I will be purchasing a disc brake kit soon. I have a '66 Mustang with an inline 6 (and I plan on keeping it that way), manual steering, manual brakes. It is currently an automatic (shouldn't make a difference if I'm not mistaken) but will be a T5 eventually.

I am debating between the single piston Granada setup or the 4 piston Shelby setup. They are both the same initial price of 525.oo , however, for the Shelby setup, one needs to acquire their own V-8 spindles (About 100 bucks on Ebay) I don't mind spending an extra hundred or so to get the Shelby setup.

I assume the 4 piston setup will be greatly superior. Is there any reason not to get the 4 piston Shelby setup?

If not, that's all I need right? The kit and a pair of V-8 spindles? The geometry will be correct?

I also have some aluminum wheels. 14x7's

Does anyone know if modern 14" wheels will fit, for sure?

Thanks folks.

 

Yes, they will. Basically, any 14" wheel that isn't a pre-70's drum-only wheel will fit with the OE KH-style brakes. I have 14" alloys on my 67 and they clear just fine with the KH style disc brakes.

That said, I'd probbaly recommend the CSRP Granada setup for you, just because it's cheaper and comes with spindles. Yes, in theory 4-piston brakes are better for performance (for multiple reasons I won't get into right now), but, in practice, you're not likely to ever notice, especially with an I6 car.

The downsides to OE-style KH brakes are that calipers are SUPER expensive, if you ever need to replace them, and you'd need to pick up OE spindles for the conversion, which is a potential PITA. It's easier and cheaper to just pick up the Granada kit.

 

I accept the high price of a replacement caliper. Those do not need to be replaced often . .

I also don't foresee the spindles being a problem. Actual Mustang V8 spindles are on Ebay, Craigslist often enough.

Is it really so bad to go overkill on brakes if it will only cost 100-150 bucks more initially?

 

Just my thought , but a single piston system will work just fine (floating). The idea of multi piston systems is to keep the pressure on the pad more even resulting in more even friction and more stable braking (also maybe a little more pressure, course that depends on the sum of the total surface area of the pistons). This is more important on a track car, but for street use may be overkill. On the downside, the more pistons that you have, the higher the risk of one screwing up. In your situation, with the very little cost differ, it would be very tempting to go with the 4 piston setup (its the 8 and 10's that I frown on)

 

All good points. The Granada set up is also more likely to create bumpsteer issues. Not a huge problem when you are just cruising around, but can be an issue if you push the car. I would go with the more stock Mustang set up (KH 4 piston).

 

I assume I would also have to get different tie rod ends to go along with the bigger spindles?

 

Yeh, and they may vary between power and non-power steering. The Granada spindles will require Granada ends.

 

If I have the stock 6cyl manual steering, do you know what I can use? Will a V8 style tie rod thread on to my setup?

 

Granada calipers can be bought at Carquest for 22$ (44$ a set) You can't beat that!!!!

Actually, Advanced Auto has them for 18$ each, but I like Carquest better

 

I'll most likely be going with the 4 piston setup.