Contact CHOCK. I have no idea what he has available. I don't know if they make 4 lug rotors. If they don't you will be finding a machine shop to convert them to 4 lug for you.

 

i’ve sent an email, i haven’t been able to find any rotors in the same size that are 4 lug. thanks for the reply

 

You can drill those rotors on a sturdy 1/2" drill press.
Little bit of work holding, no problem.

 

You obviously did not tell Chock that you have 4 lug wheels or he would not have sold you the 5 lug disc brake kit. Chock's kits all you use factory Ford parts and since Ford did not offer disc brakes on the 6 cylinder Gen 1 Mustangs there are no factory 4 lug rotors available.

 

Yea, your cheapest path forward is to take the new rotors to a machine shop and have them drilled for the 4 bolt pattern. Don’t know where you’re located, so can’t recommend anyone. Good luck.

 

It's not at all the "big brake" problem I was expecting to read about! I gotta be honest, I did chuckle a little bit, but it was in a solidarity kind of way, as we all have made some kind of mistake like this over the years. Fortunately, these types of problems can be resolved with the correct application of more cash. Please let us all know what you end up doing.

 

Another possble issue for the OP is if he has 4 lug axle, then he has a 7.5 6 cylinder rear axle. With a V8 conversion, that rearend is on borrowed time.

 

That's a bummer but it happens. I understand the limited funding, and I can tell you EXACTLY what I'd do in your situation. I'd buy a pair of those wheels in 5 lug and put them on the front and run it.

It will drive you a little crazy until you eventually do something about the rear, but almost nobody will notice.

NOTE: I think your current wheels are 14", if i can squint and see the text on your tire. You may need 15" to clear those calipers. You could test this by pressing the studs out of your hub and mocking it up with the wheel.

Even if I had to run 15" on the front and 14" on the back, that's what i would do rather than try to redrill hubs/rotors or make some adapter work (which would throw your backspacing way off)

 

This is my most likely route as i’m concerned for the integrity of the rotors if I get them drilled and there’s many more options for replacements of 5 lug rotors if I need more down the road. This was just a simple mistake of not cross checking the parts, easy to do but as this is my first car I’m building/restoring, it slipped my mind to even check. rookie mistake.

 

I'm not sure about a 68 mustang but on a 65-66, when converting to a v8, most of the steering and suspension require replacement with the v8 parts. To such an extent that I wouldn't just drill the rotors. Maybe this not an issue for 68's. kip

 

Chock has your answers.

 

I've wrote him the option if he wants to continue with the 4 bolt system. We ask many questions on the sells, this one fell through the cracks I guess.

 

Since you have already done a V8 swap, the proper thing to do is convert your I6 Mustang to a V8 Mustang. This is an involved build, but it is necessary for safety as well as performance. Modifying your current brake kit to work with 4-lug wheels is not really a good plan.

 

There are several disc kits available with 4 lug rotors. But I don't see any replacement rotors for those kits. What happens if you need a new 4 lug rotor?

Of course, there's always Wildwood; Wilwood Disc Brakes - Search Part No: 140-12535

 

I fail to see how the spindles could be upgraded and yet remain four lug, not looking to pick on you Alex, just confused and slightly concerned. kip

 

It's a 68, upgrade from what? In 68 there was only one spindle. There was also no difference in the suspension from what I remember. I once helped a kid redo his front suspension on a 68 I6 and when we went to get parts there was no difference between V8 or I6 parts. I know the steering was the same because the tire rods were the same.....because the spindles are the same.

Ford finally discovered it was cheaper to use the same suspension and steering, the 4 lug, brakes, and the rear end were the differences between the 6 and 8 from what I remember. So as far as safety goes in 68 if you swap in the V8 you could get away with a brake upgrade and pray your rear dos not grenade.

 

I think the natural assumption would be that anyone going through the trouble of upgrading the brakes would also upgrade from 4-lug to 5-lug wheels.

Sell the wheels and tires you have and purchase the appropriate wheels and tires. Your five lug wheel options are 100X more.

 

You need one of these; Axle Housing - 8 Inch - COMPLETE - Used ~ 1967 - 1968 Mercury Cougar / 1967 - 1968 Ford Mustang

 

I just dragged one of those out of the leaves on the side of my garage earlier this year, it's been buried since I moved in here 12 years ago. I didn't realize they were selling for that much. I don't remember what I did with it. I know I didn't throw it away. I think I have two 67-70 8 inch housings in storage and I have never even owned anything but 66 cars. I only got the 1st one so I could run late model wheels on the coupe I had for a short while with no spacers.