Bolt Pattern Mismatch ... - Team Camaro Tech
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post #1 of 9 (permalink) Old Aug 22nd, 17, 07:20 PM Thread Starter
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Larry
 
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Bolt Pattern Mismatch ...

One of my projects, 54 Ford F100 has been put in a mismatch situation on the wheel bolt patterns.

The front end was subframed with a 78 Pontiac Trans AM front clip and the rear axle was swapped to a Lincoln 12" disc brake axle.

The good part is I end up with a great handling truck with four wheel power disc brakes.

The bad part is I need to change either the front or the rear to get a match on the lug pattern all around the truck.

Looking for some input regarding which is the easiest or best to change. I could just purchase new axles for someplace like Currie, I'm guessing they can put any bolt pattern imaginable on new axles.

How about the front rotors? Is there anyplace selling custom bolt patterns on these GM rotors?

I would imagine there would be some serious liability concerns for any machine shop willing to re-drill rotors to a new bolt pattern?

I'd be willing to get any advice out there on this problem. Two patterns on one truck isn't going to cut it.

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post #2 of 9 (permalink) Old Aug 23rd, 17, 05:57 AM
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Re: Bolt Pattern Mismatch ...

I would consult with your machinist to see which disc rotor has the most meat on it to redrill one end or the other.

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post #3 of 9 (permalink) Old Aug 23rd, 17, 09:57 AM
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Re: Bolt Pattern Mismatch ...

Curious why you want to make them the same. Could probably be done most easily using adaptor wheel spacers.

Don
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post #4 of 9 (permalink) Old Aug 23rd, 17, 03:42 PM Thread Starter
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Re: Bolt Pattern Mismatch ...

Quote:
Originally Posted by Larger Dave View Post
I would consult with your machinist to see which disc rotor has the most meat on it to redrill one end or the other.

Big Dave
I'll have to check in with him and see what his pulse is on this type thing.

As I noted in the OP, I can imagine there are some liability aspects to a machinist doing this.

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post #5 of 9 (permalink) Old Aug 23rd, 17, 03:48 PM Thread Starter
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Re: Bolt Pattern Mismatch ...

Quote:
Originally Posted by dhutton View Post
Curious why you want to make them the same. Could probably be done most easily using adaptor wheel spacers.

Don
Well, I'd like to do this so I don't have two different bolt patterns on the truck. I'd like to be able to do things like rotate tires, have a single matching spare in the rotation etc.

I am not too keen on the adapter plates. Maybe on the rear of a vehicle, but I could not do it on the rear of this truck, just not enough fender clearance to push tire outward.

Putting adapters on the front is where I'm really not too keen on the idea.

Also my tracking width is only .5" off right now with the front a tad wider. I'd like to not push that measurement further off.

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post #6 of 9 (permalink) Old Aug 23rd, 17, 03:53 PM
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Re: Bolt Pattern Mismatch ...

The easiest would probably be to just get new rear axles. You can always just carry 2 spare tires!!!

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post #7 of 9 (permalink) Old Aug 23rd, 17, 03:53 PM Thread Starter
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Re: Bolt Pattern Mismatch ...

I suppose there are uni-lug wheels out there as well that could possibly work around this.

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post #8 of 9 (permalink) Old Aug 23rd, 17, 06:03 PM
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Re: Bolt Pattern Mismatch ...

You could just pull the axles and have the other bolt pattern drilled in between what is there. Or if you want new axles I think I have seen them where you can buy them double drilled.

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post #9 of 9 (permalink) Old Aug 23rd, 17, 06:33 PM Thread Starter
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Re: Bolt Pattern Mismatch ...

Quote:
Originally Posted by scblucam View Post
You could just pull the axles and have the other bolt pattern drilled in between what is there. Or if you want new axles I think I have seen them where you can buy them double drilled.
Doing the rear might boil down to (assuming a machine shop will drill it) the cost to redrill compared to the cost of new axles.


Then there are these, just stumbled onto this:

1973-77 GM Midsize 11 Inch Brake Rotor, 5 on 5 Inch

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