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Author Topic: 1966 Hipo c4 flex plate  (Read 514 times)
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karguy
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« on: November 13, 2017, 10:22:17 PM »

WTB-  Early 1966 hipo C4 K code flex plate. I believe the part number is C40E-6375-C, 30.4 ounce.  Any help or advice would be greatly appreciated.
Thanks in advance, Karl

« Last Edit: November 13, 2017, 10:29:16 PM by karguy » Logged
6S1640
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« Reply #1 on: November 13, 2017, 10:51:01 PM »

Hi Karl,

The HiPo flexplate can be made from a LoPo version by adding welding material like Ford did.  Ford then part marked as you have indicated.  However, you can have a LoPo flex plate balanced with your engine assembly and would be just fine.  Your engine builder can make it work.  But if you really want a HiPo flexplate, one could be replicated, even with part number, but you would still have balanced with the rest of the moving parts.

Cory



* HiPo289FlexPlateC4OE-C.jpg (8.09 KB, 800x607 - viewed 57 times.)
« Last Edit: November 13, 2017, 11:33:08 PM by 6S1640 » Logged
karguy
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« Reply #2 on: November 14, 2017, 02:41:02 PM »

Cory, thanks for all the great information. I will probably go with the standard flexplate and have it balanced, itís just very easy to get caught up in tracking down all the original stuff. Do you think there are even any original hiPo flex plates out there to be had?

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Bob Gaines
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« Reply #3 on: November 14, 2017, 02:56:55 PM »

Cory, thanks for all the great information. I will probably go with the standard flexplate and have it balanced, itís just very easy to get caught up in tracking down all the original stuff. Do you think there are even any original hiPo flex plates out there to be had?
I havn't seen a original one in years. I am sure there are some out there. Searching for a original one or re balance a lopo one ,I have to say I think that you have respect for your time and energy by doing the re balancing. No one will see the difference once installed and unless you are going with vintage Ford trademark bearings ,oilpump etc. that compromise will not make any difference relatively speaking. Just my opinion others may have different. 

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karguy
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« Reply #4 on: November 14, 2017, 04:18:07 PM »

Thanks gentlemen, I will plan on rebalancing a standard 289 flexplate unless an original hiPo unit shows up between now and the time that part of the restoration begins. If anyone has an original and is willing to sell, I am still very interested. Thank you, Karl

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6S1640
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« Reply #5 on: November 14, 2017, 08:03:10 PM »

Hi Karl,

I am sure there are HiPo flexplates out there.  The  problem is they look very much like a LoPo and spotting one requires you to pickup and examine for the right part number.  They are not like the HiPo balancer where you could spot them from across the isle at a swap meet, and if your a keen enough can even identify the C5 from a C8 balancer from a distance.   Bob is right, what is your time worth?   How many flexplates are you willing to go through at a swap meet or wrecking yard?

You might check with Conley or Geisler.  Also check with Andrew at MagMustangs and Lee at Fastbackstacks, all EPay sellers.

Good luck

Cory

« Last Edit: November 14, 2017, 08:09:12 PM by 6S1640 » Logged
gt350hr
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« Reply #6 on: November 15, 2017, 09:00:25 AM »

  I'll look through the stack I have.

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owner 6S477 HERTZ White w/Blue stripes-1of18-since 1974. OVER 3,500 drag strip runs made in it since then. My candidate for the "worlds Most drag raced Shelby" More added all the time.
NC TRACKRAT
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« Reply #7 on: November 15, 2017, 06:55:11 PM »

Question:  HiPo flywheels have 160 teeth.  Are HiPo flexplates also 160 teeth? Standard are 157, right?

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« Reply #8 on: November 16, 2017, 08:32:16 AM »

   I honestly never counted the teeth. They are the same "OD" so I never bothered. There never was a 164 tooth HiPo (289) fly wheel or flex plate.

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owner 6S477 HERTZ White w/Blue stripes-1of18-since 1974. OVER 3,500 drag strip runs made in it since then. My candidate for the "worlds Most drag raced Shelby" More added all the time.
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