LS7 Laguna S3

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LS7 Laguna S3

Post by REVINKEVIN on Sat Mar 22, 2014 11:20 pm

Hello. I just found this site. I looked for a Laguna to build for about 5 years. Well, now I have one. I picked it up a couple of months ago. I am now taking it apart to get it right. I bought an LS7 from a 2008 Z06. I got everything as in wire harness, A/C, computer, and, well, a lot more. I just bought my Soft 8 wheels and sent them off to Stockton Wheels for their upgrades. 17X10 front and 17X11.5 rear. I pulled the nose off and I am working on that now. My interior is being done in all black right now. I took the LS7 to a shop in Houston, HHRC, to install the Mast Motorsports cam and spring kit. So, I guess I am started on the path to getting a 1976 Laguna S3 back on the road. Cheers.
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Re: LS7 Laguna S3

Post by Limey SE on Sun Mar 23, 2014 12:32 am

WOWSERS In for the build of this one ! Cant wait to see its progress

Welcome aboard !
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Re: LS7 Laguna S3

Post by 1973montec on Sun Mar 23, 2014 7:57 am

wow
you are on a roll......

welcome
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Re: LS7 Laguna S3

Post by dynchel on Sun Mar 23, 2014 9:30 am

Welcome, I saw your post at c/t. Razz
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Re: LS7 Laguna S3

Post by Wallyuph on Sun Mar 23, 2014 1:37 pm

Welcome you will love that set-up.
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Re: LS7 Laguna S3

Post by JiMi_DRiX on Sun Mar 23, 2014 1:44 pm

That sounds sick. Pics please!
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Re: LS7 Laguna S3

Post by REVINKEVIN on Sun Mar 23, 2014 3:07 pm

Some pics. Opps, I can't post images from external links for 7 days.
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Re: LS7 Laguna S3

Post by JiMi_DRiX on Sun Mar 23, 2014 4:19 pm

Ahh, yeah. Will it let you add them into a PM? I'll post them for you!
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Re: LS7 Laguna S3

Post by Wallyuph on Mon Mar 24, 2014 9:33 am

Posting some photos for us from Kevin on his ride. Wally


Here are a few pics. A couple are of paint schemes I have been mulling over. I think I am going black to and white lower

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Re: LS7 Laguna S3

Post by Brainstain on Mon Mar 24, 2014 10:33 am

Yes!!! I can't wait to see more of this!  

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Re: LS7 Laguna S3

Post by driveit on Mon Mar 24, 2014 10:42 am

Awesome ride.
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Re: LS7 Laguna S3

Post by switchbiker on Mon Mar 24, 2014 8:57 pm

Sounds like it's going to be an awesome build! What size(s) of tire are you going with?
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Re: LS7 Laguna S3

Post by pila on Mon Mar 24, 2014 9:13 pm

Don't want to admit how dumb ( uninformed ! ) I am, but what size id the LS7 ? Isn't there a 5.3 and a bigger one in the LS series ?

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Re: LS7 Laguna S3

Post by dynchel on Mon Mar 24, 2014 9:18 pm

Ls7 is a 7.0 litre (427 cid) basically a corvette motor.
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Re: LS7 Laguna S3

Post by pila on Mon Mar 24, 2014 9:22 pm

OK !!! I want one ! Very Happy 

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Re: LS7 Laguna S3

Post by 77mali on Tue Mar 25, 2014 8:18 am

Nice Guna. The LS-7 is a great power plant. Welcome aboard.

Where'd you find the motor?
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Re: LS7 Laguna S3

Post by REVINKEVIN on Tue Mar 25, 2014 12:32 pm

Hey. The engine is out of a 2008 Z06 Corvette. I found it in Houston. The rear end got side swiped.

The LS7 is the all aluminum 7.0L or 427 cubic inch Z06 505 HP Corvette engine. It has an 8 quart dry sump oiling system, factory CNC ported heads, forged titanium connecting rods, titanium intake valves, forged crank, and some other little items. With the cam and spring kit I am using these engines usually put our around 560 RWHP.

Several stock Z06 Corvettes have run high 11's in the quarter at around 125mph. The top speed of the car is just over 190mph. Of course, all of this won't happen in a 4000lbs Laguna, but the addition of 4.10 gears and a Tremec T56 Magnum will help it get out of it's own way. Some Z06 owners have got 28mpg. Not so much with the Laguna, but we will see.

The tires to be used will be 295/35/17 on front and 335/35/17 rear.
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Re: LS7 Laguna S3

Post by thatfnthing on Tue Mar 25, 2014 12:35 pm

REVINKEVIN wrote:Several stock Z06 Corvettes have run high 11's in the quarter at around 125mph.  The top speed of the car is just over 190mph.  Of course, all of this won't happen in a 4000lbs Laguna...

But it sure will be fun to try! Nice score!
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Re: LS7 Laguna S3

Post by REVINKEVIN on Thu Mar 27, 2014 8:52 pm

Trust me, I will try.
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Re: LS7 Laguna S3

Post by coreys73chevelle on Fri Mar 28, 2014 1:07 am

this will be an interesting build.... like to see a 1/4 time with a factory ls7 tune. qwhat transmission you using?
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Re: LS7 Laguna S3

Post by REVINKEVIN on Fri Mar 28, 2014 10:05 am

It should be fun. It is to late for a factory tune. The cam and spring upgrade will require a custom tune. I am going to use a Tremec T56 Magnum with .410 gears. The car will more than likely come in right around 4000lbs. I would think that with a conservative 500rwhp the car might make it to 120mph in the quarter in the mid 12's. I think that would be very quick for this car, but the power will be there for that. I am really more interested in getting it in shape as a daily driver so I can use it for my business. I drive out west alot and I would like to see it just cruising across west Texas at 80mph. That is the speed limit on I-10 for 493 miles. When it is finished I am going to start early in the morning in Louisiana and drive the 880 miles of I-10 in one day. 880 miles and still just in one state. I wonder if that can be done in 11 hours???
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Re: LS7 Laguna S3

Post by JB2wheeler on Fri Mar 28, 2014 5:11 pm

Is that a 3 speed or 4 speed trans. If it's a 3 speed, it will be screaming at 80 MPH. I have a 3.42 rear gear with a T400 trans and at 60 MPH it is loud enough you can't turn on the radio. JB
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Re: LS7 Laguna S3

Post by REVINKEVIN on Fri Mar 28, 2014 5:17 pm

It is the Viper spec 6-speed manual. 700lbs/ft capacity with double overdrives. With .410 gears 80mph should be around 1800rpm.
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Re: LS7 Laguna S3

Post by JB2wheeler on Sat Mar 29, 2014 5:56 pm

Wow, that sounds great! JB
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Re: LS7 Laguna S3

Post by Trbulnc on Sat Mar 29, 2014 8:05 pm

REVINKEVIN wrote:Hey.  The engine is out of a 2008 Z06 Corvette.  I found it in Houston.  The rear end got side swiped.  

The LS7 is the all aluminum 7.0L or 427 cubic inch Z06 505 HP Corvette engine.  It has an 8 quart dry sump oiling system, factory CNC ported heads, forged titanium connecting rods, titanium intake valves, forged crank, and some other little items.  With the cam and spring kit I am using these engines usually put our around 560 RWHP.  

Several stock Z06 Corvettes have run high 11's in the quarter at around 125mph.  The top speed of the car is just over 190mph.  Of course, all of this won't happen in a 4000lbs Laguna, but the addition of 4.10 gears and a Tremec T56 Magnum will help it get out of it's own way.  Some Z06 owners have got 28mpg.  Not so much with the Laguna, but we will see.

The tires to be used will be 295/35/17 on front and 335/35/17 rear.

It's some work to put a 335/35 tire under one of these. I'm just finishing up getting it to go.

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Re: LS7 Laguna S3

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