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The largests and lightest brakes assembled for a 3rdgen on factory 16" rims.
Wilwood SL-6 piston calipers and 12.90x1.25" rotors
aluminum hubs
aluminum hats
aluminum heat coated billet brackets
shaved spindles
aluminum hubcentric spacers for running 4 "rear" factory rims- (makes tire rotation possible without dismounting tires from wheels)
Grade 8 fasteners- all safety wire tied & nylocked (double safety)
ARP 1/2" x 3" racing wheelstuds
weight also includes custom made Earls braided brake lines and Earls Solo-bleeders.
36.4 lbs fully assembled with 0.80" thick pads.
Also note that I have radial mount calipers and can shim them out very quickly and safely to accept the larger and heavy duty 13.06" GT rotors if ever needed. I opted for the ligher weight 12.90 SRP rotors for now. They do not offer a 13.06 SRP rotor- 13.06's will still fit with room to spare under my 16" IROC rims.
I also have the ability to run a 1 3/8 wide rotor instead of the 1 1/4 if I run thinner .50 or .65" wide pads instead of the .80" wides I have. Factory street pads on 3rd gens are .49" wide. The only reason I would ever need that heavy duty of an application is if I ran this car in short circletrack- never gonna happen.
Here's the Baer Extreme+ setup for use with 17" wheels:
14" 2pc rotors
6 piston calipers, loaded
Installed on modified spindles ready for install
54 lbs. per side
Steel rotor cut down to hub with studs VS Kore3 alum hub with 1LE outer bearing and studs (weight in pounds).
Factory spindle, rotor, caliper, pads and hose:
BlueCollarBrakeKit modified spindle, with bracket, caliper, GMC5* rotor, pads (hose and studs behind rotor on scale pad too)
*Note = this is a factory GM rotor so it is a bit heavier than some of the aftermarket "cheapie" replacements. More weight in rotor = more mass to help dissipate heat. If we had a light car, I'd go cheapie rotors, but since our car is heavy we went with GM rotors. They also have less propensity to crack.
Are you back in an F-body? I thought you were a Y-baby .
John has the definitive chart-to-date:
Originally Posted by 87350IROC
Here is a table of common brake swaps and how they effect brake pedal effort and travel. The two most important aspects of brake feel.
There are tons of threads on here for people looking for recommendations. Hopefully this will add a little science to the usual list of biased recommendations.
Perhaps we can make this a sticky and add to it for future reference.
The numbers assume the following for all kits listed
- same caliper flex
- same pad coefficient of friction
- same master cylinder bore diameter
- no losses in the hydraulic system
- no pressure lost moving sliding calipers
Right click - view image, for a larger image
Some other points to consider:
- Brake pedal travel and effort are feel items. Personally I like a short medium pressure pedal.
- The much vaunted 1LE setup actually produces much less brake torque than the stock 10.5" setup. Probably not a bad deal for the race cars where less assist is not such a bad trait.
- Big rotors are "free" brake efficiency, you can get the extra brake torque from a large rotor without the downside of a longer pedal
Finally, I would love to add data for more brake kits. Let me know if you have data for other kits or any of the missing data in the spreadsheet.
NICE job on that chart!!!! I like that a ton, great info!
Corvettes, nope, I've only owned a corvette once for a few days as I bought it as a wreck and sold it to a guy building a GTM. Never even saw the thing in person, LOL.
I *DO* however drive them for a few people for testing and coaching, product development, racing, etc. Did COTA recently in a GSpeed prepped C5z....way fun. We're taking it back for the NASA NATS at COTA next month too. wheee!!!
Nope, I'm still an FBody guy, have my 92 1LE/B4c (LB9/5sp) that has over 300k on it now, plus our WRL car (305tbi/5sp) that is likely getting a new chassis soon. Fun fun! Plus my tube frame with a 4th gen trans-am style camaro body.
I have FSL Narrow 6pot, alum hats, alum hubs, adj tubular a-arms, RoadRace 2" drop spindles, curved vane slotted rotors, and .5" ext BJ's, and swivel cup weight jacks thru the frame rail. I'm probably very close to the Banned DDR (sound like an iron curtain country!) above as far as weight assembly goes. Mark Williams 12 bolt w/TruTrac out back.
As an original owner, I need my comforts at my age (good seats! and A/C). 240k on mine.
Would really like to run COTA, but Road America is in my backyard and I am very biased. I'm awaiting to hear word from Andretti Autosport that Fernando Alonso will be running Road America next year!!
First off, totally agreed on Alonso. I hope he runs Indycar full time next year!
Nice car!! Whose drop spindles are those? Great weight jack setup and whose seats? Is that a mockup of the brake rotor because it looks like the vanes are running backwards on that one assuming it is the driver front and the pic is taken from the front.
COTA is a fun track, but it is no Road America. Being a Tilke it really has no soul like the epic tracks (RAm, RAtl, Watkins, Laguna, Barber, Sebring, etc). Still, if you're a track guy, you should run it once! :-D
Yes, mock-up pic. Good Eye.
Race Craft Road Race spindles - no longer offered. Along with .5" ext BJ, I might have the highest front RC around ( as soon as I say that, someone proves me wrong, ha). #850 fr with 36mm bar, RideTech HQ 6110 rear coilover (Great Shock) w/#250 & 19mm. Axle side PHBB to lower rear RC a little.
Corbeau TRS seats and ordered extra hide with seats to re-upholster the backs (console lid as well).
Just because I was watching this yesterday, I'll post this crash:
Weight of driver's side PBR vs Delco Moraine components for a 9-bolt.
I weighed: backing plates (GM in both cases), caliper with pads and brackets, rotor (EBC slot/dimple in the case of PBR worn factory in the case of DM) and brake line. The Delco-Moraine is 28.1 lbs and the PBR is 20.5 lbs. I didn't have the spring and bracket for the PBR parking lever or the DM parking lever. They're probably within a few ounces of each other. So swapping to PBR in a 9-bolt saves 14-15lbs total and it's supposed to work better.
07-02-2006, 12:53 AM
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