Old 12-27-2010, 04:35 PM
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Originally Posted by 9sec93
i had this set-up on my mustang but no pics on an f-body but here is a 10.5 (non W) on a 12" rim atleast so you can see what it looks like
thanks a lot guys, and really appreciate your help 9sec93
Old 12-28-2010, 03:16 AM
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any time. glad i could help
Old 08-10-2011, 05:28 AM
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update:

thank you 1dirtyz for uploading the pics and for helping me building my car.

i have received Racecraft 9" rear end narrowed 6" from each end, and i also got my weld racing 15 X 12 bead lock wheels with 4" back spacing and hoosier 28x10.5 slicks . i also have the car minitubbed .

here is how the whole setup looks : (in the pictures we hand tight every thing)



















WOLF dual sway bar



















from the pics you see above, there is a 2 inchs gap between the fender and the side wall, i'm going to use a spacer as the LCA barely touch the tires.



had to cut the pan hard bracket to clear the wheels and use the second hole instead.









i've got the Fornt Ultra-light suspension package installed also



2" drop spindle











Old 08-10-2011, 08:39 PM
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and here are my questions after putting everything on the car :

the steering rack seems to sit too far forward cause the tie rods angle back quite a bit , is this normal for a drage application ??

another thing i noticed was that the coilover spring touches the spindle body at full droop , should we be concerned about this or just ignore it since the front end will be tied down with the travel limiters (see last pic)?

last question ( to make the OP feel better ) is is it ok to have the rear shocks angled inward a bit ? because of the narrowed rear end the bottom of the shocks are closer to each other than the tops - kinda like \ / ( but not as dramatic )

another thing i'd like to mention is that the diff fit in there with 6" chopped off each end but its close ( there was about a half inch gap between the tires and the LCA's and the frame ) spacers are not really needed but would definatly make everything fit " better " , what you will need is offset LCA mounts and a shorter panhard bar .
Old 08-10-2011, 10:32 PM
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Looking good. Nice parts you got there
Old 08-16-2011, 08:42 PM
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Originally Posted by 1dirtyZ
another thing i noticed was that the coilover spring touches the spindle body at full droop , should we be concerned about this or just ignore it since the front end will be tied down with the travel limiters (see last pic)?
+1

i'd like to know the answer also.


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