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c5 and skinnies

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Old Jan 2, 2007 | 03:45 PM
  #1  
cam406406's Avatar
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From: Lombard IL
Car: 1989 TA
Engine: 406
Transmission: 400
Axle/Gears: 9 inch
c5 and skinnies

just wondering if anyone is using a c5/zo6 kit and skinnies i know the smallest i have seen is 17 but the skinnies dont cover the roter or caliper do they to small of an offset please help maby some pics if you have them!!
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Old Jan 2, 2007 | 07:02 PM
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cam406406's Avatar
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From: Lombard IL
Car: 1989 TA
Engine: 406
Transmission: 400
Axle/Gears: 9 inch
NO ONE????
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Old Jan 2, 2007 | 07:44 PM
  #3  
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Skinnies won't fit over C4 or LS1 brakes so there's no way they'll fit over C5 brakes. I tried. I ended up going with an Aerospace brake package.
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Old Jan 2, 2007 | 07:49 PM
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cam406406's Avatar
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From: Lombard IL
Car: 1989 TA
Engine: 406
Transmission: 400
Axle/Gears: 9 inch
then what do you run for an upgrade if you want to be ablt to use street wheels and skinnies
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Old Jan 2, 2007 | 08:35 PM
  #5  
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
You use factory brakes for get something like the Aerospace or Wilwood brake package.

Aerospace kit AC-225
http://www.jegs.com/webapp/wcs/store...13517_-1_10155

Wilwood kit 140-2992-B
http://www.jegs.com/webapp/wcs/store...13611_-1_10155

That's about the only upgrade kits that will work with skinnies. I'm only now upgrading my front brakes. The factory brakes can't handle slowing down from 140 mph in the 1/4 mile.
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Old Jan 2, 2007 | 09:54 PM
  #6  
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
12" C4s would fit skinnies very well, I just think the other kits will be too large.

Ed
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Old Jan 2, 2007 | 11:13 PM
  #7  
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Possibly using the thin rear disk on the front as in your conversion but I know the LS1 brakes won't work with skinnies. The thick rotor and large caliper just won't fit.
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Old Jan 3, 2007 | 02:38 PM
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cam406406's Avatar
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From: Lombard IL
Car: 1989 TA
Engine: 406
Transmission: 400
Axle/Gears: 9 inch
what if i used a spacer like the ones the sell for a 4th gen wheel conversion
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Old Jan 3, 2007 | 08:24 PM
  #9  
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
You would need about a 2" spacer
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Old Jan 15, 2007 | 03:35 PM
  #10  
cam406406's Avatar
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From: Lombard IL
Car: 1989 TA
Engine: 406
Transmission: 400
Axle/Gears: 9 inch
so the c4 will fit a skinny are they as good as an aftermarket setup ?
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Old Jan 30, 2009 | 04:06 PM
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From: NE Ohio
Car: 82 Z28
Engine: TT LS
Transmission: 4L80E
Axle/Gears: S60 3.54's
Re: c5 and skinnies

I'm bout to find out if C5's will work. There is clearance, but it's on the order of 1/16" or so. My skinnies need at least a 3/4" spacer to bolt up, but I'm going to most likely go with a 1.5" that should also let me fit a LS1/C5/C6 wheel should I decide to do that later.
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Old Jan 30, 2009 | 05:05 PM
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From: The "D"
Car: A Portly 85 Z28
Engine: 4.530 X 4.250 BBC
Transmission: under rated for this application
Axle/Gears: also under rated
Re: c5 and skinnies





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Old Jan 30, 2009 | 05:52 PM
  #13  
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From: Kemah, Tx
Car: 1991 z28
Engine: Turbo 310
Transmission: T56
Axle/Gears: D44
Re: c5 and skinnies

what rims are those ^ ?
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Old Jan 30, 2009 | 06:07 PM
  #14  
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From: The "D"
Car: A Portly 85 Z28
Engine: 4.530 X 4.250 BBC
Transmission: under rated for this application
Axle/Gears: also under rated
Re: c5 and skinnies

17in. Alumistar 2.0
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Old Jan 31, 2009 | 02:31 AM
  #15  
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From: IL
Car: 91RS, 91RS
Engine: 305TBI, 3.1MP
Transmission: WCT5, TH700
Re: c5 and skinnies

Originally Posted by greezemonkey




Damn that is a clean 2nd Gen

Sorry to get off subject,
Max
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Old Jan 31, 2009 | 01:36 PM
  #16  
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From: Kemah, Tx
Car: 1991 z28
Engine: Turbo 310
Transmission: T56
Axle/Gears: D44
Re: c5 and skinnies

ok, so ive been doing my research, and its POSSIBLE to use skinnies and ls1 brakes, with a billet wheel, and a 1/4" spacer or larger (posted in the c5 + spacers + skinnies post in dragracing/autocross), but c5's have a 12.75" rotor, compared to the ls1's 12", but the calipers are the same except minor differences that dont matter in this discussion. the info i cant find is, with the larger rotor, do the c5's have an overall diamerter thats larger than the ls1's, making it impossible to use skinnies with them? and if so,m a solution to that sould be buying ls1 rotors, and using ls1 caliper spacers instead of the c5 ones, but reuse the c5 calipers?
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Old Jan 31, 2009 | 06:20 PM
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From: NE Ohio
Car: 82 Z28
Engine: TT LS
Transmission: 4L80E
Axle/Gears: S60 3.54's
Re: c5 and skinnies

My pics above are C5 rotors and LS1 calipers and brackets. The C5 rotor has a 12.75" diameter, while the LS1's are 12". The only functional difference with the two calipers is the thickness of metal where the bolts hold them onto the caliper bracket. Before doing this, I took my wheels over to a local shop that's working on a C5 to check the fit. The LS1 calipers bolt onto the C5 bracket, and seem to provide better clearance to the wheel than the C5 calipers.
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Old Feb 16, 2009 | 02:17 PM
  #18  
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Re: c5 and skinnies

What size wheels are those pictured with C5 rotors and LS1 calipers?
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Old Feb 16, 2009 | 02:38 PM
  #19  
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From: NE Ohio
Car: 82 Z28
Engine: TT LS
Transmission: 4L80E
Axle/Gears: S60 3.54's
Re: c5 and skinnies

Those are the summit street star 15"x4" wheels in my pic above with the c5 rotor and ls1 caliper in it.
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Old Feb 16, 2009 | 05:02 PM
  #20  
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Re: c5 and skinnies

What about C5 rotors and calipers on that wheel arrangement? (spacers?)
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Old Feb 16, 2009 | 09:01 PM
  #21  
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From: NE Ohio
Car: 82 Z28
Engine: TT LS
Transmission: 4L80E
Axle/Gears: S60 3.54's
Re: c5 and skinnies

Spacers are needed either way, but C5 calipers will also work, they just seem a touch bigger and I believe need some grinding to get part of the ribs off.
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Old Feb 16, 2009 | 10:26 PM
  #22  
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Re: c5 and skinnies

Thanks fast82z!
I can't wait to get the rotors on my lathe.
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Old Feb 25, 2009 | 03:39 PM
  #23  
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From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
Re: c5 and skinnies

Maybe something changes with the brackets needed to put LS1 brakes on a 3rd gen, but I know on 4th gens you can run skinnies just fine. Some require you to grind the caliper some (not my style but I guess it works), others can bolt right on. I know about 20 different people personally that have or have had skinnies on their stock brake equipped ls1 car.
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