Transmission match
Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
They're different.
I'm assuming you have a C6.
One option you have is to find a small block C6 trans, or a C4, and swap it in with your 351W. They can be had pretty cheap on Craigslist, and are cheap and easy to rebuild if they need to be. Also they perform very well, and are very durable transmissions.
Another option, is to swap in an AOD overdrive tranny behind your 351W. That would cost a little bit more, but if you drive on the highway a lot, or have low rearend gears, it can be worth it.
or, swap in any number of Manual gearboxes,
OR! The most practical, easiest, most boring way, just Fix the 390...
I'm assuming you have a C6.
One option you have is to find a small block C6 trans, or a C4, and swap it in with your 351W. They can be had pretty cheap on Craigslist, and are cheap and easy to rebuild if they need to be. Also they perform very well, and are very durable transmissions.
Another option, is to swap in an AOD overdrive tranny behind your 351W. That would cost a little bit more, but if you drive on the highway a lot, or have low rearend gears, it can be worth it.
or, swap in any number of Manual gearboxes,
OR! The most practical, easiest, most boring way, just Fix the 390...
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 82
From: NorCal
Here is info for your cranial consumption if going AOD: Ford AOD Overdrive Transmission | Hemmings Motor News
Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
C-4 would almost be better. They are lighter weight, take less power to drive. They can be built to handle over 1,000hp so they are plenty strong.
I used to have one in my truck. And I still would, but I went AOD.
I used to have one in my truck. And I still would, but I went AOD.
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Fleet Owner
Joined: Dec 2009
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From: NorCal
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Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
It uses the c4/c6 mount, and it should work with your existing driveshaft. (My c4 was the same overall length) but the mount and crossmember need to be moved a little more than 2" back on the frame.
Thread Starter
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Freshman User
Joined: Jan 2015
Posts: 26
Likes: 0
Jowilker im still looking at pros and cons of the swap and fixing the head gasket but im probally gonna put the 351 in because its just sitting around and should make around 450hp as opposed to my 200 ish 390 plus it weighs less and is easier to get parts for
