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Old 04-22-2019, 04:13 PM
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Sos

Can anyone tell me how difficult a 4.0-liter to 4.3-liter swap would be? Are any add-ons needed?
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Old 04-22-2019, 04:53 PM
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From a Jeep to a Cadillac it’s kinda easy as long as you have the correct Knutson rods and hudiki valves.
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Old 04-22-2019, 07:43 PM
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What is required is simple.

Lots of cash to drop it in the lap of someone willing to do it.

Or lots of time to understand both systems and engineer a process to mate them..


Bottom line all engine swaps are the same, can you shoe horn it in and wire it up like it expects?
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Old 04-23-2019, 11:35 PM
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Originally Posted by djwestsiberia View Post
Can anyone tell me how difficult a 4.0-liter to 4.3-liter swap would be? Are any add-ons needed?
Why would you want to do this?
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Old 04-24-2019, 01:18 PM
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this question really has no merit considering no one here knows your skill level behind a wrench. on top of that, I doubt many people here would agree that a 4.3 is a better engine than a Toyota 4.0
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