|
|
Switching to more efficient might sound like a good idea until you really sit down and figure out the cost benefit. It's way cheaper to feed in more gas $$$$ over the long term unless you plant to keep it for let's say 50 years. Maybe then you will break even. Good luck.
|
Originally Posted by underpsi68
(Post 4643938)
That's why I went with a 8.1. It's the big brother of the LS series.
Just curious what the load is at your 3000rpm cruise speed? At 3k I'm roughly 30% throttle. This isn't a offshore boat and your going to laugh when I tell you but we all start somewhere. Its a 25ft pontoon and the motor is a ls 5.3l with twin turbos. Will run really close to 70mph at Wot. |
Originally Posted by VoodooRob
(Post 4643806)
Maybe go up a prop pitch for lower rpm at cruise, trade off is your top speed rpm will be affected.
Its like going from level ground driving a car and then going up hill. You have to give it more gas to maintain your speed and rpms. |
^^^ I ve learned this after swapping my 565s for 525efi engines. There truly is no replacement for displacement..... especially on a boat |
I'm pretty happy if gas is the only thing I buy in a season.
New outdrive = 2 or 3 seasons of gas money New motor = 4 or 5 seasons of gas money |
| All times are GMT -5. The time now is 09:44 PM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.