Savageite

I just wanted to know why does the LS6 rev to 6,500 rpm and the LS1 is only 6k. Is it because of the better vavletrain in the LS6?
<img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" />

Pro Stock John

iTrader: (34)

LS6 has better valvesprings, more camshaft, and more headflow -- makes more power and higher than a stock LS1. 2002 LS6 is like 205/217/118 that's a good sized camshaft.

Gary Z

The ’02 LS6 valves are significantly lighter. Intake valves weigh 76 grams compared to 99 grams for the LS1. Exhaust valves are 63 grams compared to 86 for the LS1.

I don’t mean to be a nit-picker but PSJ implies that a bigger camshaft helps an engine rev higher. The bigger cam typically makes peak power at higher revs but stiffer springs are needed to get there. I'm sure he knows that; I just wanted to clarify this for those who might not.

Savageite

Thanks for the replies. I geuss I was kind of right.

Lost

iTrader: (2)

The main reason is that stock LS1 springs are much too soft for higher rpm operation, leading to valve float at high rpm. Lighter valves do reduce some of the load, but they make little or no more power, but vastly increase the durability of the valve train.If I were to build a ZO6 engine I would opt for the ZO6 valves....

Dave Carney

Also, the LS6 cam will pull all the way to 6500, the LS1 cam falls off well before that.

pg318

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BLOWNGS:
<strong> How about the bottom end of the LS6, anything done to it to make it more reliable? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The LS6 gets a lighter harmonic damper and an extra balancing operation.

FACE

How about the bottom end of the LS6, anything done to it to make it more reliable?

BRacing

Here, read this: http://www.c5registry.com/2k2z06/

-Brad

Boosted LS1

I think the current LS6 has the lighter valves because they are hollow and sodium filled. Means an easier life for the valve train which has more cam lift(I think). The current engine also has teflon piston skirts as far as I am aware.

Boosted LS1

I think the current LS6 has the lighter valves because they are hollow and sodium filled. Means an easier life for the valve train which has more cam lift(I think). The current engine also has teflon piston skirts as far as I am aware.