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Old 05-08-2013, 04:37 PM   #1
blackcloud45
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Donut Fitment for '66?

Does anyone know what later model (if any) donut type spare would fit a '66 w/ front disc brakes? I'm putting a fuel tank under the bed and don't really want the spare in the bed. Was thinking of fabbing up a bracket to put it behind the seat in the cab...
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Old 05-08-2013, 05:51 PM   #2
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Re: Donut Fitment for '66?

If it's five bolt, the 91-96 Caprice ones will work. Any full size RWD Cadillac, too. Lots of 80s full size GM cars also, many were dual 5x5 and 5x4.75 bolt pattern.
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Old 05-08-2013, 08:25 PM   #3
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Re: Donut Fitment for '66?

Crap... should have specified 6 lug
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Old 05-10-2013, 01:36 PM   #4
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Re: Donut Fitment for '66?

Nothing?
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Old 05-10-2013, 02:03 PM   #5
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Re: Donut Fitment for '66?

The factory in bed carriers actually dont take up much space, and it'd be easy to modify a floor well if you wanted it even lower
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Old 05-11-2013, 11:11 AM   #6
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Re: Donut Fitment for '66?

Thanks guys
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Old 05-11-2013, 10:38 PM   #7
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Re: Donut Fitment for '66?

colorados come with a donut spare that will fit right on, the centerbore is the right size and the bolt pattern is the same.



edit: the 6 lug spare in that link above is from a mazda b2000/b2200, it also has the big centerbore.
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Old 05-13-2013, 10:24 AM   #8
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Re: Donut Fitment for '66?

Awesome! Thanks
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Old 05-13-2013, 10:53 AM   #9
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Re: Donut Fitment for '66?

Make sure that you don't put a donut in the rear if you have posi. Put the donut on the front, and swap a good front to the rear. Different rear tire heights will burn out a posi quickly.
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Old 05-13-2013, 11:01 AM   #10
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Re: Donut Fitment for '66?

Cool, didn't think of that. I don't think mine is posi, so I should be good.
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Old 05-06-2016, 08:13 PM   #11
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Re: Donut Fitment for '66?

Thanks for this thread.
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Old 05-06-2016, 11:30 PM   #12
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Re: Donut Fitment for '66?

I believe even an open diff (non-posi) will suffer from greatly different rear tire sizes and having to differentiate for too far a drive. It's the main reason for the warning on the spare.
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