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 Post subject: Re: 1LE brakes
 Post Posted: Wed Sep 19, 2012 8:37 am 
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Frequent Racer

Joined: Tue May 27, 2003 1:34 pm
Posts: 511
Location: Southeast Missouri
What master cylinder is everyone using? I did this swap in 2003 and upgraded to a larger master cylinder as well which really helped pedal feel, but I can't find the p/n. Ready to do the swap on another car.

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88 Monte SS: Black/maroon. No-go showboat.
80 Malibu 2dr. Gold/saddle. Slowly going from V6 car to a lot more fun.
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 Post subject: Re: 1LE brakes
 Post Posted: Wed Sep 19, 2012 3:57 pm 
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Amateur Racer

Joined: Sat Apr 10, 2010 5:35 pm
Posts: 131
Location: ont canada
anyone know the rpo code in the glove box for the 12 inch brake package on 78-90 full size chev cars


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 Post subject: Re: 1LE brakes
 Post Posted: Wed Sep 19, 2012 8:46 pm 
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MalibuRacing Junkie
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Joined: Sat May 15, 2004 7:26 am
Posts: 14896
Location: North Jersey
malicad wrote:
All you need are spindles from those years of a Caprice. Period. Doesn't have to be a wagon.


But they do have to be for 12" brakes...

Tommy

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20k mile '80 Malibu, currently undergoing long term factory style install LS6 454, cowl induction, Muncie 4 speed.
Full Global West suspension 12" front/11" rear disc brakes, 9" 3.70 posi.

"The older I get, the faster I was"

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 Post subject: Re: 1LE brakes
 Post Posted: Wed Sep 19, 2012 9:04 pm 
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MalibuRacing Junkie
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Joined: Sun Oct 21, 2007 8:07 am
Posts: 3927
Location: Lederach
The RPO is 9C1

I know 3 people who did this swap and each used different master cylinders:
1988 9C1 B body aluminum; 1-inch bore
stock 15⁄16-inch bore
Raybestos B body (JMC39328); 1⅛-inch bore


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 Post subject: Re: 1LE brakes
 Post Posted: Mon Jan 07, 2013 11:09 pm 
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Daily Driver

Joined: Sun Jul 15, 2007 10:17 pm
Posts: 36
Location: New Berlin, Wisconsin
I did the 1LE swap back in 2002 and swapped in a late 80's era b-body master and booster. Made a huge difference too.

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 Post subject: Re: 1LE brakes
 Post Posted: Fri Feb 15, 2013 7:11 pm 
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Daily Driver

Joined: Sat Feb 09, 2013 2:12 pm
Posts: 44
Location: Pittsburgh, PA 15241
I have them on my El camino, stops on a dime, I also have the lower tubular arms

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1986 El Camino
IROC Body Kit
LS3 Crate Engine / 6 speed
Rob
Pittsburgh, PA 15241
rwolf15241@yahoo.com
412-638-2639


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 Post subject: Re: 1LE brakes
 Post Posted: Sun Feb 17, 2013 12:05 pm 
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MalibuRacing Junkie
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Joined: Sat May 15, 2004 7:26 am
Posts: 14896
Location: North Jersey
t5montecarlo wrote:
The RPO is 9C1


You can't use 9C1 spindles. The ball joint taper is wrong. You need tow package car 12" rotor spindles.

As per Global West:

"Tech tip: If you are looking for 12 inch discs off of a donor car, do not use police or taxicab spindles. The lower ball joint tapers are too big and will not work. The ball joints for those vehicles can not be machined down to fit your control arm either.

The following lists of donor cars are used for GM tall spindle conversions. This conversion, in conjunction with our tubular upper control arms, changes the geometry curve and creates a negative camber curve. We highly recommend the system if you are looking for superior handling. They are not used for drag racing applications.

Donor cars with tall spindles and 12 inch disc brake rotors:

Buick full size: LeSabre wagon/Electra wagon 77-94

Cadillac Fleetwood/Deville 77-84 Brougham/Fleetwood 85-94

Chevy full size: Bel Air/Biscayne/Caprice/Impala 77-96

Olds: 98/Delta88/Delta 88 wagon 77-92

Pontiac full size: Bonneville/Catalina/Grandville 77-86

Important: There are two different types of 12 inch disc brakes spindles. One version uses a small outer bearing measuring .750. The second type uses a larger outer bearing measuring .850. Use the larger diameter outer bearing spindle because the rotor you are going to need is off a 1988-92 1LE Camaro/Firebird GM part #18016035. These rotors have the correct bolt pattern 5 on 4 3/4 bolt circle, however the rotors use 12mm studs rather than 7/16 studs. You need to change the studs over to 7/16. We use a DBS-42 kit for this conversion."


Tommy

_________________
20k mile '80 Malibu, currently undergoing long term factory style install LS6 454, cowl induction, Muncie 4 speed.
Full Global West suspension 12" front/11" rear disc brakes, 9" 3.70 posi.

"The older I get, the faster I was"

Image


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 Post subject: Re: 1LE brakes
 Post Posted: Sun Feb 24, 2013 8:37 pm 
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Joined: Wed Nov 24, 2010 12:41 pm
Posts: 10
Location: cleveland,oh
if you just want to upgrade to bigger brakes,why not use the 98-04 4x2 s10 blazer spindles and brakes? bigger rotors and dual piston calipers.if you want bigger that the stock blazer the ls1 f-bodys and even corvette rotors and calipers work with the blazer spindles by changing the caliper mount.i understand the taller spindle/negative camber deal.i thought the OP wanted bigger brakes on a budget.


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 Post subject: Re: 1LE brakes
 Post Posted: Thu Mar 07, 2013 9:08 pm 
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Daily Driver

Joined: Sat Feb 09, 2013 2:12 pm
Posts: 44
Location: Pittsburgh, PA 15241
Anyone do the rear LE Brake swap on a Ford 9 inch??? I need info on brackets before I order the rear!!

_________________
1986 El Camino
IROC Body Kit
LS3 Crate Engine / 6 speed
Rob
Pittsburgh, PA 15241
rwolf15241@yahoo.com
412-638-2639


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 Post subject: Re: 1LE brakes
 Post Posted: Fri Nov 01, 2013 6:42 am 
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MalibuRacing Junkie
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Joined: Sat May 15, 2004 7:26 am
Posts: 14896
Location: North Jersey
12" rotors with a front caliper is WAAAY too much rear brake...

Tommy

_________________
20k mile '80 Malibu, currently undergoing long term factory style install LS6 454, cowl induction, Muncie 4 speed.
Full Global West suspension 12" front/11" rear disc brakes, 9" 3.70 posi.

"The older I get, the faster I was"

Image


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