1990 bronco engine swap
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Mountain Pass
Joined: Oct 2012
Posts: 103
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I've been trying to dig a little deeper into compatibility issues with the 5.0 to 5.8 swap. If I understood Conanski's comment correctly, my current 5 spd transmission should mate fine with a similar year 5.8 motor as long as I get a flywheel/clutch suited for the 5.8 vs the 5.0. That sounds relatively easy to me, but am I missing something?
Also, I'm seeing some F250s for sale with 5.8 that could serve as a potential donor vehicle. Some of them have a 5spd manual transmission. Does anyone know if the 5spd in a heavy duty truck would be different than what came in my Bronco?
Also, I'm seeing some F250s for sale with 5.8 that could serve as a potential donor vehicle. Some of them have a 5spd manual transmission. Does anyone know if the 5spd in a heavy duty truck would be different than what came in my Bronco?
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
Engine balance is different between the two motors so the flywheels are identical except for the counterbalance weight built into it, but that is enough to require a different flywheel and yes it's that easy.
Yes the trans is different in the HD trucks, they got a ZF5 gearbox with a granny low 1st gear and an optional PTO while your truck has a Mazda 5sp. The ZF is better for HD uses but is a bit clunky to use, while the M5OD is better for driving around.
Yes the trans is different in the HD trucks, they got a ZF5 gearbox with a granny low 1st gear and an optional PTO while your truck has a Mazda 5sp. The ZF is better for HD uses but is a bit clunky to use, while the M5OD is better for driving around.
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