1LE alternative... may just work
07-11-2003, 06:22 PM
#251
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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
Side view showing bracket thickness and caliper carrier clearance. 3/8" thick bracket, no modding to the carrler at all:
07-11-2003, 06:23 PM
#252
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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
I tried to get a close up shot of how well the rotor is centered:
07-28-2003, 03:52 PM
#254
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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
No updates in a while from anyone, huh....
Anyhoo, I tear into the C4 upgrade on my '91 RS tomorrow. I still need to get the banjo bolts for the brake lines but that's about it. I'll be putting all the pics up again on my web page for all to see if interested. I may wait on some new strut mounts but I'll cover all the basics and stuff.
More to come!
Ed
Anyhoo, I tear into the C4 upgrade on my '91 RS tomorrow. I still need to get the banjo bolts for the brake lines but that's about it. I'll be putting all the pics up again on my web page for all to see if interested. I may wait on some new strut mounts but I'll cover all the basics and stuff.
More to come!
Ed
07-28-2003, 03:59 PM
#255
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Car: 87 IROC-Z28
Engine: 305 TPI-New 355 on the engine stand
Transmission: T56
Axle/Gears: 3.73 Eaton posi-Soon a 9" Ford!
Ed,
Please refresh my memory. Are you using C4 front, or rear rotors?
Please refresh my memory. Are you using C4 front, or rear rotors?
07-29-2003, 06:17 AM
#256
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Car: 2018 Camaro SS
Engine: LT1 w/Paxton 1500SL
Well I'm doing the C4 brakes over the winter. A friend of mine did the swap with very good results. He can fab up the bracket for me as well. He used the C4 HD brakes, the ones found on the GS and ZR1's with the 13'' rims and they just barely fit under the 16'' times...just barely but they fit nonetheless 
I can't wait...hell even all of the C4 stuff NEW from GM is still cheaper than what you find used 1LE stuff for
I can't wait...hell even all of the C4 stuff NEW from GM is still cheaper than what you find used 1LE stuff for
07-29-2003, 06:36 AM
#257
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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
C4 rear rotors, Dan. I will continue to work with the upgrade using the front rotors also, but the rear rotors may be the way to go.
Ed
Ed
07-29-2003, 10:57 AM
#258
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Car: 87 IROC-Z28
Engine: 305 TPI-New 355 on the engine stand
Transmission: T56
Axle/Gears: 3.73 Eaton posi-Soon a 9" Ford!
Ed, I figured you were using the rear rotors because of the bracket thickness. But just wanted to check anyway in case I do a set for someone.
08-01-2003, 06:38 PM
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Car: Yes...
Engine: Last time I checked...
Transmission: See "Engine"...
Out of curiosity, how $$$ and TIME do you guys have invested in this?
I just want to compare. I have approximately $1100 to $1200 into my front 1LE set-up but that inlcudes:
1) rebuilt PBR calipers from AZ
2) carriers and brackets from SSPE
3) Timken bearings and seals from AZ
4) Modified spindles from a fellow f-bud
5) slotted rotors from ebay
6) Earl's brake lines from Summit
7) EBC brake pads from Tire Rack
8) Caliper retaining pins from AZ
9) New GM master cylinder from Dal @ Vandevere Pontiac
10) New GM prop valve from GM Parts Direct
11) New banjo bolts from local dealership
12) All parts powder coated and/or yellow zinc plated
For kicks, here's a pic of some of my parts:
I just want to compare. I have approximately $1100 to $1200 into my front 1LE set-up but that inlcudes:
1) rebuilt PBR calipers from AZ
2) carriers and brackets from SSPE
3) Timken bearings and seals from AZ
4) Modified spindles from a fellow f-bud
5) slotted rotors from ebay
6) Earl's brake lines from Summit
7) EBC brake pads from Tire Rack
8) Caliper retaining pins from AZ
9) New GM master cylinder from Dal @ Vandevere Pontiac
10) New GM prop valve from GM Parts Direct
11) New banjo bolts from local dealership
12) All parts powder coated and/or yellow zinc plated
For kicks, here's a pic of some of my parts:
Last edited by BretD 88GTA; 08-01-2003 at 07:55 PM.
08-01-2003, 06:46 PM
#261
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Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
Time: I was fortunate enough to do all my machine work myself but it took me about 12-13 hours for all: spindles (1 hr), machine the rotors into hubs (4 hrs), and make the brackets (8 hrs: I made 4 sets, one set from stainless). Spindles are the easiest, making the hubs takes a bit more time for the lathe to do the work, but since I did the brackets by hand, they were the most time consuming. I am looking into having them made, should I need to do so again.
$$$: My entire C4 setup now installed on the car ran me $252, plus or minus $10 for little things. See my new thread on the install, I gave a price breakdown. I also did the 1LE install on my Iroc and I came up with right around $800 for that system, and they're almost the same, except I have to repack bearings on the 1LE system when I replace rotors.
Ed
$$$: My entire C4 setup now installed on the car ran me $252, plus or minus $10 for little things. See my new thread on the install, I gave a price breakdown. I also did the 1LE install on my Iroc and I came up with right around $800 for that system, and they're almost the same, except I have to repack bearings on the 1LE system when I replace rotors.
Ed
Last edited by ebmiller88; 01-24-2006 at 11:08 PM.
08-01-2003, 06:52 PM
#262
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Car: 87 IROC-Z28
Engine: 305 TPI-New 355 on the engine stand
Transmission: T56
Axle/Gears: 3.73 Eaton posi-Soon a 9" Ford!
Well as I recall I had around $400 in my C4 setup with used wrecking yard parts. And like Ed I used the pads that came with the calipers since they were in such great shape. But I bought extra spindles and rotors to play around with, so that was an added expense.
I did the work myself on the rotors and brackets. I own a machine shop, and Ed had access to machine tools to do to do his work on, so this is the reason why we are in this so cheaply. Otherwise you would have to add around $200 for the modified rotors/hubs, and caliper brackets. I also already had the braided lines, so there was a $70 savings right there.
I did the work myself on the rotors and brackets. I own a machine shop, and Ed had access to machine tools to do to do his work on, so this is the reason why we are in this so cheaply. Otherwise you would have to add around $200 for the modified rotors/hubs, and caliper brackets. I also already had the braided lines, so there was a $70 savings right there.
08-01-2003, 07:20 PM
#263
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looks awesome
I guess the LS1/C5 thread disappeared huh ?
could we possibly start another and just keep it decent so it wouldn't get deleted , this C4 mod is great but a lot of us has 17" wheels and bigger is better :-) it was a great thread that for some unknown reason got deleted
I guess the LS1/C5 thread disappeared huh ?
could we possibly start another and just keep it decent so it wouldn't get deleted , this C4 mod is great but a lot of us has 17" wheels and bigger is better :-) it was a great thread that for some unknown reason got deleted
08-01-2003, 08:58 PM
#264
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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
it was a great thread that for some unknown reason got deleted
Ed
08-01-2003, 11:03 PM
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Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
it wasnt deleted.... no one replied in it for awhile, so when the sticky was taken off, it flew back a few pages..
https://www.thirdgen.org/techbb2/sho...hreadid=183169
im going to attempt the LS1 brake swap..... mostly because if i have the LS1 fronts, and swap in a LS1 rear, i then can set everything like a stock LS1 setup... and later on when i have the money, i can get some eradispeed rotors..
then i have big brakes that look cool too...
i just started working at a machine shop, so i can finally cut my own parts.....
now i just need to figure out how im going to do this.....
https://www.thirdgen.org/techbb2/sho...hreadid=183169
im going to attempt the LS1 brake swap..... mostly because if i have the LS1 fronts, and swap in a LS1 rear, i then can set everything like a stock LS1 setup... and later on when i have the money, i can get some eradispeed rotors..
then i have big brakes that look cool too...
i just started working at a machine shop, so i can finally cut my own parts.....
now i just need to figure out how im going to do this.....
03-08-2005, 09:52 AM
#266
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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
Anyone looking for this thread, here it is.
Ed
Ed
Last edited by ebmiller88; 01-24-2006 at 11:17 PM.
03-08-2005, 01:29 PM
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Car: 92 Camaro RS
Engine: 305 TBI
Transmission: T-5
I was planning on using a bandsaw to rough mine out before I finish the lathe work, I would not try a plasma cutter because it might make the cast iron VERY hard where its cut at and that would make it much harder to machine in the lathe, I've tried to machine some cast iron parts that had been welded on and anytime the carbide tool got close to a weld it would dull the insert.
06-02-2005, 11:01 AM
#270
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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
Did you read this thread at all? It's on Page 2 about half way down the page...
Ed
Ed
06-02-2005, 11:54 AM
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Car: 83 firebird s/e w/ttops and a/c
Engine: 2.5 iron duke/ tech IV
Transmission: 5 speed
so i would need ...
2 hubs machined from stock rotors redrilled and studded for c4
rotors
2 stock c4 calipers
2 custom brackets 1/4 inch wide
is that all?
2 hubs machined from stock rotors redrilled and studded for c4
rotors
2 stock c4 calipers
2 custom brackets 1/4 inch wide
is that all?
06-02-2005, 12:05 PM
#272
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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
Not quite... here you go:
You won't have to redrill the rotors, they slide right on;
You'll need longer studs but they press into the stock bolt holes with no mods needed;
C4 brakes: Calipers, carriers, pads, guide pins, and longer brake lines;
3/8" brackets for standard 12" brakes, 1/2" brackets for HD 13" brakes;
bolts for the brackets and Metric bolts for the carriers;
modded spindles.
Ed
You won't have to redrill the rotors, they slide right on;
You'll need longer studs but they press into the stock bolt holes with no mods needed;
C4 brakes: Calipers, carriers, pads, guide pins, and longer brake lines;
3/8" brackets for standard 12" brakes, 1/2" brackets for HD 13" brakes;
bolts for the brackets and Metric bolts for the carriers;
modded spindles.
Ed
06-02-2005, 08:53 PM
#274
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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
Yep, it should...."All" 15s does give you a wide range of wheels tho...
Ed
Ed
06-13-2005, 09:37 PM
#275
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Car: 1989 Iroc-Z
Engine: 350, ZZ4 equivalent
Transmission: Pro-Built Road Race 700R4
Axle/Gears: 3.23 Dana 44
Also if you go with HD's you can use a 3/8 inch bracket and two 1/8 inch thick washers as spacers, that's the way I am doing it.
06-21-2006, 01:29 PM
#276
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Car: Firebird 88
Engine: 406
Transmission: th400
Axle/Gears: 3.50
Can anybody send me CAD file for a c4 bracket?
bialooki@wp.pl
bialooki@wp.pl
06-23-2006, 11:13 PM
#277
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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
I've got plenty of brackets but no CAD file, sorry.
Ed
Ed
10-10-2008, 10:07 AM
#279
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Car: 91 Firebird
Engine: 6.0
Transmission: T56
Axle/Gears: 3.73
Re: 1LE alternative... may just work
Can someone sticky this and perhaps prune some of the unneccessary posts out???
-jason
-jason
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