Ecotec 5.3 and 6.2L

Automotive powered airboat discussion.
PistolPete
Southern Airboat Member
Posts: 27
Joined: Tue Oct 02, 2018 7:24 pm

Ecotec 5.3 and 6.2L

Postby PistolPete » Fri Nov 30, 2018 2:23 pm

Anyone have any experance running either of these the 5.3 L83 or 6.2 L86. Concidering putting on a 14’ Marty Bray hull for my son.

PistolPete
Southern Airboat Member
Posts: 27
Joined: Tue Oct 02, 2018 7:24 pm

Re: Ecotec 5.3 and 6.2L

Postby PistolPete » Tue Dec 11, 2018 11:24 pm

Well I just purchased a 2015 6.2l L86 with 26k miles I will let you all know how it turns out. It will be several months before rigging is built and boat is finished. We are planning on using ox box 2.55 ratio and 80" 3 blade water walker Falcon or Maximus prop. My son changed his mind on the hull and bought a new 13.6 Alumitec Hull. So here we go

RazorsEdge
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Re: Ecotec 5.3 and 6.2L

Postby RazorsEdge » Mon Dec 31, 2018 12:31 pm

Sounds like it should be a great setup. Direct injection / E85. Great power numbers. I got a L83 on the stand but my CT355 is still running strong for now. You doing the wiring harness yourself?

REAL 7.3
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Joined: Sun Jun 07, 2009 8:44 pm
Location: Mulberry, Fl

Re: Ecotec 5.3 and 6.2L

Postby REAL 7.3 » Mon Dec 31, 2018 3:08 pm

I'm currently building a 14' vacuum infused ricochet with a 2018 L83 5.3 with a 78mm turbo and a 2:68 ballistic and 80" 4 blade falcon.
11' Gillieo PE90

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OneBFC
Southern Airboat Member
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Joined: Tue Sep 11, 2012 1:04 am

Re: Ecotec 5.3 and 6.2L

Postby OneBFC » Mon Dec 31, 2018 7:30 pm

REAL 7.3 wrote:I'm currently building a 14' vacuum infused ricochet with a 2018 L83 5.3 with a 78mm turbo and a 2:68 ballistic and 80" 4 blade falcon.


Man, your going to have a lot of pitch in an 80 4 blade falcon. I have run that same setup with a 2.38 ratio on my ecoturd and it was pitched near the 2.0 mark and I spun it around 5300 on the water on 93 pump and 5600 on e50.

Seriously consider more prop. I would lean toward a 4 blade Maximus at 80 inches or find a way to add a bunch of diameter.

Good luck with the build!
-Russ
-----------------------------------
The only thing stopping you is FEAR
400+hp Ecotec, 12x7.6 DBDO, 80" 3B Maximus, 2.3 OX,85+mph, water = purely optional
Life begins at 2 BAR, Just a good ole boy


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