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difference between V10 400R vs V8 450R

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difference between V10 400R vs V8 450R

Old 07-23-2023, 04:07 PM
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Default difference between V10 400R vs V8 450R

Hi!

I have a 450R which I am very happy with.

Upgraded from Johnson V8 3.6 300 - Promax 300 SVS - 2 x 2.5 EFI SS - Verado 350 Sci - Verado 400R L6 and now 450R.

I wonder what is the performance difference between a V10 Verado 400R and a V8 450R? The V8 500R is too much both in money and hp for my ol Phantom.

I have this and 2 more seasons left on my warranty and I consider to downsize when the warranty expire (!)

Cheeers Toffen
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Old 07-23-2023, 07:35 PM
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Itís taller has 418hp and has a bigger LU. Not really an upgrade for your application. Wait for a 500R to come down and save up.
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Old 07-24-2023, 06:00 AM
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Originally Posted by hogie roll
It’s taller has 418hp and has a bigger LU. Not really an upgrade for your application. Wait for a 500R to come down and save up.
Hi!

If I am correct the Mercury Racing version has a Sportmaster LU of same size as 450R?

Cheeers Toffen
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Old 07-24-2023, 07:10 AM
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The propeller shaft is fatter. The 450R broke too many lower units.
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Old 07-24-2023, 05:00 PM
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Originally Posted by hogie roll
Itís taller has 418hp and has a bigger LU. Not really an upgrade for your application. Wait for a 500R to come down and save up.
Which one has 418HP?
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Old 07-24-2023, 06:50 PM
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Originally Posted by cheech
Which one has 418HP?
epa cert on 400R is actually 414hp
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Old 07-24-2023, 09:26 PM
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Originally Posted by Markus
The propeller shaft is fatter. The 450R broke too many lower units.
400R has the same basic Sportmaster gearcase as the 450R, but I think it has a larger diameter upper driveshaft/splines and different waterpump.
The 500R has a completely new gearcase, with a larger diameter driveshaft, propshaft, and better waterpump.
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Old 07-25-2023, 03:15 PM
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Correct - I thought Toffen referred to the 500R.
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