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-   -   difference between V10 400R vs V8 450R (https://www.offshoreonly.com/forums/general-boating-discussion/380004-difference-between-v10-400r-vs-v8-450r.html)

Toffen 07-23-2023 04:07 PM

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 (!) https://www.screamandfly.com/images/smilies/smile.gif

Cheeers Toffen

hogie roll 07-23-2023 07:35 PM

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.

Toffen 07-24-2023 06:00 AM


Originally Posted by hogie roll (Post 4874212)
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

Markus 07-24-2023 07:10 AM

The propeller shaft is fatter. The 450R broke too many lower units.

cheech 07-24-2023 05:00 PM


Originally Posted by hogie roll (Post 4874212)
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.

Which one has 418HP?

hogie roll 07-24-2023 06:50 PM


Originally Posted by cheech (Post 4874362)
Which one has 418HP?

epa cert on 400R is actually 414hp

Falcon 07-24-2023 09:26 PM


Originally Posted by Markus (Post 4874247)
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.

Markus 07-25-2023 03:15 PM

Correct - I thought Toffen referred to the 500R.


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