LS1, LS2 or LS7 in a BOAT ???
Thread Starter
Teching In
Joined: Jun 2002
Posts: 45
Likes: 0
From: Stavanger , Norway, Europe
LS1, LS2 or LS7 in a BOAT ??? Anyone know if this has been done, or if any company is doing this.
I am looking to get a blown LS7 into a fairly fast boat, goal is 100 MPH :-)
So if anyone could point me in the right directions ?
TIA
regards
Rune
I am looking to get a blown LS7 into a fairly fast boat, goal is 100 MPH :-)
So if anyone could point me in the right directions ?
TIA
regards
Rune
TECH Resident
Joined: Jun 2004
Posts: 840
Likes: 0
You are better off with a LS1 stroker... About as much cu/in as a LS7 in a marine application.. Althought I would actually run the newest generation big block bowtie motor 8100 vortec... I would run LS1 coils and a motec, halltech etc EMS with a crank trigger...
There are alot of ways to go but in a constant RPM marine application where TQ is king the BBC rules...
There are alot of ways to go but in a constant RPM marine application where TQ is king the BBC rules...
TECH Resident
Joined: Jun 2004
Posts: 840
Likes: 0
An aluminum block LS1 would help you some...
We ran into the 90mph range with a JET DRIVE on a fiberglass speedboat about 16.5' that had a naturally aspirated 455 olds with a edelbrock manifold, carb and marine cam..... Its all about TQ on boats.... Yes it was nuts...
I still say big block + big belt drive supercharger....
Maybe even a big *** thumper turbo..
Remember air to water intercooing is so easy to do on a boat... You dont need an exchanger or water tank.
We ran into the 90mph range with a JET DRIVE on a fiberglass speedboat about 16.5' that had a naturally aspirated 455 olds with a edelbrock manifold, carb and marine cam..... Its all about TQ on boats.... Yes it was nuts...
I still say big block + big belt drive supercharger....
Maybe even a big *** thumper turbo..
Remember air to water intercooing is so easy to do on a boat... You dont need an exchanger or water tank.
Thread Starter
Teching In
Joined: Jun 2002
Posts: 45
Likes: 0
From: Stavanger , Norway, Europe
Originally Posted by V8_DSM_V8again
An aluminum block LS1 would help you some...
We ran into the 90mph range with a JET DRIVE on a fiberglass speedboat about 16.5' that had a naturally aspirated 455 olds with a edelbrock manifold, carb and marine cam..... Its all about TQ on boats.... Yes it was nuts...
I still say big block + big belt drive supercharger....
Maybe even a big *** thumper turbo..
Remember air to water intercooing is so easy to do on a boat... You dont need an exchanger or water tank.
We ran into the 90mph range with a JET DRIVE on a fiberglass speedboat about 16.5' that had a naturally aspirated 455 olds with a edelbrock manifold, carb and marine cam..... Its all about TQ on boats.... Yes it was nuts...
I still say big block + big belt drive supercharger....
Maybe even a big *** thumper turbo..
Remember air to water intercooing is so easy to do on a boat... You dont need an exchanger or water tank.
Should give me my TQ and RPM scale needed to go fast :-)
But i have not heard of any company making marine parts for the LS1, ie, Exhaust manifoils with water jackets (cooling) etc.
A 427 500 hp and 500 TQ + Kennebell 10 psi should net me atleast 700 Hp and 700 TQ ?
Rune
TECH Resident
Joined: Jun 2004
Posts: 840
Likes: 0
Originally Posted by Rune
I was thinking LS2 or LS7 427 cui, with a Kennebell Blower, BS3 or any other intelligent managment system
Should give me my TQ and RPM scale needed to go fast :-)
But i have not heard of any company making marine parts for the LS1, ie, Exhaust manifoils with water jackets (cooling) etc.
Rune
Should give me my TQ and RPM scale needed to go fast :-)
But i have not heard of any company making marine parts for the LS1, ie, Exhaust manifoils with water jackets (cooling) etc.
Rune
Reason 3 is the rod ratio combined with being a constant RPM application...
Big blocks are popular for a reason in the marine industry.
http://powerandmotoryacht.com/engines/0101vortec/
According to GM you’ll get maximum torque, which is 490 lbs-ft, at 3200 rpm, a popular cruising speed. The high-performance version offers a maximum 420 hp at the rated 5000 rpm, and maximum torque is said to be 505 lbs-ft at 4000 rpm.
More Importantly... It's the hull that you choose & the rigging, more so than the power sometimes. An air entrapment hull(tunnel or catamaran) has an advantage of 15-40 m.p.h., with the same power...again, this depends on the rigging. Will you be using a straight shaft surface-drive, a sterndrive, a V-drive, a straight inboard shaft, or??? What boat are using? Gar
Trending Topics
Teching In
Joined: Jun 2004
Posts: 33
Likes: 0
i think the mastercraft ski boats used to use some sort of a version of the ls1 engine, now you can get a 6 liter LQ9 in them i believe,
i think a marine engine is built completely different from a automobile engine, i dont think a engine directly out of a car would last too long, marine engines are built to run high rpms for extended periods of time
i think a marine engine is built completely different from a automobile engine, i dont think a engine directly out of a car would last too long, marine engines are built to run high rpms for extended periods of time
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
Teching In
Joined: Jun 2002
Posts: 45
Likes: 0
From: Stavanger , Norway, Europe
Originally Posted by LS1GMCTruck
It's the hull that you choose & the rigging, more so than the power sometimes. An air entrapment hull(tunnel or catamaran) has an advantage of 15-40 m.p.h., with the same power...again, this depends on the rigging. Will you be using a straight shaft surface-drive, a sterndrive, a V-drive, a straight inboard shaft, or??? What boat are using? Gar
Its a 24 feet powerboat, called Hydrolift "fly without wings"
stepped hull, single V hull, but manage 74 knots with a "old" EFI equipped Pocharged 400 cui big block (i think) rated @ 505 Hp.
A C5R 427 can run for WOT 24 hours and still live to tell the tale, so i was hoping to try this route.. :-)
But problem is marine equipment around engine.
On The Tree
Joined: Jul 2003
Posts: 166
Likes: 0
From: San Jose, CA
You can get the Vortec 6000 in marine packages from many sources... which is essentially the LQ4/LQ9 used in the trucks... this is a variant on the LS1. The LQ4 was tested/certified as a Marine engine due to their being stricter reliability standards, and they wanted their workhorse truck engine to be super-reliable. The components... other than the computer programming are exactly the same. (With the exception of exhaust manifolds/fire suppressors/and other marine related bolt-ons.)
Thread Starter
Teching In
Joined: Jun 2002
Posts: 45
Likes: 0
From: Stavanger , Norway, Europe
Originally Posted by Exotic Performance Plus
I haven't see any LS1 equipped boats yet, which is surprising. I was thinking of swapping out the 351 Windsor in my old Correct Craft with an LS1 based engine. Bob
I tried to email them, but no reply so far....
http://www.indmar.com/index.cfm?reset=1
this guy has a boat with Ls1 installed
http://www.davedrive.com/v_2000_malibu_lx.htm
Anyone have more info ?
On The Tree
Joined: Feb 2002
Posts: 173
Likes: 0
From: TX
I'm all about it...I just need to find a nice finished out hull in need of a motor!
My friend has a 19' Liberator with a 250 Merc Outboard on it, I couldn't imagine something that size or just a bit bigger with the power of a lightweight LS1 pushing it...
My friend has a 19' Liberator with a 250 Merc Outboard on it, I couldn't imagine something that size or just a bit bigger with the power of a lightweight LS1 pushing it...
TECH Resident
Joined: Dec 2004
Posts: 841
Likes: 0
From: Baltimore, MD.
Hey Guys...
I don't know if the LSx series motor has enough displacement for your speed (and therefore power) goals at the kind of duty cycle that a boat sees. But I do know they're being put in a variety of boats these days.
Here's a link to a previous discussion: https://ls1tech.com/forums/showthrea...manifolds+boat (Use the search function, it really works)
I know it has some info on exhaust manifolds (at least factory ones, don't have any idea if aftermarket ones are available yet).
'Dreamin'
I don't know if the LSx series motor has enough displacement for your speed (and therefore power) goals at the kind of duty cycle that a boat sees. But I do know they're being put in a variety of boats these days.
Here's a link to a previous discussion: https://ls1tech.com/forums/showthrea...manifolds+boat (Use the search function, it really works)
I know it has some info on exhaust manifolds (at least factory ones, don't have any idea if aftermarket ones are available yet).
'Dreamin'
TECH Addict
Joined: Oct 2002
Posts: 2,793
Likes: 100
From: Mefis
There is a 6.0L offered by GM as a marine engine, so the manifolds should be out there somewhere.
http://www.gm.com/automotive/gmpower...000_marine.pdf
http://www.gm.com/automotive/gmpower...000_marine.pdf
Here ya go! 
https://ls1tech.com/forums/conversions-swaps/332942-hybrid-pics-mocking-engine-up-not-56k.html
It'll be a heads/cam setup this year. Possibly twin turbo next
https://ls1tech.com/forums/conversions-swaps/332942-hybrid-pics-mocking-engine-up-not-56k.html
It'll be a heads/cam setup this year. Possibly twin turbo next
I ruin the end of films...
iTrader: (2)
Joined: Nov 2002
Posts: 1,545
Likes: 0
From: Taking back some video tapes
Originally Posted by SmokingWS6
Here ya go!
https://ls1tech.com/forums/showthread.php?t=332942
It'll be a heads/cam setup this year. Possibly twin turbo next
https://ls1tech.com/forums/showthread.php?t=332942
It'll be a heads/cam setup this year. Possibly twin turbo next
