Tranny swamp
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Freshman User
Joined: Nov 2004
Posts: 35
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From: huntsville ontario
Tranny swamp
I have a 78 F150 4x4 that has a C-6 auto in it. I have puchased a 4 speed from a 78 bronco. My question is will the 4 speed from the bronco go right in the pickup? I know the bronco auto trans has a longer tail stock and center case between the trans and transfer case I was just wandering if the 4 gear is the same. Also has any one out there ever put in a 5speed out of a 87 and up 4x4 in the 78, if they did , do you have to use the newer transfer case and change drive shafts, or can you use the older transfer case 
Laughing Gas
Joined: Jan 2003
Posts: 1,019
Likes: 2
From: Georgetown, Ky
Okay First questions first. It should bolt up after you change the:
Flywheel
BellHousing
Pedals in the cab
add the clutch linkage, it is bolt on as are the pedals
and a NEW clutch.
You will have to change the driveshaft most likley as the C6 has splines on the output shaft and the 4spd (Im assuming a NP435) has a saddle cap for the Ujoint to sit.
As for adding the 5spd, it gets a little more complicated. You will need the 5spd of course, a Hydrolic Clutch, the shifter comes up in a different spot, the driveshaft will be different. And the Tranny needs to come out of a truck that has the same motor as what its going into. If you have a 351w then the tranny needs to comefrom a late model 351w (5.8L)
Flywheel
BellHousing
Pedals in the cab
add the clutch linkage, it is bolt on as are the pedals
and a NEW clutch.
You will have to change the driveshaft most likley as the C6 has splines on the output shaft and the 4spd (Im assuming a NP435) has a saddle cap for the Ujoint to sit.
As for adding the 5spd, it gets a little more complicated. You will need the 5spd of course, a Hydrolic Clutch, the shifter comes up in a different spot, the driveshaft will be different. And the Tranny needs to come out of a truck that has the same motor as what its going into. If you have a 351w then the tranny needs to comefrom a late model 351w (5.8L)
Thread Starter
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Freshman User
Joined: Nov 2004
Posts: 35
Likes: 0
From: huntsville ontario
Thank-you very much for the information, Does that mean the 4 speed tranny and the transfer case from the bronco are not a longer unit bolted together than the pick-up unit? I know in the case of a automatic the bronco as a assembly is a longer unit. Thanks again for the information.
