7.3l to c6

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Jul 27, 2005 | 06:17 PM

DMAC

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7.3l to c6

I would like to know if it is possibe to adapt a 1999 7.3l to a 1989 c6 ,it would prefer to keep the c6 as it has a external overdrive and has a 1356 transfercase
Thanks
Dave

Jul 27, 2005 | 10:37 PM

AlfredB1979

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From: Alvin, Texas.

I don't know about bolt pattern compatability, but a manual tranny computer should do the trick for you otherwise.

Jul 28, 2005 | 02:07 AM

Ponyracer

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From: Willamette Valley, Oregon

If the C-6 is from a Ford 6.9-7.3 diesel then it should bolt up the the 99 7.3 because the bolt pattern didnt change. The C-6 was available in the Ford trucks up until 97 or so.

Jul 28, 2005 | 08:39 AM

fellro86

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From: Marengo, Iowa

I haven't heard of C6's being available that late, but 87 I can believe. It doesn't mean they haven't, but usually they had the overdrives, and C6's aren't.

Jul 28, 2005 | 10:38 AM

Ponyracer

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From: Willamette Valley, Oregon

do a search in the forums. There was a big discussion for weeks about this. My Ford repair manuals on CD list the C-6 all the way up untill 97.

Jul 28, 2005 | 01:22 PM

fellro86

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From: Marengo, Iowa

That would be why I said I hadn't heard of it....I didn't find the big discussion, but found enough to see it is true. I take it there were some saying there wasn't such a thing? I'm mildly surprised, but in the heavier applications, i can see it happening. GM did the same with the TH400, it got used well into the 90's as well.

If I had been paying attention, he has an 89....

Last edited by fellro86; Jul 28, 2005 at 01:25 PM.

Jul 28, 2005 | 01:51 PM

Ponyracer

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From: Willamette Valley, Oregon

no problem, Fellro86! I dont know everything and have had to be informed at times that is what we're all here for.

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Jul 29, 2005 | 08:05 PM

Ponyracer

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From: Willamette Valley, Oregon

well unless there is an aftermarket PCM, I'm at a loss for that. The C-6 came behind the 7.3 up until about 97 or so. The Ford Manuals I have dont list the C-6 for 99. I would post you trans question and see if anyone might have an idea on your swap. There are ways to beef up the 4R100 to last and be stronger than Ford built them.