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PostPosted: Wed Feb 20, 2019 9:11 am 
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Shark

Joined: Wed Jul 27, 2011 9:07 am
Posts: 133
Location: Freeland, Michigan
****Putting here too******

I am going to be buying 2 new long-blocks this week finally. Still trying to decide to upgrade. I have an 2001 Four Winns 298 Vista with twin Volvo Penta 5.7 GSI PEFS motors and 1.95 DP-SM duoprop drives. The motors are 280 HP TBI with MEFI 3 ECU. Just had injectors sent out to Witchhunter Peformance (cleaned/tested) and rebuilt throttlebody and fuel pumps. I plan on keeping OEM intake and TBI and having MEFI Bob remap ECU for 1 of the following long-blocks.

VP 5.7 GXI 320 HP
https://www.michiganmotorz.com/350ci...5-p-10888.html

GM Marine 6.2 Stroker 340 HP
https://www.michiganmotorz.com/377ci...ent-p-545.html

GM HT383 323 HP
https://www.chevrolet.com/performanc...l-block-ht-383

I also plan on running Hardin Marines Seaward series exhaust and adding Freshwater cooling. What do you think?

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2001 Four Winns 298 Vista
Twin 5.7 Volvo Penta GSI DP


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PostPosted: Wed Feb 20, 2019 11:36 am 
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email admin your custom rank

Joined: Sun Mar 13, 2016 6:49 pm
Posts: 324
Location: NY
Sounds good to me.

I've always wondered if I could replace a 5.0 GXi with a 5.7 GXi.

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2006 Four Winns Horizon 200
Volvo Penta 5.0 GXi/SX


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PostPosted: Wed Feb 20, 2019 11:46 am 
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Shark

Joined: Wed Jul 27, 2011 9:07 am
Posts: 133
Location: Freeland, Michigan
Yes I believe as long as they will bolt-in and your drive can handle the power-you can get ECU's remapped. This is the place to get the MEFI units remapped.

http://mefiburn.com/mefituning.asp

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2001 Four Winns 298 Vista
Twin 5.7 Volvo Penta GSI DP


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PostPosted: Thu Feb 21, 2019 10:04 am 
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email admin your custom rank

Joined: Sun Mar 13, 2016 6:49 pm
Posts: 324
Location: NY
Oh hell yeah!

Time to blow up the 305 LOL

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2006 Four Winns Horizon 200
Volvo Penta 5.0 GXi/SX


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