Unidentified 66 HiPo C4 Transmission part - Ford Muscle Forums : Ford Muscle Cars Tech Forum
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post #1 of 6 (permalink) Old 06-27-2018, 09:31 AM Thread Starter
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Unidentified 66 HiPo C4 Transmission part

Hey all,

So I started assembly last night on my 66 HiPo C4 transmission and when I was getting all the parts organized out of the tub I put everything in, there was this one little tiny rod that I have no idea where it came from sitting in the bottom of my tub. I looked through the service manuals and I don't see it pictured anywhere (unless I missed it). Does anyone recognize this piece and know where it goes, see attached photo.

Thanks in advance,

Jason
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post #2 of 6 (permalink) Old 06-27-2018, 02:31 PM
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Re: Unidentified 66 HiPo C4 Transmission part

That goes in the pump (I'd have to check a TransGo instruction sheet to see which passage) and it used to prevent converter "ballooning" . You could check an online instruction sheet to see which passage I'm talking about. If that was in their I'll bet someone added a shift kit to the valve body at some time. The sad part is all the springs were IDENTICAL and the separator plate was already drilled to size. All of the Trans Go parts for the 'Green dot" valve bodies are sourced from the K code Ford valve body except that converter 'bullet" you are asking about.
Randy

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post #3 of 6 (permalink) Old 06-27-2018, 03:27 PM Thread Starter
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Re: Unidentified 66 HiPo C4 Transmission part

Quote:
Originally Posted by GT350HR View Post
That goes in the pump (I'd have to check a TransGo instruction sheet to see which passage) and it used to prevent converter "ballooning" . You could check an online instruction sheet to see which passage I'm talking about. If that was in their I'll bet someone added a shift kit to the valve body at some time. The sad part is all the springs were IDENTICAL and the separator plate was already drilled to size. All of the Trans Go parts for the 'Green dot" valve bodies are sourced from the K code Ford valve body except that converter 'bullet" you are asking about.
Randy

Well you're the only one who's identified it, I've been on several forum and nobody seems to know about it including some C4 rebuilders. I've searched around and can't seem to find any information on it. Question, is it just plugging up a hole or is there a spring or something else I'm missing. I just found it sitting in the bottom of my tub where all the disassembled part were in, including the pump which at that point hadn't even been taken apart yet. So any help you could give me would be HUGE...

One thing though, I did do some searching around and the only thing I'm finding as far as a pump modification for better converter flow is the one where you drill out the aluminum plug and remove the two balls and spring and then hex plug it, but my pump has the original spring and balls still in place, so that wasn't done.

Anyway, let me know.

Thanks again Randy,

Jason

Last edited by Morsel; 06-27-2018 at 03:35 PM.
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post #4 of 6 (permalink) Old 06-27-2018, 05:00 PM Thread Starter
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Re: Unidentified 66 HiPo C4 Transmission part

Well good work Randy, you nailed it. I already got a response from TransGo (lightning fast reply by the way) and you called it... "converter ballooning". Here's a shot of the installation hole if anyone runs into this in the future...

Thanks again Randy,

Jason
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post #5 of 6 (permalink) Old 06-28-2018, 09:13 AM
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Re: Unidentified 66 HiPo C4 Transmission part

That's it. I checked my old instruction sheets and they are the same. Your choice to put it in or not you will not notice ANY difference if it is in there or not. Your converter will not balloon or blow up without it. I don't use them in my own race transmissions. Score one for the "old guy"!
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Last edited by GT350HR; 06-28-2018 at 09:15 AM.
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post #6 of 6 (permalink) Old 06-29-2018, 02:48 AM
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Re: Unidentified 66 HiPo C4 Transmission part

That's the one As said nothing will happen without it . Is only the one early transgo kit i've ever seen use it
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