Best front disc. set up for street/strip car...

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I had Wilwood drag race Brakes all the way around on my Demon. The 3/8” solid rotor with 4 piston Calipers. The brakes would fade after about 3 or 4 consecutive hard stops from 60MPH. I then went to the cast iron vented front rotors and did not get any more braking ability. All it did was give better pad wear and quieter operation if anything.

In my opinion the biggest thing you have to worry about is capacity (3/8” solid rotor), obviously, and the fact that they are not weather sealed. They should not be used in the rain or hosed down when washing your car. I almost never washed my car with water and if I did I wrapped the wheels/tires to keep them dry. If I wanted to wash the wheels/tires I always took them off the car.



I also think the Wilwood stuff was junk and I would never buy it again unless I was on a severely tight budget. My rotors wobbled (steering wheel would shake when braking) and they sent me new rotors and the new ones were no better. I had to keep clocking the rotors and the adapter rings and measuring runout and it took FOREVER. I finally got it where it was acceptable but I will never go through that again. There is something like 25 possibilities to try to get the runout low enough, but it never got anywhere close to production tolerances. I think I started at .012 and got it as low as .006 runout. ....... .012 would shake the steering wheel pretty good and the car was no fun to drive.



I have Mark Williams on the Valiant and there Brakes are better in every way. They cost $$ But well worth it if you can save up for them. Yes, I had to ship them my Spindles but that was worth it too as I believe they magnafluxed them as well as minor machining.



Anyhow, wilwood or mark williams are perfectly fine for limited street driving. I have NEVER had them fade on the street or race track but I am aware of their limited capacity. After 4 or 5 stops they WILL give up. I have never had a situation on the street where I was FORCED to stop hard 4 or 5 times in a row.

Ron Silva.

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I developed the Wilwood + 11.75 kit years ago just for street/strip cars. That way you can have the low cost and reliability of the factory rotor, but you save a bunch of weight by going with the aluminum caliper.

I'm not a big fan of using race kits on the street. The lightweight aluminum hubs aren't really designed to handle potholes and such. Of course, some folks do it and don't have problems so you just have to make a decision based on how much you drive the car and the conditions that you drive it in.

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I developed the Wilwood + 11.75 kit years ago just for street/strip cars. That way you can have the low cost and reliability of the factory rotor, but you save a bunch of weight by going with the aluminum caliper.

I'm not a big fan of using race kits on the street. The lightweight aluminum hubs aren't really designed to handle potholes and such. Of course, some folks do it and don't have problems so you just have to make a decision based on how much you drive the car and the conditions that you drive it in.

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you have a kit to fit wilwood calipers on a stock rotor? or a big rotor? who sells your kit?

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Yes, I've had a kit that hangs a Wilwood caliper on a stock rotor for years. Mancini Racing sells it as do lots of other places.

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I developed the Wilwood + 11.75 kit years ago just for street/strip cars. That way you can have the low cost and reliability of the factory rotor, but you save a bunch of weight by going with the aluminum caliper.

I'm not a big fan of using race kits on the street. The lightweight aluminum hubs aren't really designed to handle potholes and such. Of course, some folks do it and don't have problems so you just have to make a decision based on how much you drive the car and the conditions that you drive it in.

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you have a kit to fit wilwood calipers on a stock rotor? or a big rotor? who sells your kit?

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Yes, I've had a kit that hangs a Wilwood caliper on a stock rotor for years. Mancini Racing sells it as do lots of other places.

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Al, you must be one of the original buyers of that kit. I started to make the Wilwood adapter back in 1999 so it has been just a little over 10 years.

I recently designed a kit that uses the radial mount Wilwood calipers. These calipers have weather seals on the pistons. The radial mounting is also more rigid than the ear mounts. But the radial mount calipers are a lot more expensive than the older ear mounts so this new kit hasn't been that popular.

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Where does one get the rotors for this? I have a WW kit with a solid rotor that I may steal the Dynalite calipers from and put them on the GTX. It has factory KH discs but I wouldn't mind saving a few pounds.

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The factory 11.75 inch rotors were used on 76-78 B-body and 79-up R bodies. Raybestos part # 7038R, NAPA part#NB 4885579. I believe Wagner and Bendix also have them but not sure on those part numbers.

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Thank you for the info, much appreciated