Engine swap
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4th Gear
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Engine swap
I bought a 2000 F-350 as a project. The V-10 engine was bad, I was aware of that when I bought it. I have come to the realization that I do not want to replace the V-10 as I don't have any confidence in this engine. Does anyone know if the 5.4 V-8 will bolt directly to the existing transmission or will I need a conversion/adaptor? Any and all help is greatly appreciated!!!
I just signed up on this forum under the "FREE" signup. If this forum is as helpful as I've been told I will sign up for a better membership! Thanks in advance!!
I just signed up on this forum under the "FREE" signup. If this forum is as helpful as I've been told I will sign up for a better membership! Thanks in advance!!
Fleet Mechanic
Joined: Mar 2023
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I bought a 2000 F-350 as a project. The V-10 engine was bad, I was aware of that when I bought it. I have come to the realization that I do not want to replace the V-10 as I don't have any confidence in this engine. Does anyone know if the 5.4 V-8 will bolt directly to the existing transmission or will I need a conversion/adaptor? Any and all help is greatly appreciated!!!
I just signed up on this forum under the "FREE" signup. If this forum is as helpful as I've been told I will sign up for a better membership! Thanks in advance!!
I just signed up on this forum under the "FREE" signup. If this forum is as helpful as I've been told I will sign up for a better membership! Thanks in advance!!
If you absolutely hate the v10 and must swap a V8 into it,,,then maybe a Chevy LS or an old school Ford Windsor (like a 302 or 351) might be a better option.
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Last edited by Antonm23; Jun 11, 2026 at 12:56 PM. Reason: spelling and grammar
Logistics Pro
Joined: Jan 2010
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^^^ This.
The 5.4 is a good engine as long as you take care of it, deal with the cam phasers, and have the issues with the spark plugs dealt with. Same goes for the V10, though with its higher torque it is actually more desirable than the 5.4.
They are VERY similar engines, as pointed out above - they're called 'modular' engines for a reason, the only real differences are the casting lengths, cams, and cranks. Even the castings for the heads/block are made by adding another section to the mold to get the V10.
If you don't like the V10, you won't like the V8, and I agree that a different swap might be what you're after. Depending on the level of tech you want in it, you could go for an LS swap, an old Windsor, or a 460. I don't know if anyone's done it yet, but you may even want to look at a 5.0 Coyote.
The 5.4 is a good engine as long as you take care of it, deal with the cam phasers, and have the issues with the spark plugs dealt with. Same goes for the V10, though with its higher torque it is actually more desirable than the 5.4.
They are VERY similar engines, as pointed out above - they're called 'modular' engines for a reason, the only real differences are the casting lengths, cams, and cranks. Even the castings for the heads/block are made by adding another section to the mold to get the V10.
If you don't like the V10, you won't like the V8, and I agree that a different swap might be what you're after. Depending on the level of tech you want in it, you could go for an LS swap, an old Windsor, or a 460. I don't know if anyone's done it yet, but you may even want to look at a 5.0 Coyote.
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4th Gear
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The V10 and V8 engines are very similar in architecture and even share many common internal components (like the pistons and connecting rods are the same between both engines). If you "don't have and confidence" in the V10, then you should also not have any confidence in the V8's either.
If you absolutely hate the v10 and must swap a V8 into it,,,then maybe a Chevy LS or an old school Ford Windsor (like a 302 or 351) might be a better option.
...
If you absolutely hate the v10 and must swap a V8 into it,,,then maybe a Chevy LS or an old school Ford Windsor (like a 302 or 351) might be a better option.
...
Tuned
Joined: Dec 2017
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From: Houston
To clarify, the 2000 V-10 is a 2 valve. The newer 3 valve engines have the wonky cam phasers. The 2V does have the ejecting spark plug issue, which is not a big deal once you fix one or two then keep the rest adequately torqued.
Frmr Ford Trans Engr
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I really like that idea but those are getting very hard to come by. My first choice was the 12 valve Cummins I have sitting in the shop but swapping from gas to diesel is a bit more than I can get to for a while. Just wanting to get it up and running so I can use it til then! Thanks for the input, much appreciated!!
If you want a Cummins (which again I fully support), then go find a blown up 6.0 or 6.4 truck (which is literally most of them) and Cummins swap that.
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Last edited by Antonm23; Yesterday at 02:34 PM. Reason: spelling and grammar
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The above from Anton is where I was going. Rebuild your v10 or find a good running v10 and swap it in. The v10 is a great engine, 5.4 is absolutely not, and a diesel swap is too much money with your starting configuration.
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