I just received a set of stage II LS6 heads. I'm far from an expert as to what exactly should be done.

The chambers were not polished. Should they be?

Thanks,
Bill

 

Are you talking about the combustion chamber,
or intake or exhaust runners?

<small>[ May 04, 2002, 10:29 PM: Message edited by: MechMan ]</small>

 

Hi Brian,

I was talking about the combustion chamber.

There is some pictures on this post.

link

<small>[ May 04, 2002, 11:14 PM: Message edited by: Bill00Formula ]</small>

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Bill00Formula:
<strong>Hi Brian,

I was talking about the place where the 2 valves open into.

There is some pictures on this post.

https://ls1tech.com/ubb/cgi-bin/ulti...c;f=1;t=002421</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">There are several schools of thought on this question, polished chambers have less surface area to absorb comb. heat(power) but rougher chamber finish helps combustion process by breaking up fuel as a liquid into burnable droplets when it splashes on finish in chamber. Both have there bonuses to making extra power. It will probably make similar power with unfinished chambers and you dont lose any compression when they are left untouched

 

How about posting port flow #'s for intake and exhaust? Volume figures would be very helpful also, TIA.

 

Well? t.t.t.

 

I didn't get any flow numbers. I'll see if they can send them to me on Monday.

Bill

 

What did the heads cost?

 

Terry there you go again trying to take pot shots @ MTI - just remember Raughammer is only about a 1/2 second faster then you and has you by about 3 mph!!! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> Yes what do those MTI heads cost? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

They are the standard stg II heads (2.055 and 1.60) and flow 310-315 at 0.650 and 215-220 at 0.650. I bought the heads from Pace Performance and had them shipped to MTI.

Does that sound about right?

I saw Nineball's flowed quit a bit better but he had 2.08" intake valves and they were setup for a bigger cubic inch motor.

Thanks

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">
Terry there you go again trying to take pot shots @ MTI - just remember Raughammer is only about a 1/2 second faster then you and has you by about 3 mph!!! Yes what do those MTI heads cost?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">John is quicker/faster for sure, but I doubt its because his heads are working better. What kinda hp/torque does he put down on a dyno?