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350 vortec transmission on a 4.3l vortec

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Old 09-26-2019, 10:18 AM
Bryan Alexander Prevost's Avatar
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Default 350 vortec transmission on a 4.3l vortec

I have a 98 s10 zr2 extended cab with the 4.3l v6 vortec and was wondering if the transmission from a 97 Yukon (350 v8 vortec) would work. Plan to use the tease as well because both trucks have the electric 4x4 but couldn’t find a driveshaft to fit the s10 due to a solid axel swap. Any help would be appreciated.
 
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Old 09-28-2019, 08:22 AM
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I don't believe the trans will work with the transfer case in your truck, the bolt pattern for joining the two is different. The one in your truck has a 5 bolt pattern and the donor has a 6 bolt pattern.
 
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Old 09-28-2019, 01:46 PM
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I think he's talking about using both the transmission AND transfercase from the Yukon

I haven't done much research into it yet, but this is something I've been throwing the idea around for myself, using a transfercase for a full size. I have a 4L65e to pair with my future LS swap, my stock transfercase is already seeping fluid from the casing, so I want to replace it anyhow, figured one from a full size that comes bolted up to a V8 platform may be a little stronger. But again, haven't looked much into it yet... Mounting it would be the easy part, I'm just not sure about driveshaft compatibility and wiring to make it work.
 
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Old 02-28-2020, 07:52 AM
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i'd recommend a 4L70E for any sort of swap personally. 4L60s are known to be fragile at moderate torque loads.
 
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Old 02-28-2020, 08:46 AM
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*The OP has not been around since 9-2019. Thread closed.*
 
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