BADASS of New England

An automobile club for the enthusiast who enjoys the last of the big GM cars. The rear wheel drive B and D bodys. Chevrolet Impala SS, Caprice, 9C1, Buick Roadmaster, Oldsmobile Custom Cruiser, Cadillac Fleetwood
 
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 widths (again)

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No Moa

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PostSubject: widths (again)   Wed Apr 28, 2010 2:16 pm

So i'm to understand GM narrowed the 9c1 rear for snow chains????? I guess i'm having a hard time figuring y ud go closer to add chains???
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Tomz9C1

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PostSubject: Re: widths (again)   Wed Apr 28, 2010 2:43 pm

http://www.impalassforum.com/vBulletin/showthread.php?t=233594&highlight=Axle+length
91-96 9c1 are 30 3/8" long as are the Roadmaster Sedan .
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PostSubject: Re: widths (again)   Wed Apr 28, 2010 3:01 pm

^^^^^^ What does that have to do with anything about snow chains? confused
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bammax

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PostSubject: Re: widths (again)   Wed Apr 28, 2010 3:12 pm

Snow chains add about an inch to the overall width of the tire. For the wheel to come off of the car it needs to come far enough from the hub to clear the studs. Once you pull the wheel out that far with the added width of the chains you start to hit the inside of the wheel well. So for the sake of speed and ease they narrowed the rear to allow greater clearence for changing the wheels out. Since these cars have plenty of room on the backside of the wheel it's really not an issue to decrease the track width on the rear.

Unless your buying aftermarket wheels and need to figure out backspacing, or are buying new axles, it's really not anything to even think about.
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PostSubject: Re: widths (again)   Wed Apr 28, 2010 3:17 pm

bammax wrote:
Snow chains add about an inch to the overall width of the tire. For the wheel to come off of the car it needs to come far enough from the hub to clear the studs. Once you pull the wheel out that far with the added width of the chains you start to hit the inside of the wheel well. So for the sake of speed and ease they narrowed the rear to allow greater clearence for changing the wheels out. Since these cars have plenty of room on the backside of the wheel it's really not an issue to decrease the track width on the rear.

Unless your buying aftermarket wheels and need to figure out backspacing, or are buying new axles, it's really not anything to even think about.


Thats what i was looking for, i was thinking inside, not outside the wheel. That explains alot.
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