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Old Apr 14, 2003 | 02:32 PM
  #1  
tellico racing's Avatar
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Heavy Duty C6?

I have a C6 trans that I pulled out of a truck (not original engine and trans combo) It appears to be a C6 but it has ribs on the bellhousing. I was told it is a HD version of the C6 but I need to make sure. If it is a HD C6 how rare are they? are they worth more than a normal C6 2wd trans? What makes them "Heavy Duty"
Thanks
Tom
 
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Old Apr 14, 2003 | 02:49 PM
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Heavy Duty C6?

I thought all C6s' had those ribs. My '84 Bronco has the ribs and I'm almost positive it's the original tranny.
 
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Old Apr 14, 2003 | 05:29 PM
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Heavy Duty C6?

I think that the ones with the ribs are for a Big Block. Although my SB c6 has some ribs on it by the bellhousing.
 
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Old Apr 14, 2003 | 11:27 PM
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tellico racing's Avatar
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Heavy Duty C6?

I have two other C6 trannys and they have no ribs. Would a pic help?
 
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Old Apr 15, 2003 | 12:51 PM
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Heavy Duty C6?

Sure, let's see some pictures.

Mine has ribs, a small block bolt pattern, and a big 65 cast into the top of the bellhousing.

I've never heard of a heavy duty version of the C6. Well, other than the fact that a C6 IS a heavy duty transmission.
 
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Old Apr 15, 2003 | 01:34 PM
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Heavy Duty C6?

When I bought my truck, the PO gave me a spare 460/c6. He pointed out the ribs to me and told me it was a HD tranny. He claimed that they were more sought after than the non-ribbed ones.

That's just one guy's claim so take it for what it's worth.

Kevin K.
 
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Old Apr 15, 2003 | 08:40 PM
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Heavy Duty C6?

Originally posted by kjkozak2
When I bought my truck, the PO gave me a spare 460/c6. He pointed out the ribs to me and told me it was a HD tranny. He claimed that they were more sought after than the non-ribbed ones.



Kevin K.
Yea...thats what I heard too , But I am kinda skeptical. I will post a pic tomorrow.
 
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Old Apr 17, 2003 | 05:21 PM
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Heavy Duty C6?

O.K. Here is the pic...









 
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Old Apr 17, 2003 | 08:30 PM
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Heavy Duty C6?

The C6 to my 1970 429 has the exact same ribs. The only difference is that it has the slip yoke tailshaft which I think is longer than the pictured transmission. Did that tranny come out of a truck with a divorced transfer case or did they used to use the bolt on yoke? I can't recall ever seeing that type of yoke used on a 2WD truck transmission.
 
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Old Apr 17, 2003 | 08:57 PM
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Heavy Duty C6?

I pulled the 460 and tranny out of a 1970 1/2 ton 2wd truck. The engine is a 77 or something there about. I am pretty sure it was a truck engine, it did have the D6VE AA rods in it, (bonus day for me!!!)
I dont know anything about the history of the truck, The previous owner said it came from the factory with a 429, I just smiled and nodded my head .......because it was clear to me he didnt know either. I didnt argue with him, I just gave him the $250 and loaded it on the trailer.
My first impression is that the trans was from a car, but I am just guessing.
 
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Old Apr 17, 2003 | 10:09 PM
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Heavy Duty C6?

my truck has the original block and trans in it, and it has those ribs on the top also. i have a 2wd 250 and it was one of the heavier gross vehicle weights of the year.
 
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Old Apr 17, 2003 | 11:42 PM
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Heavy Duty C6?

cjcathey2002

Does this trans appear to be the same length as yours? does yours have a slip or attatched yoke?
 
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Old Apr 18, 2003 | 03:20 AM
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Heavy Duty C6?

Have you noticed yet that the fellas who have the same kind of trans in the pic also have big blocks?
 
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Old Apr 18, 2003 | 08:51 AM
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Heavy Duty C6?

Originally posted by GeneStoner
Have you noticed yet that the fellas who have the same kind of trans in the pic also have big blocks?

Yep... this is a big block, My others I have are big block too but without the ribs.
 
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Old Apr 18, 2003 | 09:28 AM
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Heavy Duty C6?

I have also had big block ones that did not have the ribs on them. But technically they were off of 400's and 351M's. Mine came out of a 1970 Lincoln with a 429.
 
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