C5 calipers, LS1 rotors, stock rims
03-10-2006, 08:14 PM
#51
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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
Caliper fitup showing the trimming on the C5 caliper. Nothing major, just took the two lower ribs off:
03-10-2006, 08:16 PM
#52
03-11-2006, 02:41 AM
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Car: 1991 Camaro RS
Engine: 383 LT1
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Those look great Ed!
Cant wait until I get them. Those will look awesome on my SuperStop drilled/slotted rotors.
Ill post pics when I get them on the car.
Cant wait until I get them. Those will look awesome on my SuperStop drilled/slotted rotors.
Ill post pics when I get them on the car.
03-14-2006, 02:15 AM
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I just got the above pictured brakes from Ed on Saturday.
Ed did a great job on them and I couldnt be happier. The quality and completeness of the kit is fantastic!
Thanks Ed!
Ed did a great job on them and I couldnt be happier. The quality and completeness of the kit is fantastic!
Thanks Ed!
03-14-2006, 06:02 AM
#56
03-14-2006, 08:04 AM
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Car: 90 IROC 5.7 hardtop
Engine: L98
Transmission: T5 swap
Axle/Gears: Yup -- they still work
Originally posted by ebmiller88
Yes, a C4 front rotor can be used with a C5 caliper. There's a bit of room to be taken up by the pistons and pads but it works. Here's a setup I did for a MCSS using a 13" HD rotor and C5 caliper:
Yes, a C4 front rotor can be used with a C5 caliper. There's a bit of room to be taken up by the pistons and pads but it works. Here's a setup I did for a MCSS using a 13" HD rotor and C5 caliper:
Ed,
Do you sell a setup for the C4 HD rotor and C5 caliper with 16 inch IROC RIMs?
thx
RP
03-14-2006, 08:39 AM
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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
Originally posted by palric
Ed,
Do you sell a setup for the C4 HD rotor and C5 caliper with 16 inch IROC RIMs?
thx
RP
Ed,
Do you sell a setup for the C4 HD rotor and C5 caliper with 16 inch IROC RIMs?
thx
RP
Ed
03-14-2006, 09:56 AM
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Car: 90 IROC 5.7 hardtop
Engine: L98
Transmission: T5 swap
Axle/Gears: Yup -- they still work
Originally posted by ebmiller88
I can, I'll just have to get the bracket done. I'll put that on my list. What's your timeframe? I'm not sure if they'll clear the 16" wheel though, they're tight enough on the 12" LS rotor. I can do a test fitup though, slide the caliper and carrier over the rotor and try to fit it inside the wheels I have.
Ed
I can, I'll just have to get the bracket done. I'll put that on my list. What's your timeframe? I'm not sure if they'll clear the 16" wheel though, they're tight enough on the 12" LS rotor. I can do a test fitup though, slide the caliper and carrier over the rotor and try to fit it inside the wheels I have.
Ed
thx
RP
Last edited by palric; 04-07-2006 at 07:27 PM.
03-14-2006, 06:16 PM
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Would the Proportioning valve of a rear drum car work with C5 fronts and ls1 rears, anyways what are the percentages on this.
I also have a c5 master cylinder, would it be worth my time to put this on?
I also have a c5 master cylinder, would it be worth my time to put this on?
03-14-2006, 07:26 PM
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Car: 1989 Camaro RS
Engine: ZZ4 350
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Axle/Gears: BW 9-bolt w/3.73
Originally posted by cobb
Would the Proportioning valve of a rear drum car work with C5 fronts and ls1 rears, anyways what are the percentages on this.
Would the Proportioning valve of a rear drum car work with C5 fronts and ls1 rears, anyways what are the percentages on this.
03-15-2006, 06:57 AM
#62
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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
Originally posted by MurcoRS
You'll need a disc/disc combo valve for these to work their best. Drum-brake valves direct up to 100 lbs of pressure to the rear before engaging the fronts - not good!
You'll need a disc/disc combo valve for these to work their best. Drum-brake valves direct up to 100 lbs of pressure to the rear before engaging the fronts - not good!
Ed
03-25-2006, 08:09 PM
#63
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Car: 1991 Z28 & 1992 Z28
Engine: LB9 & L98
Transmission: T56 & T56
Axle/Gears: 4.10s & 3.23s
Does grinding those fins off effect structural integrity or cooling efficiency? And it may not be a big deal, but on a 16" inch wheel the clearance looks scarry. If any road debris wedged itself between the caliper and the wheel, what would happen?
03-27-2006, 01:03 PM
#64
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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 kept the grinding/cutting to the bare minimum, and it won't effect performance or operation. If you plan on pushing your car where overworking the C5 calipers are a concern, better move up to Wilwoods or something better suited for racing. For a performance driven car, the C5 caliper will hold up. It's the same casting offered by Baer on it's GT and GT Plus kits.
Ed
Ed
03-28-2006, 10:22 AM
#65
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Car: 1990 RS/2000 Z28
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Transmission: 4L60/4L60E
Axle/Gears: 10 bolt/3.23
carriers
What does the ls1 brake kit I here you sell come with and how much. PM me Im very interested in purchasing what I can from you to make the swap with ease.
03-28-2006, 10:35 AM
#66
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ed
I have the new ls1 rotors, pads, bearings and possibly make my own hubs. I have no idea what lugs to use though.
04-02-2006, 09:03 PM
#67
Originally Posted by Dave_Jones
While Ed is busy fitting up parts, I'll throw in a comment or two about brake bias with this setup.
If you sit down and do the math with the piston area and lever arm length, you'll note that the C5 calipers will shift the brake bias about 5% more to the rear, compared to LS1 calipers, all else being equal.
What that means is, this brake setup should go together well with either the 1LE/LT1 PBR rear discs, or the old Delco-Morraine iron calipers. However, if you already have LS1 brakes on the rear, and mount the C5 calipers on a 12" front rotor, you'll end up with a LOT of rear brake bias.
Just to throw out some numbers, here's the approximate % of brake force on the front wheels with some common combos.
1LE front & rear = 65%
LS1 front & rear = 65%
LS1 front, iron rear = 71%
LS1 front, 1LE rear = 72%
C5/12" front, iron rear = 66%
C5/12" front, 1LE rear = 67%
C5/12" front, LS1 rear = 61%
(figures neglect proportioning valve effect and weight transfer, also assume same pad cf on both ends for simplicity. The point of the exercise is to look at how the figures compare to one another, rather than worrying about the absolute values.)
So IMHO, if you have LS1 rear brakes, and want to use the C5/12" setup up front, you'd better plan on adding an aftermarket proportioning valve to dial out some rear brake. (EDIT: I consider that the 65% F/R setups -- 1LE and LS1 pure -- as being about the max permissible rear bias, IOW *just barely* OK. By that I mean that people occasionally have problems with either rear wheel lockup or wheel hop, with those setups. Not saying that everyone experiences that, since it can be avoided or cured by the right prop valve, suspension setup, or pad selection -- but it happens often enough to indicate that's about as much rear bias as most F-bodies can effectively tolerate, IMHO.)
Also, if you prefer less pedal effort, especially on a non-track car where caliper spread isn't a concern, the LS1 calipers might be a better choice. I'm pointing this out, since some people seem to complain that the 1LE setup requires too much pedal effort -- if you're one of those people, you'd probably be happier with the LS1s than the C5s, since the larger piston on the LS1s provides much more hydraulic assist.
All IMHO, and YMMV of course
If you sit down and do the math with the piston area and lever arm length, you'll note that the C5 calipers will shift the brake bias about 5% more to the rear, compared to LS1 calipers, all else being equal.
What that means is, this brake setup should go together well with either the 1LE/LT1 PBR rear discs, or the old Delco-Morraine iron calipers. However, if you already have LS1 brakes on the rear, and mount the C5 calipers on a 12" front rotor, you'll end up with a LOT of rear brake bias.
Just to throw out some numbers, here's the approximate % of brake force on the front wheels with some common combos.
1LE front & rear = 65%
LS1 front & rear = 65%
LS1 front, iron rear = 71%
LS1 front, 1LE rear = 72%
C5/12" front, iron rear = 66%
C5/12" front, 1LE rear = 67%
C5/12" front, LS1 rear = 61%
(figures neglect proportioning valve effect and weight transfer, also assume same pad cf on both ends for simplicity. The point of the exercise is to look at how the figures compare to one another, rather than worrying about the absolute values.)
So IMHO, if you have LS1 rear brakes, and want to use the C5/12" setup up front, you'd better plan on adding an aftermarket proportioning valve to dial out some rear brake. (EDIT: I consider that the 65% F/R setups -- 1LE and LS1 pure -- as being about the max permissible rear bias, IOW *just barely* OK. By that I mean that people occasionally have problems with either rear wheel lockup or wheel hop, with those setups. Not saying that everyone experiences that, since it can be avoided or cured by the right prop valve, suspension setup, or pad selection -- but it happens often enough to indicate that's about as much rear bias as most F-bodies can effectively tolerate, IMHO.)
Also, if you prefer less pedal effort, especially on a non-track car where caliper spread isn't a concern, the LS1 calipers might be a better choice. I'm pointing this out, since some people seem to complain that the 1LE setup requires too much pedal effort -- if you're one of those people, you'd probably be happier with the LS1s than the C5s, since the larger piston on the LS1s provides much more hydraulic assist.
All IMHO, and YMMV of course
04-08-2006, 08:22 PM
#68
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1LE to C5?
Hi Ed, not sure if you have had this question before.. if so just tell me to go search better.. 
I have the spindle mods already done to upgrade the stock 92 spindles to 1LE. The 1LE brakes work well but I want more. My question is, are the mods to the spindle for the C5 conversion documented somewhere, and are you aware of a path from a 1LE modded spindle to a C5 modded one or do I need to start over? (I knoe a different cold-steel adapter is needed, but what about the hole sizes/locations.. same as 1LE I can hope?
Thanks
{warning shameless advertising ahead}.. BTW, I don't advertize much on TGO (or anywhere else.. and I have not sold many lately because people don't know how to search for what they want anymore haha) but I sell these in you want to make your T56 conversion 100% professional..
Third Generation Camaro / Z28 / Iroc 6-speed T-56 shifter H-pattern Plate
looking forward to bigger brakes..
I have the spindle mods already done to upgrade the stock 92 spindles to 1LE. The 1LE brakes work well but I want more. My question is, are the mods to the spindle for the C5 conversion documented somewhere, and are you aware of a path from a 1LE modded spindle to a C5 modded one or do I need to start over? (I knoe a different cold-steel adapter is needed, but what about the hole sizes/locations.. same as 1LE I can hope?
Thanks
{warning shameless advertising ahead}.. BTW, I don't advertize much on TGO (or anywhere else.. and I have not sold many lately because people don't know how to search for what they want anymore haha) but I sell these in you want to make your T56 conversion 100% professional..
Third Generation Camaro / Z28 / Iroc 6-speed T-56 shifter H-pattern Plate
looking forward to bigger brakes..
04-08-2006, 08:23 PM
#69
Originally Posted by 92Z-666
Hi Ed, not sure if you have had this question before.. if so just tell me to go search better..
I have the spindle mods already done to upgrade the stock 92 spindles to 1LE. The 1LE brakes work well but I want more. My question is, are the mods to the spindle for the C5 conversion documented somewhere, and are you aware of a path from a 1LE modded spindle to a C5 modded one or do I need to start over? (I knoe a different cold-steel adapter is needed, but what about the hole sizes/locations.. same as 1LE I can hope?
Thanks
{warning shameless advertising ahead}.. BTW, I don't advertize much on TGO (or anywhere else.. and I have not sold many lately because people don't know how to search for what they want anymore haha) but I sell these in you want to make your T56 conversion 100% professional..
Third Generation Camaro / Z28 / Iroc 6-speed T-56 shifter H-pattern Plate
looking forward to bigger brakes..
I have the spindle mods already done to upgrade the stock 92 spindles to 1LE. The 1LE brakes work well but I want more. My question is, are the mods to the spindle for the C5 conversion documented somewhere, and are you aware of a path from a 1LE modded spindle to a C5 modded one or do I need to start over? (I knoe a different cold-steel adapter is needed, but what about the hole sizes/locations.. same as 1LE I can hope?
Thanks
{warning shameless advertising ahead}.. BTW, I don't advertize much on TGO (or anywhere else.. and I have not sold many lately because people don't know how to search for what they want anymore haha) but I sell these in you want to make your T56 conversion 100% professional..
Third Generation Camaro / Z28 / Iroc 6-speed T-56 shifter H-pattern Plate
looking forward to bigger brakes..
04-08-2006, 08:34 PM
#70
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Originally Posted by MurcoRS
You'll need a disc/disc combo valve for these to work their best. Drum-brake valves direct up to 100 lbs of pressure to the rear before engaging the fronts - not good!
I think the 4th gen disc rears pull the pads away from the disc just like drums do when not in use.. you DO want all 4 coming on close to the same time and the rear acting first is a good thing when there's an airgap astern. I read some huge tech on the whole thing and as with anything on the net.. grain-o-salt...
sorry I have no link..
04-08-2006, 08:42 PM
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Originally Posted by Camaroz29
My car has that plate, it looks great!
04-08-2006, 08:44 PM
#72
Originally Posted by 92Z-666
Great Thanks! I think like 3 people have contacted me in 8 mos.. probably time to spread the word a little huh.. I have my stock back up to 22 or so.
04-08-2006, 09:34 PM
#73
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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
Originally Posted by 92Z-666
Hi Ed, not sure if you have had this question before.. if so just tell me to go search better..
I have the spindle mods already done to upgrade the stock 92 spindles to 1LE. The 1LE brakes work well but I want more. My question is, are the mods to the spindle for the C5 conversion documented somewhere, and are you aware of a path from a 1LE modded spindle to a C5 modded one or do I need to start over? (I know a different cold-steel adapter is needed, but what about the hole sizes/locations.. same as 1LE I can hope?
Thanks....looking forward to bigger brakes..
I have the spindle mods already done to upgrade the stock 92 spindles to 1LE. The 1LE brakes work well but I want more. My question is, are the mods to the spindle for the C5 conversion documented somewhere, and are you aware of a path from a 1LE modded spindle to a C5 modded one or do I need to start over? (I know a different cold-steel adapter is needed, but what about the hole sizes/locations.. same as 1LE I can hope?
Thanks....looking forward to bigger brakes..
Hey there...you sould be able to install C5 brackets on your 1LE modded spindles without any issues, just make sure that your brackets are drilled accordingly for the bolts you will use to install them, the holes are in the same locations.
Ed
04-08-2006, 11:01 PM
#74
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Originally Posted by ebmiller88
Hey there...you sould be able to install C5 brackets on your 1LE modded spindles without any issues, just make sure that your brackets are drilled accordingly for the bolts you will use to install them, the holes are in the same locations.
Ed
Ed
awesone..I'm THERE.. gotta find your order page now..
04-09-2006, 04:12 AM
#75
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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 will depend on what size bolt your 1LE brackets use...do you know if it's metric or not? I drill my brackets for a few different bolt sizes depending on application so get with me and we'll work it out...send me a PM or e-mail me. I'm pressed for time at work until next week but I WILL get back to you as soon as I can.
Ed
Ed
04-09-2006, 08:53 AM
#76
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I'll PM, but for the benefit of others.. the 1LE setup as done per Dan Burke's instructions uses
GM PN 11508133 Bolts: adapter to spindle (12mm x 1.75)
Here are the GM adapter PNs if you wanted to get real percise and duplicate:
10132829 LH
10132830 RH
at least one is impossible to get from GM because they're gone (I may have the adaptors confused with the cage but the 2 adaptors used to differ in price by like 25 bucks for some reason).
Dan's site How to Upgrade to 1LE brakes
If you can end up working out an exactly correct size I think lots of the existing 1LE people would jump on it. I'll use dial calipers on one of mine and report back..
GM PN 11508133 Bolts: adapter to spindle (12mm x 1.75)
Here are the GM adapter PNs if you wanted to get real percise and duplicate:
10132829 LH
10132830 RH
at least one is impossible to get from GM because they're gone (I may have the adaptors confused with the cage but the 2 adaptors used to differ in price by like 25 bucks for some reason).
Dan's site How to Upgrade to 1LE brakes
If you can end up working out an exactly correct size I think lots of the existing 1LE people would jump on it. I'll use dial calipers on one of mine and report back..
Last edited by 92Z-666; 04-09-2006 at 09:25 AM.
04-10-2006, 06:56 AM
#77
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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 have 1LEs on my Iroc and used Dan's page for reference so I'm familiar with the setup...the C5 brackets will bolt on without any issues, simple bracket swap.
Ed
Ed
04-10-2006, 07:54 AM
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Car: 1989 Camaro RS
Engine: ZZ4 350
Transmission: T-5
Axle/Gears: BW 9-bolt w/3.73
Originally Posted by 92Z-666
The effect when you use a disc CV with an airgap in the rears is that the fronts lock up first and you just slide during a panic.
I think the 4th gen disc rears pull the pads away from the disc just like drums do when not in use.. you DO want all 4 coming on close to the same time and the rear acting first is a good thing when there's an airgap astern.
I think the 4th gen disc rears pull the pads away from the disc just like drums do when not in use.. you DO want all 4 coming on close to the same time and the rear acting first is a good thing when there's an airgap astern.
The combination valve on PBR rear-disc 3rd gen cars (89-92) has a metering valve set at 5 pounds, be it a 1LE or standard disc/disc set-up. The 1LE cars do have a rear prop-valve setting higher than any other GM 4-wheel disc ever built before ABS, but I cannot tell you how much different as I don't know. I do know that the 1LE combo valve kept the GM liability attorneys up at night!!
04-14-2006, 12:16 PM
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Car: 1989 Camaro RS
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Transmission: T-5
Axle/Gears: BW 9-bolt w/3.73
Originally Posted by Camaroz29
I just ordered my C5 front kit, can anyone recommend a good prop valve?
I'll get you a part number as soon as I find the receipt, ARGH!!!
04-23-2006, 10:37 AM
#81
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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
Well here's a bit of good news, too bad I didn't find this out sooner, it would have kept me from cutting and grinding on a new C5 caliper...I HATE grinding on new parts.
The new C6 stock calipers are a direct swap for C5 calipers and they don't have the 4 cast ribs on the bottom of the caliper like the C5s do, no clearance issues at all. They're still right at $100 new so this is another VERY good setup to consider for certain 16" wheels...I might install them myself!
I'll try to get pics up later this weekend..
Ed
The new C6 stock calipers are a direct swap for C5 calipers and they don't have the 4 cast ribs on the bottom of the caliper like the C5s do, no clearance issues at all. They're still right at $100 new so this is another VERY good setup to consider for certain 16" wheels...I might install them myself!
I'll try to get pics up later this weekend..
Ed
04-23-2006, 10:57 AM
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Car: 86 MCSS, 03 S10, 99 MX-5
Engine: 5.7, 2.2, 1.8
Transmission: 2004R, NV1500, Miata 5-spd
Axle/Gears: 3.73, 4.10, 4.30
Ed,
Do you have part numbers for the new stock C6 calipers? Is the abutment bracket the same? Thanks.
Billy
Do you have part numbers for the new stock C6 calipers? Is the abutment bracket the same? Thanks.
Billy
04-23-2006, 11:03 AM
#83
Originally Posted by ebmiller88
Well here's a bit of good news, too bad I didn't find this out sooner, it would have kept me from cutting and grinding on a new C5 caliper...I HATE grinding on new parts.
The new C6 stock calipers are a direct swap for C5 calipers and they don't have the 4 cast ribs on the bottom of the caliper like the C5s do, no clearance issues at all. They're still right at $100 new so this is another VERY good setup to consider for certain 16" wheels...I might install them myself!
I'll try to get pics up later this weekend..
Ed
The new C6 stock calipers are a direct swap for C5 calipers and they don't have the 4 cast ribs on the bottom of the caliper like the C5s do, no clearance issues at all. They're still right at $100 new so this is another VERY good setup to consider for certain 16" wheels...I might install them myself!
I'll try to get pics up later this weekend..
Ed
04-23-2006, 11:51 AM
#84
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i am doing that setup up right now, no ribs, the casting is thicker, looks bigger but its not, but you can feel how thick it is compared to the c5 and the corvette letter in a lot bigger too. i just sold my c5 calipers
part # 88964164 for the left side
part # 88964165 for the right, but not sure on this part number
$113 shipped from gmpartsdirect or
$103 plus shipping from fred bean
part # 88964164 for the left side
part # 88964165 for the right, but not sure on this part number
$113 shipped from gmpartsdirect or
$103 plus shipping from fred bean
04-25-2006, 08:20 PM
#85
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Car: 90 camaro
Engine: 305
Transmission: 700R4
I am doing c5 front and ls1 rear brakes for a rear drum car and would it be necessary to use a 4th gen master cylinder and what proporting valve would i use for this. Thanks Tony 90 iroc
04-25-2006, 08:24 PM
#86
Originally Posted by cobb
I am doing c5 front and ls1 rear brakes for a rear drum car and would it be necessary to use a 4th gen master cylinder and what proporting valve would i use for this. Thanks Tony 90 iroc
04-25-2006, 09:30 PM
#87
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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
Here's some pics of the comparison of C5 and C6 calipers, black one is C5, gray is stock C6. Note the lack of ribs under the pistons and the thicker casting on the back of the caliper.
Ed
Ed
04-26-2006, 03:22 PM
#88
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Car: 90 IROC 5.7 hardtop
Engine: L98
Transmission: T5 swap
Axle/Gears: Yup -- they still work
Originally Posted by ebmiller88
Yes, a C4 front rotor can be used with a C5 caliper. There's a bit of room to be taken up by the pistons and pads but it works. Here's a setup I did for a MCSS using a 13" HD rotor and C5 caliper:
Percentage?
thx
RP
Last edited by palric; 04-26-2006 at 03:26 PM.
04-26-2006, 11:51 PM
#89
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Car: 91 Formula WS6 (Black, T-Tops)
Engine: 383 MiniRam (529 HP, 519 TQ - DD2K)
Transmission: Built '97 T56, Pro 5.0, CF-DF
Axle/Gears: 4.11 posi Ford 9"
Here's a combination for ya: Ford 9" with 95 or so Explorer rear discs, and wanting better brakes for the front. Not a cross country racer, just a daily driver 383 SuperRam that occasionally goes to the strip. My 91 Formula WS6 had fromt and rear discs to begin with, and I'm still using the factory master and prop valve.
From what I'm reading here, it sounds like the LS1 fronts are maybe the best choice for my situation but feel free to recommend what you think is best, Ed. Plus let me know if I'll need to change master cyl or prop valve. Hopefully the wheel I sent ya can be used to verify this will work using my 16" GTA wheels.
From what I'm reading here, it sounds like the LS1 fronts are maybe the best choice for my situation but feel free to recommend what you think is best, Ed. Plus let me know if I'll need to change master cyl or prop valve. Hopefully the wheel I sent ya can be used to verify this will work using my 16" GTA wheels.
04-28-2006, 01:26 PM
#90
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Car: 86 MCSS, 03 S10, 99 MX-5
Engine: 5.7, 2.2, 1.8
Transmission: 2004R, NV1500, Miata 5-spd
Axle/Gears: 3.73, 4.10, 4.30
Does the overall size of the caliper change? In other words, does it allow for any more clearance for the wheels or more or less?
04-29-2006, 08:42 PM
#91
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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
Originally Posted by palric
Any idea what the bias is with C5/C6 calipers and C4 HD 13 front with 1990 G92 factory rear disc brakes?
Percentage?
thx
RP
Percentage?
thx
RP
Ed
04-29-2006, 09:30 PM
#92
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Car: 1987 IROC-Z
Engine: 406 on N20 w/ EFI
Transmission: P.B. 700R4
Axle/Gears: 12 bolt w/ 3.91
hey Ed
Would you be able to build a set of front LS1, C4 or C5 brakes onto some 2" drop spindles? or are special spindles required for brake upgrades?
i have some photos of the 2" drop spindles too if you want to see them.. or if anybody wants to see them.. because i know there is a demand for them on this site
(i sent you a private message too, a few days ago...did u get it?)
Would you be able to build a set of front LS1, C4 or C5 brakes onto some 2" drop spindles? or are special spindles required for brake upgrades?
i have some photos of the 2" drop spindles too if you want to see them.. or if anybody wants to see them.. because i know there is a demand for them on this site
(i sent you a private message too, a few days ago...did u get it?)
04-30-2006, 09:31 AM
#93
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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
Kits on drop spindles are not a problem, I'll get back to you later today. I'm still in progress with catching up on PMs...I've got about 30 to reply to sometime today, thanks for the patience.
Ed
Ed
06-05-2006, 09:27 PM
#94
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Car: 89 Formula 350 WS6
Engine: 383 miniram
Transmission: 700R4
Originally Posted by ebmiller88
Cormyr,
Did you have to grind the lower cast vane off of the C5 caliper? I'm trying to fit my LS1/C5 combo setup and it won't fit due to that last fin on the back side, it contacts the lower part of the spindle where the bracket bolts on. Please advise..
Thanks!
Ed
Did you have to grind the lower cast vane off of the C5 caliper? I'm trying to fit my LS1/C5 combo setup and it won't fit due to that last fin on the back side, it contacts the lower part of the spindle where the bracket bolts on. Please advise..
Thanks!
Ed
06-06-2006, 04:37 AM
#95
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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 problem, I'm the master of tardiness lately. I fixed the issue by going to the C6 caliper which has no lower vanes and a thicker casting, a plus overall. I agree with you, don't take too much off the spindle. You need as much "meat" as you can get in that area as it allows.
Ed
Ed
06-08-2006, 08:18 PM
#97
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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 yet, it's coming:
Coming Soon
Please PM or e-mail me and I'll get back to you with specifics and please include your car's year and wheels you will be running.
Ed
Coming Soon
Please PM or e-mail me and I'll get back to you with specifics and please include your car's year and wheels you will be running.
Ed
06-08-2006, 09:07 PM
#98
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Car: a car being parted out
Engine: blown up
Transmission: in peices
Originally Posted by ebmiller88
Not yet, it's coming:
Coming Soon
Please PM or e-mail me and I'll get back to you with specifics and please include your car's year and wheels you will be running.
Ed
Coming Soon
Please PM or e-mail me and I'll get back to you with specifics and please include your car's year and wheels you will be running.
Ed
I will re Pm...
06-20-2006, 04:35 PM
#99
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Car: 89 IROC
Engine: 6.8 HSR N2O
Transmission: TKO 600
Axle/Gears: 9" Moser 3.50 True trac
Looking for an upgrade from stock
Lot's of good information here-thanks! I'm considering a front upgrade for my 89 iroc. Currently the car has stock fronts and 12" aluminum caliper rear (is this what you mean by 1LE?) With only 15" vacuum at idle the pedal effort is a little high but OK. But I don't feel like I get much if any from the rears! I am primarily looking at the LS1 fronts then I read a lot about the C5's etc and I wondered if they would really be better for a daily driver. Would upgrading to the LS1 improve the f/r bias? Also, is there a good source for the adaptor brackets and modified hubs?
06-23-2006, 11:28 PM
#100
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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
Originally Posted by V6sucker
I coulda swore I did Pm you... I did do not remember what all I included...
I will re Pm...
I will re Pm...
Ed
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