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Old May 20, 2015 | 04:13 PM
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Trans swap

I am trying to locate information regarding transmission interchangability.

I want to swap a granny low 4 speed from an 87 Bronco with a 3.0 into an 89 with a 5 sp overdrive and the 3.0.

Basically two good running trucks. We want to swap gearboxes, and both drive away.

Is there a way, before tearing them apart, to confirm that the two transmissions are interchangable, without modifying the floor or anything weird like that?

I figure that we can swap drive shafts, cross members, or anything else, if needed.

Any input would be appreciated.

Thanks,
Mike
 
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Old May 20, 2015 | 06:10 PM
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Numbersdummy might be a good one to ask..
 
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Old May 20, 2015 | 09:59 PM
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Are you talking about full size Broncos or Bronco II's?

Either way, things are not adding up. Full size did not have 3.0 motors, and afaik, neither did the BII.

BII did not have a granny 4 speed.

Please clairify.
 
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Old May 21, 2015 | 08:29 AM
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You are correct. I mis-spoke.
Both trucks are full sized Broncos with 300 in straight six motors. (4.9)
 
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Old May 22, 2015 | 12:45 AM
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Everything should swap over, including clutch masters--probably better to keep the master, line, slave etc as a unit in the swap if you can. Bleeding, especially the 5 speed jobs, seems to be a pita.

Don't track me down and kill me if you have to change something. Both have the 8.8 rear axle?
 
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Old May 23, 2015 | 09:18 AM
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It looks like they both have the same axle.

Thanks for your input. I'm going to "go for it".
 
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