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Old 10-19-2011, 01:03 PM
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How much less do they weigh compared to say a iron head HP500EFI?
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Old 10-19-2011, 01:14 PM
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How much less do they weigh compared to say a iron head HP500EFI?
I think iron headed big blocks are somewhere around 650-700 lbs. An aluminum block/head LSx should be about 450
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Old 10-19-2011, 02:16 PM
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A GM car guy in my group suggested a while back picking up some "junkyard" LS's and throwing them in a boat. How realistic is that? Would the auto engines hold up?
There are a few guys around with Turbo 5.3s in Jet boats... straight out of the junkyard, add ARP rod bolts, carb, & intake... I cant say that I know of anyone running them in a larger tub, though.
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Old 10-19-2011, 02:28 PM
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http://www.offshoreonly.com/forums/g...rs-hiding.html

Relevant to this discussion.
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Old 10-19-2011, 02:51 PM
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There are a few guys around with Turbo 5.3s in Jet boats... straight out of the junkyard, add ARP rod bolts, carb, & intake... I cant say that I know of anyone running them in a larger tub, though.
Seems like a pair in a 28' hull (kinda like the Team Kansas Saber) would be a helluva lotta fun.
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Old 10-19-2011, 05:00 PM
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My Daily Driver is a 2004 CrewCab Silverado with a Supercharged 6.0. I bought the Magnuson supercharger kit new, swapped it out in about 8 hrs. I run 8.5psi of boost. does Great for a 6,500+ pound truck with a smallblock. It can light the tires going 50+ mph. Other than pushing the guts out of the transmission I have not had 1 problem in 6yrs (well, buying so many rear tires is a problem to my wife ) it shifts at 5700 rpm, it can go over 145mph (that was my limit, truck was still pulling hard) it gives most mustangs fits There is a supercharged cobra at my work that will smoke me, I don't mess with him....
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Old 10-19-2011, 05:31 PM
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There is a supercharged cobra at my work that will smoke me, I don't mess with him....
I might have your buddy with the cobra covered with my pickup truck. It's just a 6.0 with a rotary muffler...

I can attest to how awesome these LS motors respond to boost



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Old 10-19-2011, 05:45 PM
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that is pretty impressive!
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Old 10-19-2011, 06:51 PM
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LSx = FTW
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Old 10-19-2011, 07:01 PM
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Seems like a pair in a 28' hull (kinda like the Team Kansas Saber) would be a helluva lotta fun.
I got a 28 foot hull that could use to be lighten up in the back .
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