Tranny Swap
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Senior User
Joined: Mar 2006
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Tranny Swap
I know this isn't really engine related, kind of, but not directly. Anyway, I thought you guys might have some insight??
Alright, this is what i got. 77 Ford Hi-Boy 4x4 with a 74 460, C-6 auto. These are the parts that I have laying around. Bellhousing, linkage, flywheel, manual trans, center driveshaft and crossmember from a 75 hi-boy with a 400. I also have the pedal assembly/column from a 76 hi-boy. Is this everything that I will need to swap out the auto and make the 77 a manual?? I also have a flywheel and starter from a 390 if I would need to use that instead?? Will the manual pedal assembly bolt right into the 77 with the auto??
Also, I read somewhere that when using a 400 bellhousing on a 460, the pilot bearing needs to go in the small hole deep inside the crank, or the bellhousing needs to be spaced back, otherwise there is clearance issues??
Please let me know of any other parts I will need. I'm trying to line everything up before I tear into the 77. I'd like to try and get this done in a day/weekend.
Alright, this is what i got. 77 Ford Hi-Boy 4x4 with a 74 460, C-6 auto. These are the parts that I have laying around. Bellhousing, linkage, flywheel, manual trans, center driveshaft and crossmember from a 75 hi-boy with a 400. I also have the pedal assembly/column from a 76 hi-boy. Is this everything that I will need to swap out the auto and make the 77 a manual?? I also have a flywheel and starter from a 390 if I would need to use that instead?? Will the manual pedal assembly bolt right into the 77 with the auto??
Also, I read somewhere that when using a 400 bellhousing on a 460, the pilot bearing needs to go in the small hole deep inside the crank, or the bellhousing needs to be spaced back, otherwise there is clearance issues??
Please let me know of any other parts I will need. I'm trying to line everything up before I tear into the 77. I'd like to try and get this done in a day/weekend.
Elder User
Joined: Nov 2003
Posts: 778
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From: southeast Idaho
Off the top of my head you may need the steering column support also and the tunnel over the trans from the donor, I had to cut the hole in the floor and then use the raised tunnel from the donor, its no biggy though, you can see where to cut when you get that far.
The column support for the standard pedals use large bushings so its narrower inside I think than the auto trans support, there's several ways to do it but the easiest for me was to swap it.. If the support is part of your setup then no problem, it will bolt right in but check how the brake pedal hooks up to the rod going to the master cylinder, mine was different but mine was 74 to 79
The column support for the standard pedals use large bushings so its narrower inside I think than the auto trans support, there's several ways to do it but the easiest for me was to swap it.. If the support is part of your setup then no problem, it will bolt right in but check how the brake pedal hooks up to the rod going to the master cylinder, mine was different but mine was 74 to 79
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Senior User
Joined: Mar 2006
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The 76 Hi Boy is complete so the column support and the cover with a hole for a manual should all be there. I can double check the rod for the brakes, but with the stuff I have laying around, I should be able to make something work.
From what I've been reading, since I'm using a bellhousing from an older 400, my best bet would be to use the 390 flywheel and clutch setup for that flywheel. I also read that I do indeed need to use the inside hole of the crank for the pilot bushing. Once this far along, does a guy just use a 460 starter?? How does everyone mount their clutch linkage on the 460 block or will the bracketry from the 400 work??
Any other tips/information that would be helpful??
From what I've been reading, since I'm using a bellhousing from an older 400, my best bet would be to use the 390 flywheel and clutch setup for that flywheel. I also read that I do indeed need to use the inside hole of the crank for the pilot bushing. Once this far along, does a guy just use a 460 starter?? How does everyone mount their clutch linkage on the 460 block or will the bracketry from the 400 work??
Any other tips/information that would be helpful??
Lead Driver
Joined: Mar 2004
Posts: 8,922
Likes: 153
The Z bar and it's bell housing bracket will bolt onto the 460, as they do share the same bell housing bolt pattern. Count the teeth on the 390 starter drive, there are 2 different tooth counts. Make sure the starter you are using has the same number.
