SS00Blue

Question:

I've got a set of LQ9s. I know this because they have the LS6 D-shaped port. Problem is that the casting number equates to the LQ4 aluminum head.

What's up with that? As I said, it's not the standard LS1 exhaust port. It's identical to the Z06, LS6 exhaust port.

Can anyone shed some light, or better yet confirm this?

Thanks.

SC-

bfongC5

what is the casting number?

SS00Blue

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by bfongC5:
<strong> what is the casting number? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">317

ZYA_LTR

your 317's are the LQ4 heads, they are the lower performance version of the 6.0 liter heads, they came on all the regular 6.0 liter trucks, the LQ9's are the ones that came on the '02+ escalades and denalis, they have a smaller combustion chamber than the LQ4's. Gm says that the LQ9 heads are essentially the same as the LS6's, but with a larger combustion chamber.

SS00Blue

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ZYA_LTR:
<strong> your 317's are the LQ4 heads, they are the lower performance version of the 6.0 liter heads, they came on all the regular 6.0 liter trucks, the LQ9's are the ones that came on the '02+ escalades and denalis, they have a smaller combustion chamber than the LQ4's. Gm says that the LQ9 heads are essentially the same as the LS6's, but with a larger combustion chamber. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks.

Question:

From where does your information come. I've got a source that sells these heads to TEA. He says they're the heads that come on the 6.0L Escalades (ie - LQ9).

SC-

White_Hawk

iTrader: (3)

The latest issue of GM Hi-Tech performance has an LS1 head guide in it. Check it out. It has all the specs you need, too.

-Geoff

SS00Blue

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by White_Hawk:
<strong> The latest issue of GM Hi-Tech performance has an LS1 head guide in it. Check it out. It has all the specs you need, too.

-Geoff </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yeah. I've got it, but I don't trust them. I've caught so many errors in that mag that I've stopped trusting them for any REAL tech information.

ValveGod (SMC) says he hasn't seen any other castings on the 6.0L other than the 317s. These are the ones that TEA uses for their FI apps.

I guess these will have to do for me.

SC-

<small>[ March 19, 2003, 04:51 AM: Message edited by: SS00Blue ]</small>

gto_70

SS00Blue could you get me in touch with your source for the LQ4 heads? I'm doing a LS1 conversion into a '81 Malibu and I will be using a supercharger, so I am looking for a set of the aluminum 6.0 truck heads. Can you help?
Thanks,
Steve

MelloYellow

What is a good price for LQ9 heads?

Where is a good place to buy them?

frcefed98

iTrader: (16)

Mello you can get them from valvegod@aol.com or Formulation(dave) he is on the classified board a lot and has a post up there now. I bought my 6.0 heads(317 casting) from Formulation for 450.
Hope this helps <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
J

ZYA_LTR

Ok, i would like to retract my prior statement, as i was going off of GMHTP sayso in the mag, and being that i too just spoke to Shaun @ SMC(VALVEGOD) i will agree that all aluminum 6.0 heads are created equal, with certain inalienable rights to be the same and perform awesomely in all F/I applications.

Seriously, i am local to shaun, and he was at our shop a couple of days ago, and we actually spoke on this subject, and he agreed that they are all the same, and GMHTP is incorrect, there are no differences, so keep the ones you got, and have them done, i would think that shaun knows his Gen3 stuff, that's all he sells, sorry for the confusion, but know i am for sure, after talking to shaun, that, and our head guy said that he has had sets of both casting's and stock, they flow damn near the same, the only differences are allowable tolerance between casting shift.

SS00Blue

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ZYA_LTR:
<strong>Seriously, i am local to shaun, and he was at our shop a couple of days ago, and we actually spoke on this subject, and he agreed that they are all the same, and GMHTP is incorrect, there are no differences, so keep the ones you got, and have them done, i would think that shaun knows his Gen3 stuff, that's all he sells, sorry for the confusion, but know i am for sure, after talking to shaun, that, and our head guy said that he has had sets of both casting's and stock, they flow damn near the same, the only differences are allowable tolerance between casting shift. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yeah, Shaun is the one from whom I got the 317s. I posted, NOT because I don't believe Shaun is right, but because I was hoping for confirmation as to what I already suspected, which is:

The 317 head is the only head available, and with the LS6 exhaust port, which is OBVIOUSLY cast into it, the head probably wears the same casting number on it.

After all, GM has been known to cast up a revised part, and forgotted to change the numbers in the tooling. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

Thanks all,

SC-

<small>[ March 19, 2003, 04:53 AM: Message edited by: SS00Blue ]</small>