:nutz: Whats the difference between the LQ9 and LQ4:nutz:

[RedHeartbeat]

There are two books you can buy on Amazon.com that will be very beneficial for you to read or have for research. The first is How to build high-performance Chevy LS1/LS6 V-8s by Will Hanzel. The other is Chevy LS1/LS6 Performance: High Performance Modifications for Street and Racing
by Chris Endres. You can get both for $26.76 on Amazon.com.

[Zick]

Here is some good reading for you and your friend.
http://www.automotiverebuilder.com/ar/eb040538.htm
The only misprint I saw in there was that it says all 6.0 had flat top pistons. This is not true, the LQ4 have a slight dish to them while the LQ9 are completly flat. I have seen this with my own eyes.

LQ9 have beefier rods and flat top pistons with moly coating on the skirts and thermal barrier on the top.

Everything thing else is the same.

[samills]

Remember you are also losing more power through the 4l80 trans than the 4l65. I think its 5 to 10 percent more. This would also cause you to get worse fuel milage.

[Lethalyoyo]

<div class='quotetop'>QUOTE(Zick &#064; Jun 29 2006, 10&#58;27 AM) [snapback]56637[/snapback]</div>

Here is some good reading for you and your friend.
http://www.automotiverebuilder.com/ar/eb040538.htm
The only misprint I saw in there was that it says all 6.0 had flat top pistons. This is not true, the LQ4 have a slight dish to them while the LQ9 are completly flat. I have seen this with my own eyes.

LQ9 have beefier rods and flat top pistons with moly coating on the skirts and thermal barrier on the top.

Everything thing else is the same.
[/b]

thanks for looking that up but mine is a 2006 not a 05 thats all that it talked about

[Zick]

<div class='quotetop'>QUOTE(Lethalyoyo &#064; Jun 29 2006, 08&#58;43 PM) [snapback]56763[/snapback]</div>

thanks for looking that up but mine is a 2006 not a 05 thats all that it talked about
[/b]

Doesn&#39;t matter, AFAIK they didn&#39;t make any changes from 05&#39; to 06&#39;

[hummertech]

<div class='quotetop'>QUOTE(Zick &#064; Jun 29 2006, 08&#58;58 PM) [snapback]56783[/snapback]</div>

Doesn&#39;t matter, AFAIK they didn&#39;t make any changes from 05&#39; to 06&#39;
[/b]

i&#39;ll give you untill sun night

[Zick]

Some of that stuff listed is not new starting in 06&#39;. IE: My 05&#39; LQ9 uses the all the same length M11 bolts as well. It utilizes the use of metric bolts. All LQ9 had floating wrist pins.
Now I have no idea on the measurements part but I don&#39;t see any significant differences.

[hummertech]

[quote]


Changes may include 1 or more of the following items:
all 6.0 get floating rods now

[Zick]

What is a floating rod?

I was actually referring to this;

• All applications use full-floating design piston pins.

[RedHeartbeat]

A full floating rod means that the piston pin isn&#39;t pressed into the small end of the piston, it slides through freely and rides on a bushing instead. The older GenIII engines have the piston pin pressed into the rod and the piston acts as the bearing for the small end of the rod. The full floating piston pin requires snap rings or wire ring groove cut in the piston pin bores to retain the rod pin. If there are machining problems when cutting the groove, pins have been known to walk out the bore and gouge the cylinder wall. That is a very rare thing to happen, though.