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Author Topic: Speedo reducer  (Read 373 times)
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427heaven
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« on: August 08, 2017, 05:01:15 PM »

Speedo Reducer-I have a c8zf 17294b...667ad.750n5 in most excellent condition! It has been in my stash for almost 40 years. What does it fit? What is an approximate value? What gear ratio is the need for this item? Thanks for you input. PeelOut

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Coralsnake
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« Reply #1 on: August 08, 2017, 05:19:13 PM »

Not used on 1968 Shelbys

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427heaven
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« Reply #2 on: August 08, 2017, 05:53:28 PM »

OK... Any idea what its application is. Undecided

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Bob Gaines
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« Reply #3 on: August 08, 2017, 07:21:11 PM »

OK... Any idea what its application is. Undecided
69 Mustang/Shelby/Boss with 3.91 or lower factory gears for part of the Year. I am not sure about 70 Mustang/Boss. Maybe someone else will come along and fill in the blanks.

« Last Edit: August 08, 2017, 07:23:07 PM by Bob Gaines » Logged

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ed meyer
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« Reply #4 on: August 08, 2017, 07:54:28 PM »

al[ 70 -71   v-w-y code cars use gear reducers

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427heaven
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« Reply #5 on: August 08, 2017, 08:47:37 PM »

Thanks Bob-Ed much appreciated! So anything with 3.73-3.89-4.11 from 69 to 71 performance cars used this?

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J_Speegle
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« Reply #6 on: August 08, 2017, 08:51:13 PM »

Thanks Bob-Ed much appreciated! So anything with 3.73-3.89-4.11 from 69 to 71 performance cars used this?

No there is a period of time in 69 that didn't use them

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Jeff Speegle
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427heaven
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« Reply #7 on: August 08, 2017, 08:58:06 PM »

Thanks Jeff- Been a long time, hope all is well with you and yours. Wait till you see the car now. Grin

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Bob Gaines
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« Reply #8 on: August 08, 2017, 09:17:58 PM »

69 Mustang/Shelby/Boss with 3.91 or lower factory gears for part of the Year. I am not sure about 70 Mustang/Boss. Maybe someone else will come along and fill in the blanks.
Thanks Bob-Ed much appreciated! So anything with 3.73-3.89-4.11 from 69 to 71 performance cars used this?
3.91,4.11 and 4.30  gears

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« Reply #9 on: August 09, 2017, 03:26:33 AM »

Here some info on the CJ site.

https://www.428cobrajet.org/id-speedometer-adapter



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