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how do I tell if my 67 coronet 500 front disc brakes are factory? im just curious...
they are single piston and look like they have been on car for a really long time....
I didn't know it had them when I bought the car, so it was a nice find.

I have 14" magnum 500's on there with no clearance issues either...

thanks.

That year would have 4-piston calipers on it.

Probably swapped on there and nothing wrong with that, it is a nice upgrade.

Just make sure you have a bias valve installed and properly set. My daughter almost put her 67 Coronet in the wall on the last run last year because the rear tires locked up. I have the same setup as yours in her car, but never set the valve correctly, even though it was installed. She was going around 96 mph when she hit the brakes - fortunately she was able to save the car from hitting the wall.

I bet your daughter's face wash white as a ghost!

Sounds like your daughter really knows how to drive Mark.

where would this valve be? how to know its set correctly?

The easiest way to determine if your 1967 Coronet came from the factory with front disc brakes, is to look at your cars fender tag.

The 1967 Coronets have 7 lines of code information stamped on their fender tags. Line number 1 is located at the very bottom of the fender tag closest to the fender and line number 7 is located at the very top of the fender tag closest to the engine.

The two lines of fender tag code information where the front disc brake option would be located on your car, would be lines number 4 and 5. Line number 4 uses numbers and line number 5 uses all capital letters.

The full 3 digit factory code used for the front disc brake, rear drum brake option in 1967, as well as for 1966 and 1968 models, was code number 479. Since space was limited on the fender tags, Chrysler only used the last digit on most of the multiple digit option codes on lines 4, 5, 6 and 7, so for the disc brake option the last digit is 9. For line 5, the capital letter used for most brake options was "D", so the fender tag code for front disc brakes on your car should be D9.

Below is some very helpful fender tag decoding information as found in my copy of the "Seventh Edition" of the "1966-1968 Chrysler Corporation Production Option Code Book" (aka "White Book") written by Mr. Galen Govier. This information will show you how fender tag codes are formatted on the 1967 models.

Regarding these "White Books", there are eight different issues of them, six of which I personally own. They are broken down as follows.

(01) 1962 through 1965 Production Option Code Book
(02) 1966 through 1968 Production Option Code Book
(03) 1969 through 1971 Production Option Code Book
(04) 1972 through 1974 Production Option Code Book
(05) 1975 through 1980 Production Option Code Book
(06) 1961 through 1980 Dodge Light Truck Code Book
(07) Part and Casting Numbers volume 1
(08) Part and Casting Numbers volume 2

It looks as if the latest versions of these "White Books" are still available through Mr. Goviers web site GTS Services @ http://www.galengovier.com/services.htm and probably other locations as well.

.

As Andy mentioned, the 1967 factory front disc brakes would have been a four piston caliper set up, but if your car did come from the factory with the front disc brake option, it is possible that at some time in the cars past, a previous owner could have swapped over to a single piston caliper set up that was used on newer model year cars, which would have made purchasing replacement parts easier to do and much less expensive than for the original 4 piston set up.

Richard

3623ok...nice post.
just for record here is my fender tag...
whats you think? I could use a "correct" decode of it also lol...

anyone on the decoding my tag?

sorry, I moved my question over to the car history section.