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5.3LS ??

Posted: Fri Jun 20, 2014 10:25 am
by Superduty88
Hey guys im in the process of putting my boat together its a 12x8 aluminum step deckover I got a 2007 5.3 LS it had 60 thousand miles when it was pulled its a very clean motor.. I know a lot of guys might disagree with me but im going with a carburetor i got the intake MSD ignition and the carb already but im wanting to put a cam in it nothing crazy something just to give it a few more hp more then likely ill have a rotator 2.12 not sure what prop yet.. any info would be appreciated :florida:

Re: 5.3LS ??

Posted: Fri Jun 20, 2014 10:39 am
by jaxduramax
Is that motor going on that deckover you've had in the classifieds?

Re: 5.3LS ??

Posted: Fri Jun 20, 2014 10:42 am
by scottyroll
2 blade "R" or whirlwind whisper tip should do well with that motor and box combo. Feel free to contact any of the prop manufactures - all of them produce great products and strive for top notch customer service to all airboaters. There are several threads on cams for these engines if you search for them. Nothing wrong with running a carb on that setup either. You should have your self a good rig when your done 8)

Re: 5.3LS ??

Posted: Fri Jun 20, 2014 11:02 am
by One Eyed Gator
I would do a little reading there is a lot of info out on cams. Article indicates that most after market cams do produces more HP and torque but over rpm an airboat motor usually turns.

I know you can not believe everything you read. Check out the article below. Just food for thought.

http://www.carcraft.com/techarticles/13 ... omparison/

We a 99' 5.3 on a buddies boat with a 2.68 and 78" Maximus. thing was way over pitched but was a tractor would tun a 42. Boat was and older heavy alumitec deckover.

Gonna a 2.55 box and building a cage for a bigger prop. I was very impressed with the bone stock 5.3 and got great of fuel consumption.

Re: 5.3LS ??

Posted: Fri Jun 20, 2014 11:45 am
by Superduty88
jaxduramax wrote:Is that motor going on that deckover you've had in the classifieds?
No I bought a new boat

Re: 5.3LS ??

Posted: Fri Jun 20, 2014 11:53 am
by Superduty88
Iv been reading a lot on them a lot of guys have different opinions thats for sure...I was just seeing if anyone on SA has close to the same set up on there boat that I'm doing and if they are running a different cam if so what one did you go with

Re: 5.3LS ??

Posted: Fri Jun 20, 2014 11:58 am
by Superduty88
This is the boat it's going on

Re: 5.3LS ??

Posted: Fri Jun 20, 2014 12:45 pm
by Bagman
If it was me, i would definitely get a custom cam, hardened pushrods, and change the valve springs at a minimum. I use Cammotion for my cams. Let me know if you have any more questions

Re: 5.3LS ??

Posted: Thu Jun 26, 2014 7:07 am
by ls1airboat
ill be changing the cam , pushrods and springs in mine

Re: 5.3LS ??

Posted: Thu Jun 26, 2014 11:15 am
by ptr34
2 blade NGR 78"

Re: 5.3LS ??

Posted: Thu Jun 26, 2014 11:34 am
by Birddog247
ptr34 wrote:2 blade NGR 78"
Couldn't agree more. Just recently went to a 2 blade ngr 80" on a similar setup. Great performance all around.

Re: 5.3LS ??

Posted: Thu Jun 26, 2014 1:02 pm
by Superduty88
That's the blades I'm shootin for

Re: 5.3LS ??

Posted: Thu Jun 26, 2014 4:54 pm
by gso480jr
Is that ls 5.3 a d.o,d,/afm motor? if yes, be prepared to spent money on lifters, cam, delete kit and you will have a good start.

Re: 5.3LS ??

Posted: Thu Jun 26, 2014 9:44 pm
by Superduty88
It's was pulled from a 07 chevy pickup truck not sure if it's DOD or not I plan on putting money in it to make it right this is my first ls motor I'm use to dealing with the old sbc so I'm kinda learning as I go

Re: 5.3LS ??

Posted: Thu Jun 26, 2014 9:51 pm
by gso480jr
look at valley cover under intake. do you see an electrical connection on the left rear?

Re: 5.3LS ??

Posted: Tue Sep 02, 2014 12:07 pm
by ls1airboat
hey ..hows the boat comming along ?

Re: 5.3LS ??

Posted: Mon Sep 08, 2014 3:16 pm
by Superduty88
ls1airboat wrote:hey ..hows the boat comming along ?
It's comeing we just finished my brothers boat so it's my turn to get mine going now....

But I have one more question for you guys what carburetor would y'all recommend for that motor its pretty much stock for now I was thinking a quick fuel 650 but not sure if it's gonna be to small or what thanks for the input :florida:

Re: 5.3LS ??

Posted: Mon Sep 08, 2014 3:26 pm
by scottyroll
Superduty88 wrote:
ls1airboat wrote:hey ..hows the boat comming along ?
It's comeing we just finished my brothers boat so it's my turn to get mine going now....

But I have one more question for you guys what carburetor would y'all recommend for that motor its pretty much stock for now I was thinking a quick fuel 650 but not sure if it's gonna be to small or what thanks for the input :florida:
My Holley 600 worked well. I don't see why even a 500 wouldn't work well after a tune up. no sense and spending more on gas :blackeye:

Re: 5.3LS ??

Posted: Mon Sep 08, 2014 3:44 pm
by ls1airboat
i can get the ecm and the efi done for pretty cheap...mine is running perfect now ..real strong even with a stock tune.

Re: 5.3LS ??

Posted: Mon Sep 08, 2014 3:54 pm
by Superduty88
scottyroll wrote:
Superduty88 wrote:
ls1airboat wrote:hey ..hows the boat comming along ?
It's comeing we just finished my brothers boat so it's my turn to get mine going now....

But I have one more question for you guys what carburetor would y'all recommend for that motor its pretty much stock for now I was thinking a quick fuel 650 but not sure if it's gonna be to small or what thanks for the input :florida:
My Holley 600 worked well. I don't see why even a 500 wouldn't work well after a tune up. no sense and spending more on gas :blackeye:
Sweet that sounds good enough for me thanks Scotty

Re: 5.3LS ??

Posted: Mon Sep 08, 2014 3:57 pm
by Superduty88
ls1airboat wrote:i can get the ecm and the efi done for pretty cheap...mine is running perfect now ..real strong even with a stock tune.
It's to late now I got all my stuff for the motor just lacking carb and headers ill deff will call you on the next boat.. Next one is definitely gonna be EFI

Re: 5.3LS ??

Posted: Mon Sep 08, 2014 4:05 pm
by ls1airboat
i got ya...ill be ready to ride in about 2 weeks or so

Re: 5.3LS ??

Posted: Mon Sep 08, 2014 4:17 pm
by Superduty88
Nice I'm shooting for mid October the wife wants us to be on the river for her birthday...looks like I better get off southern airboat and get to work :scratch: lol

Re: 5.3LS ??

Posted: Mon Sep 08, 2014 4:20 pm
by ls1airboat
you better lol..