Question on C6 and Low Hump vs. High Hump

Clutch, transmission, rear axle

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colnago
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Question on C6 and Low Hump vs. High Hump

Post by colnago »

Not sure where to post this, so I'm starting here ...

I'd like to get new carpet for my '67. It originally came with a Cruise-O-Matic transmission, but it grew into a C6 over the years. All of the catalogs specify one carpet for non-C6 trucks (low hump), and a different carpet for C6 trucks (high hump). As far as I can tell, the truck still has the original low hump. I actually have a high hump from a parts truck. Should I put the high hump in before I get the carpet set, to give the C6 more room? If it needs the high hump, why have I gotten by with the low hump (so far)?

By the way, a '67 F250 2WD Camper Special with a 352, if it makes a difference.

Thanks,

Joseph
"Sugar", my 1967 Ford F250 2WD Camper Special, 352FE, Ford iron "T" Intake with 1405 Edelbrock, Duraspark II Ignition, C6 transmission, front disc brake conversion.
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Re: Question on C6 and Low Hump vs. High Hump

Post by FORDification »

A C6 will fit without installing the removeable hump, but man it's tight. When I first installed the 390/C6 with the low hump in my truck, the C6 was actually touching the floorpan. I'm going to be installing the high-hump sometime in the very near future myself for a little additional clearance.

I think you should put it in yours as well, just to make future servicing go much easier.
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Re: Question on C6 and Low Hump vs. High Hump

Post by 68 RATROD »

Are replacement high humps available anywhere? What is the height of the low and high? My truck is a 68 F100 it had a 360 with a 4 speed and Im putting in a 460 with a C6.
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Re: Question on C6 and Low Hump vs. High Hump

Post by flyboy2610 »

68 RATROD wrote:Are replacement high humps available anywhere? What is the height of the low and high? My truck is a 68 F100 it had a 360 with a 4 speed and Im putting in a 460 with a C6.
If your truck originally came with the 4-speed, you already have the high hump. You will need to fabricate a piece to cover the shifter opening, unless you are planning on a floor shifter for the C6.
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Re: Question on C6 and Low Hump vs. High Hump

Post by 68 RATROD »

Thanks for the info flyboy.
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Re: Question on C6 and Low Hump vs. High Hump

Post by 67 Camper Special »

My truck is a bunch of different trucks put together so I am not sure what it originally came with as far as a tranny. It has a C6 now. Because it has a narrow brake pedal and a column change I wonder if it used to be a stick.

How do you tell what hump you have? Height?

Larry
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Re: Question on C6 and Low Hump vs. High Hump

Post by FloridaPhil »

My 68 F100 short bed was a 2WD 360 column shifted three speed manual from the factory. It had the low hump. I installed a C6 so I cut out the floor and installed the high hump cover. I bought my high hump cover on EBay and it was pretty cheap. I think the 2WD floor pan is the same and the hole and the cover are what makes it a high hump. The high hump gives you a lot more room between the tranny and the floor. I can see how they might hit on a very rough road. Also, tightening up the tranny bolts is a lot easier with the high hump.
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Re: Question on C6 and Low Hump vs. High Hump

Post by basketcase0302 »

67 Camper Special on Sun Nov 04, 2012 6:24 am
My truck is a bunch of different trucks put together so I am not sure what it originally came with as far as a tranny. It has a C6 now. Because it has a narrow brake pedal and a column change I wonder if it used to be a stick.
How do you tell what hump you have? Height?
Larry
Larry, you probably ID'd the truck as being a former standard shift by what you said above. Maybe the pedal tutorial will also help you ID it:
http://www.fordification.com/tech/clutc ... ackets.htm
I also remember there being a comparison photo of the covers here somewhere-but couldn't find it. :hw:
Here's what my high hump cover looks like, maybe it will help:
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Re: Question on C6 and Low Hump vs. High Hump

Post by 67 Camper Special »

Thanks Jeff

By looking at your picture I now know I have the low hump.

Larry
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Re: Question on C6 and Low Hump vs. High Hump

Post by basketcase0302 »

67 Camper Special on Mon Nov 05, 2012 6:28 am
Thanks Jeff
By looking at your picture I now know I have the low hump.
Larry
Your quite welcome. And the good news is there does still seem to be a good supply of these if you look hard enough. Maybe post a "wanted" ad here:
http://www.fordification.com/forum/viewforum.php?f=13
Jeff
http://www.fordification.com/forum/view ... 22&t=46251
SOLD-71 F-350 dually flatbed, 302 / .030 over V-8 with a "baby"C-6, B & M truckshifter, Dana70/4.11 ratio, intermittent wipers, tilt steering, full LED lighting on the flat bed, and no stereo yet (this way I can hear the rattles to diagnose)! SOLD!
Many Ford bumps / one 76' EB / and several dents through the years.
A lot of "oddball" Ford parts collected from working on them for 34 years now!
2008 Ford Escape 4 x 4
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