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LS1 internals - need a little help PLEASE!!!

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Old Nov 1, 2006 | 11:40 PM
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From: St. Peters MO Sometimes you have to prove yourself by doing alot of killing or alot of dying...
Default LS1 internals - need a little help PLEASE!!!

I'm in an arguement with someone on another forum who is claiming that the Fbody LS1 is very under rated and actually performs better than vettes but GM won't make that claim because they don't want to destroy the reputation of their flagship cars...

My arguement is that while both cars were equipped with the LS1 and previously the LT1, the internal components were far superior in the vettes than the fbodies.

I need specifics to back up my arguement!!!
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Old Nov 1, 2006 | 11:56 PM
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Except for very minor differences, such as the throttle bodies, I believe the motors were virtually identical. And, the F-body is actually more efficient at laying that power down, which is why they usually (stock) dyno higher. However, the F-bodies weigh more and are not as aerodynamic. Therefore, in a straight line, on stock machines, the Vette should not have a problem, in particular as the speed rises. In the twisties, the difference becomes much more pronounced. You'd have to throw an anchor out to slow the Vette down so the F-body could keep up.
Ed
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Old Nov 2, 2006 | 12:02 AM
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The LS1 internals are identical on the F-body. Even some of the last F-bodies off the assembly line got Z06 LS6 motors. But their stock exhaust and intakes are more restrictive and they weigh 300lbs more than a Vette...
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Old Nov 2, 2006 | 01:18 AM
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I guess I'm going to lose this arguement... thanks for the help. I learned something new today
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Old Nov 2, 2006 | 02:10 AM
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Originally Posted by kwik_ta
I guess I'm going to lose this arguement... thanks for the help. I learned something new today
the only reason why they would make more rwhp is they have a solid rear axle. the engines themselves dont make more power
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Old Nov 2, 2006 | 07:48 AM
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Originally Posted by chriswtx
The LS1 internals are identical on the F-body. Even some of the last F-bodies off the assembly line got Z06 LS6 motors. But their stock exhaust and intakes are more restrictive and they weigh 300lbs more than a Vette...
From the factory or outside vendors/shops? I haven't been able to find any info that factory ever did this.
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Old Nov 2, 2006 | 08:15 AM
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Originally Posted by chriswtx
The LS1 internals are identical on the F-body. Even some of the last F-bodies off the assembly line got Z06 LS6 motors. But their stock exhaust and intakes are more restrictive and they weigh 300lbs more than a Vette...
No F-Bodies got the LS6 from the factory.

The engines are identical. Exhaust and intake differences, weight, drivetrain, and aerodynamics all play into how each respective car performs.
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Old Nov 2, 2006 | 09:40 AM
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Originally Posted by Fastbird93
No F-Bodies got the LS6 from the factory.

The engines are identical. Exhaust and intake differences, weight, drivetrain, and aerodynamics all play into how each respective car performs.
They got LS6 intakes, not the entire motor. Also the fbodies and C5 have different specs on the camshaft. Another thing that helps the vettes is they have true dual exhuast where fbodies have merged single pipe exhaust.

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Old Nov 2, 2006 | 11:09 AM
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Originally Posted by BudgetPlan1
From the factory or outside vendors/shops? I haven't been able to find any info that factory ever did this.

Yes, from the factory, some rolled of the line with 243 LS6 heads. Seen it my self, brand new car at the dealer... Search(if the search function will work) LS1Tech. there have been a few threads about it..
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Old Nov 2, 2006 | 12:14 PM
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Originally Posted by chriswtx
Yes, from the factory, some rolled of the line with 243 LS6 heads. Seen it my self, brand new car at the dealer... Search(if the search function will work) LS1Tech. there have been a few threads about it..
I've heard rumors that some rolled with the 243's, but as for being a full blown LS6 I highly doubt it.
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Old Nov 2, 2006 | 12:25 PM
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As a couple others have said; the cam shaft specs on the vette are different, the air intake and exhaust are different. The vette comes with true dual exhaust from the motor all the way back, F-bodies do not. The rest of the internals yes are the same.

I had 3 f-bodies before getting my first vette.

As far as dyno's and F-bodies being more HP than Vettes, well a dyno is just that , a dyno, real world on the street is a lot different. Yes there are f-bodies that dyno higher because of the solid axle, and less HP loss due to drivetrain set up and IRS on the vette.

Stock for stock, the vette will out run the F-body, not by a lot but it will. Remember, I said Stock for Stock.

I miss my Z!

Last edited by FrankTank; Nov 2, 2006 at 12:28 PM.
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