Consensus pick for '67 power disc brake conversion from manual drums
 

Will be taking delivery of my '67 convertible soon - and am formulating plans to 86 the manual drum brakes and dodgy bias ply Wide Oval repro tires (15 y.o.)

I'm not autocrossing, but do plan on some longer freeway jaunts once I've got it where I want it.

Have not settled on a wheel tire combo, would prefer to stay stock (car is a very good survivor with nice patina) perhaps with the later 11" discs.

Thoughts and recommendations welcome!

Back in the day I drove my 67 Tempest with a 69-72 disc brake set up. It should be more than adequate for your stated needs. Plenty of aftermarket kits available.

I will add to that,the rear disc brakes on my 97 Firebird required 2 minutes with a file on the caliper fins for a 15 inch snowflake to fit.

You should still be able to find disc brake up through 1972 "A" body or 1969-72 GP/Monte Carlo front spindles with steering knuckles then you can use all factory parts.

I used stock(not on 67) 14x7 Rally II's on my 67 with the 69-72 disc set up.

ditto on that with my 67 14x7 Rally II

This may be a bit over your performance aspirations, but I think this Wilwood kit is tough to beat if you’re keeping a small wheel.

I’m currently running Kore3 C5 Corvette discs all the way around, I’m happy with the performance, but I’m limited to running 17 inch wheels. If I could do it all over I would lean toward the Wilwood stuff.

I also prefer keeping a non-powered setup. Pedal feel is great, more space to work under the hood, and you don’t have to worry about a big cam killing your vacuum

https://www.wilwood.com/BrakeKits/Br...+Brake+Spindle

It's never been easier to do, new or used. The easiest and most economical way is a disc brake setup from a '69 to '72 A body. The whole thing literally slips in between the upper and lower ball joints. I don't know about '69 and up performance, but our '67 with the disc brakes and rear drums stops as well as any street car without ABS that I drive.

Good to know, those 14” drum wheels must be TIGHT. Also interesting, stock drum/drum master is 1”, correct? Do the factory discs use a 1” master as well?

I've driven my '65 and '67 GTO's 100's of thousands of miles in the past 40+ years with the 4 wheel drum brakes. They work fine for me (street driven cars). The key is to have them in good operating condition. That said, there is no downside to adding front discs other than wheel fitment. Both the drum and the disc will lock the wheels.