transmission interchange
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New User
Joined: Jun 2009
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transmission interchange
hey guys brand new to the forum and figured id pick your brains about interchange for my 84 f250. its a 2wd w/ the inline 6cyl. its got the c6 and i was wondering what other years of transmissions will work with mine. i keep finding older good c6 trans. or close in years but for bigger engines and i didn't know if i could use those or not. thanks for any help guys.
Cargo Master
Joined: Aug 2007
Posts: 2,558
Likes: 69
From: New Zealand
Hi vetcopilot
I haven't worked on a 300 6cyl (my own F250 is a 351W) but I've read repeatedly that the small block (302, 351W, 351C) version C6 will bolt straight up to your engine.
The big block (351M, 429, 460) trans has a larger bellhousing & bolt pattern.
I haven't worked on a 300 6cyl (my own F250 is a 351W) but I've read repeatedly that the small block (302, 351W, 351C) version C6 will bolt straight up to your engine.
The big block (351M, 429, 460) trans has a larger bellhousing & bolt pattern.
Cargo Master
Joined: Aug 2007
Posts: 2,558
Likes: 69
From: New Zealand
Hi vetcopilot
I haven't worked on a 300 6cyl (my own F250 is a 351W) but I've read repeatedly that the small block (302, 351W, 351C) version C6 will bolt straight up to your engine.
The big block (351M, 429, 460) trans has a larger bellhousing & bolt pattern.
I haven't worked on a 300 6cyl (my own F250 is a 351W) but I've read repeatedly that the small block (302, 351W, 351C) version C6 will bolt straight up to your engine.
The big block (351M, 429, 460) trans has a larger bellhousing & bolt pattern.
Cargo Master
Joined: Aug 2007
Posts: 2,558
Likes: 69
From: New Zealand
I'm in New Zealand, so I'm not that familiar with your second-hand parts market, but I've used craigslist to buy items over there in the past - that would be a good place to check on prices anyhow.
Someone else on the site will probably help out more
Someone else on the site will probably help out more
Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
The only changes to look out for is the tail shaft housing, some of the 70's trucks changed the length of the tail shaft and housing. Otherwise, as noted, anything bolted to a 300,302, 351W will bolt up with no issues.
Moderator
Joined: Jan 2001
Posts: 56,966
Likes: 2,728
From: Virginia
When you look at a tranny, pull the dipstick and look at the color and smell the fluid. The fluid should be anything from bright pink to a dark maroon. Really dark and brown looking with a burnt smell would be sign to pass on that tranny and look for another.
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Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
Don't overlook car trannies either, but keep in mind you may have to change out the shift linkage, but that isn't too bad to do. The linkage on the car trannies have the orientation different than the trucks. Simply swap out the linkage for your truck linkage, and it will be fine.
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