X-Mas Came Late!!

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Feb 4, 2005 | 09:31 PM

89 Iroc Z

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Supreme Member

Joined: Aug 2001

Posts: 2,136

Likes: 2

From: Costal Alabama

Car: 1989 Iroc-Z

Engine: 350, ZZ4 equivalent

Transmission: Pro-Built Road Race 700R4

Axle/Gears: 3.23 Dana 44

X-Mas Came Late!!

Look what came in the mail!!!!

I am going to run C4 HD 13inch setup in the front and a LS1 rear setup in the rear. (You may notice that the rotors on the left are LS1 Fronts not rears, they will be exchanged)

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X-Mas Came Late!!-c-documents-settings-rents

Feb 5, 2005 | 09:14 AM

forums_suck

Member

Joined: Sep 2004

Posts: 236

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From: Edmonton

Car: 1983 Z28

Engine: 383

Transmission: 700R4

You got that as a christmass present?

Hmmmmm how do i become part of the family

You do remember your uncle buck now dont you

Feb 5, 2005 | 10:31 AM

ebmiller88

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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

Atta boy Luke!

Ed

Feb 5, 2005 | 12:58 PM

slowTA

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Posts: 659

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From: Clifton, NJ

Car: '88 Formula

Engine: 350 TPI

Transmission: T-5... in need of slight rebuild

Did those Raybestos calipers come loaded with ALL the hardware? I'm looking into doing a rear PBR conversion. I have all used calipers with backing plates, but I'm not sure if I'm missing anything or not. I'm considering either Cardone or Raybestos.

Feb 5, 2005 | 02:33 PM

89 Iroc Z

Thread Starter

Supreme Member

Joined: Aug 2001

Posts: 2,136

Likes: 2

From: Costal Alabama

Car: 1989 Iroc-Z

Engine: 350, ZZ4 equivalent

Transmission: Pro-Built Road Race 700R4

Axle/Gears: 3.23 Dana 44

The LS1 rear calipers came with pads, hardware and caliper carrier.

Feb 5, 2005 | 06:22 PM

anondude13

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Joined: Mar 2003

Posts: 580

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Nice.

If I'm around when you're installing them call me if you could use an extra hand.

Feb 5, 2005 | 10:48 PM

ebmiller88

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Joined: Mar 2001

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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

Slow, let me know if you think you're missing anything, I have a few parts calipers on hand just in case.

Ed

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Feb 6, 2005 | 12:14 PM

86IROCNJ

Supreme Member

Joined: May 2002

Posts: 2,119

Likes: 0

From: Central NJ

Car: 86 Iroc-Z28

Engine: FB385

Transmission: 700r4

I know this may be a tall order, but could you list the part# either on here or via email for me? I want to use LS1 reas and the C4 13"s up front as well. I just got my car on the road two weeks ago and before summer comes I want the suspension to be done. I am looking to do this in the next couple of weeks. I know I have talked with you about brakes before Ed, so if you are still willing to help me out that would be cool. Thanks for any additional info guys. Later

Feb 6, 2005 | 11:45 PM

Justins86bird

TGO Supporter

Joined: Jul 1999

Posts: 3,838

Likes: 4

From: Another world, some other time

Car: 86 LG4 & 92 TBI Firebird

Engine: The Mighty 305!

Transmission: 700R4

Axle/Gears: 3.42

Good setup, just like mine cept I got the GS calipers and plain solid rotors

Now if I could just find the time to install them

Feb 12, 2005 | 12:24 AM

#10

KagA152

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Posts: 1,704

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From: Roscoe, IL

Car: 1991 Trans Am

Engine: LQ4

Transmission: T-56

Axle/Gears: 3.70

what brand rotors are those, and how much were they?

Feb 12, 2005 | 12:57 AM

#11

89 Iroc Z

Thread Starter

Supreme Member

Joined: Aug 2001

Posts: 2,136

Likes: 2

From: Costal Alabama

Car: 1989 Iroc-Z

Engine: 350, ZZ4 equivalent

Transmission: Pro-Built Road Race 700R4

Axle/Gears: 3.23 Dana 44

86IROCNJ,
I am working on a comprehensive part number list I'll have it posted in a few days.

KagA152,
All the parts are Raybestos brand are very competitively priced. I don't know the cost exactly because it was all a Christmas present from relative who works in the business. A good place to get parts for a good price is www.rockauto.com

Feb 12, 2005 | 01:11 AM

#12

KagA152

Supreme Member

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Joined: Apr 2002

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From: Roscoe, IL

Car: 1991 Trans Am

Engine: LQ4

Transmission: T-56

Axle/Gears: 3.70

hmmm, i didnt know raybestos made drilled/slotted rotors. i was wanted to get some for my setup (same as yours) but was kind of weary of the majority of the no name brands because ive heard they like to crack. $70 a rotor seems very reasonable to me

Feb 12, 2005 | 02:09 PM

#13

86IROCNJ

Supreme Member

Joined: May 2002

Posts: 2,119

Likes: 0

From: Central NJ

Car: 86 Iroc-Z28

Engine: FB385

Transmission: 700r4

Thanks a lot 89 Iroc Z, I did a few searches and found a handfull of threads where you and Ed had found that these 13" C4 HD brakes would work, but there was no specific parts to go by. I have a good idea of what all is needed but part#s would be great. The rotors you have there look to be of pretty good quality. I was thinking of going with Eradispeed rotors but I might as well just buy a whole brake kit from Baer for what they want for those rotors. Like I said, your setup is exactly what I had in mind instead of purchasing Baer's front and rear kits. For the most part these are the same/similar. Do you plan on using an adj. prop valve with this setup? Later

Feb 23, 2005 | 03:12 PM

#14

89 Iroc Z

Thread Starter

Supreme Member

Joined: Aug 2001

Posts: 2,136

Likes: 2

From: Costal Alabama

Car: 1989 Iroc-Z

Engine: 350, ZZ4 equivalent

Transmission: Pro-Built Road Race 700R4

Axle/Gears: 3.23 Dana 44

Here are the part numbers for the C4 front brakes. Don't worry I will update it to fill in some blanks and to add the LS1 rear brake part numbers. But this is a good start.

Scroll wayyy down, for some reason this forum software puts a huge gap in.
<TABLE FRAME=BOX CELLSPACING=0 COLS=7 RULES=GROUPS BORDER=1>
<COLGROUP><COL WIDTH=257></COLGROUP>
<COLGROUP><COL WIDTH=31></COLGROUP>
<COLGROUP><COL WIDTH=72></COLGROUP>
<COLGROUP><COL WIDTH=80></COLGROUP>
<COLGROUP><COL WIDTH=119></COLGROUP>
<COLGROUP><COL WIDTH=146></COLGROUP>
<COLGROUP><COL WIDTH=252></COLGROUP>
<TBODY>
<TR>
<TD WIDTH=257 HEIGHT=34 ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD WIDTH=31 ALIGN=CENTER VALIGN=MIDDLE>Qty.</TD>
<TD WIDTH=72 ALIGN=CENTER VALIGN=MIDDLE>GM Part #</TD>
<TD WIDTH=80 ALIGN=CENTER VALIGN=MIDDLE>AC-Delco #</TD>
<TD WIDTH=119 ALIGN=CENTER VALIGN=MIDDLE>Raybestos Part # OEM Grade</TD>
<TD WIDTH=146 ALIGN=CENTER VALIGN=MIDDLE>Raybestos Part # High Preformance</TD>
<TD WIDTH=252 ALIGN=CENTER VALIGN=MIDDLE>Comments</TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=34 ALIGN=CENTER VALIGN=MIDDLE>1989-1994 12-Inch Front C4 Corvette Setup</TD>
<TD COLSPAN=6 ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Left Caliper (JL9)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>12520229</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>172-2139</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>RC4286 / RWC4286</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Right Caliper (JL9)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>12520230</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>172-2140</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>RC4285 / RWC4285</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Left Caliper Carrier (JL9)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>10181205</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Right Caliper Carrier (JL9)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>10181206</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Rotor (JL9)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>2</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>10097654</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>177-684</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>55997</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>BR55997L / BR55997R</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=34 ALIGN=CENTER VALIGN=MIDDLE>1989-1996 13-Inch Front C4 HD Corvette Setup</TD>
<TD COLSPAN=6 ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Left Caliper (J55)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>12520231</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>172-2141</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>RC11226</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Right Caliper (J55)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>12520232</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>172-2142</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>RC11225</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>OR you can use GS caliper</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Left Caliper (GS)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>12528689</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Right Caliper (GS)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>12528690</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Left Caliper Carrier (J55)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>10181207</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Right Caliper Carrier (J55)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>10181208</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Left Rotor (J55)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>10052203</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>177-678</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>56494</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>BR56494L</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Right Rotor (J55)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>10052204</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>177-679</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>56495</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>BR56495R</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>1LE rotor (For Hub)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>5994</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>Used to make hub to mount C4 HD rotor</TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Parts For Both Setups</TD>
<TD COLSPAN=6 ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Brake Pads (Standard)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>12518935</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> 171-735</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>PGD412M</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Brake Pads (Preformance)</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>1</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>12480043</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>BD412M</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD HEIGHT=17 ALIGN=CENTER VALIGN=MIDDLE>Caliper Bolt</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>4</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE>??</TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
<TD ALIGN=CENTER VALIGN=MIDDLE> </TD>
</TR>
</TBODY>
</TABLE>
Edit: Table is back up, I had to use open office because Microsoft excel sucks at outputing HTML.
Last updated: 02-23-2005, More updates to come

Last edited by 89 Iroc Z; Feb 23, 2005 at 04:52 PM.

Feb 23, 2005 | 09:13 PM

#15

89 Iroc Z

Thread Starter

Supreme Member

Joined: Aug 2001

Posts: 2,136

Likes: 2

From: Costal Alabama

Car: 1989 Iroc-Z

Engine: 350, ZZ4 equivalent

Transmission: Pro-Built Road Race 700R4

Axle/Gears: 3.23 Dana 44

- reserved space for LS1 rear brakes part number table -

Feb 28, 2005 | 11:47 AM

#16

DM91RS

Supreme Member

Joined: Jul 2000

Posts: 1,854

Likes: 0

From: Ga

Car: 91 RS

Engine: 305

Transmission: T5

Axle/Gears: 3.73

Are these calipers about the same as the 1LE units? Would the C4HD rotor work with the 1LE caliper and carrier if one fabs the correct adapter bracket. Has this been done before? This would be basically to upgrade the 1LE setup to 13" rotors. And of course hubs would have to be made.

Thanks DM

Feb 28, 2005 | 01:24 PM

#17

ebmiller88

Supreme Member

iTrader: (7)

Joined: Mar 2001

Posts: 6,420

Likes: 5

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

Quote:

Originally posted by DM91RS
Are these calipers about the same as the 1LE units? Would the C4HD rotor work with the 1LE caliper and carrier if one fabs the correct adapter bracket. Has this been done before? This would be basically to upgrade the 1LE setup to 13" rotors. And of course hubs would have to be made.

Thanks DM

IMO, that's really a LOT of work for not much of a difference. Yes the calipers will work but if you want to use 1LE carriers, you'll have to make a whole new bracket for it and then figure out the dimentions with the added space of the hub. Why not just use the HD setup with the 1LE caliper and go from there? IMO it's just not that efficient for you to do all that work when the setups already figured out.

Ed

Feb 28, 2005 | 01:44 PM

#18

DM91RS

Supreme Member

Joined: Jul 2000

Posts: 1,854

Likes: 0

From: Ga

Car: 91 RS

Engine: 305

Transmission: T5

Axle/Gears: 3.73

Quote:

Originally posted by ebmiller88
IMO, that's really a LOT of work for not much of a difference. Yes the calipers will work but if you want to use 1LE carriers, you'll have to make a whole new bracket for it and then figure out the dimentions with the added space of the hub. Why not just use the HD setup with the 1LE caliper and go from there? IMO it's just not that efficient for you to do all that work when the setups already figured out.

Ed

Thanks ED..just wondering what if any of the parts would interchange.

So to make the 13" rotor work I would need: rotors, hubs, caliper carriers and carrier to spindle brackets.

Thanks DM

Feb 28, 2005 | 03:08 PM

#19

ebmiller88

Supreme Member

iTrader: (7)

Joined: Mar 2001

Posts: 6,420

Likes: 5

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

Yes.

Ed

Feb 28, 2005 | 03:38 PM

#20

DM91RS

Supreme Member

Joined: Jul 2000

Posts: 1,854

Likes: 0

From: Ga

Car: 91 RS

Engine: 305

Transmission: T5

Axle/Gears: 3.73

Thanks again Ed. I guess in retrospect I was more interested in if the calipers had the same power and if the only differance was in the rotor diameter. I remember seeing an upgrade years ago in Baer's catalog for a 12" 1LE to 13" brake upgrade and I think it only involved rotors and brackets.