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Identifying Heads LSX

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Old Aug 28, 2007 | 05:38 PM
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Question Identifying Heads LSX
I just got another car. The guy let me have some heads that he had got for the car. Is there a website where I can look to see what heads they are or what they are off of? Or is there a list on here? Can't seem to find anything on them everywhere I have looked. Also which number do I check to see what they are. I found all the numbers but also not sure which one to go by.
Any help will be appreciated.

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Criss

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Old Aug 28, 2007 | 06:04 PM
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243 are LS6 heads
241 are 01-02 LS1 heads
317 are 6.0L heads
Thats not all of them but i hope it helps.
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Old Aug 28, 2007 | 06:09 PM
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853's are the 98-00 heads and te crappier of the headers, with the 243's being the best. They only came on LS6 motors though
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Old Aug 28, 2007 | 06:13 PM
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If they are 6.0L heads, would they be good to use? Not sure yet but will look at the numbers again on my lunch break.
Thanks for the help guys. I am trying to get setup to start building a little power. The car already has a D1SC, longtubes ORY and exhaust. The guy said it made 47X to the ground. But ready to up it a little.

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Criss

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Old Aug 28, 2007 | 06:24 PM
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I think 98's are 806 IIRC. I'm too lazy to run out and look right now tho.
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Old Aug 28, 2007 | 07:23 PM
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6.0 heads are good to use on forced induction motor. Just like a LS6 head just a little larger which is good for boost.
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Old Aug 29, 2007 | 03:26 AM
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They are the 317 6.0L heads. Just checked them. What size valves are in these heads. How much boost with these heads and stock bottom end?

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SBP
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Old Aug 29, 2007 | 10:16 AM
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Originally Posted by Tainted
853's are the 98-00 heads and te crappier of the headers, with the 243's being the best. They only came on LS6 motors though
My car is a 00 and it has the 241 heads on it.
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Old Aug 29, 2007 | 11:56 AM
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Originally Posted by EarlSS
My car is a 00 and it has the 241 heads on it.
Some late year 00's got 241 casting heads also.
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Old Aug 29, 2007 | 11:59 AM
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my 2000 has 241 castings too. are these better than the 853's
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Old Aug 29, 2007 | 12:01 PM
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Originally Posted by Tainted
853's are the 98-00 heads and te crappier of the headers, with the 243's being the best. They only came on LS6 motors though
not sure about the numbers, but 97-98 heads are the same, heads from 98-00 were not the same at all
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Old Aug 30, 2007 | 09:42 AM
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Originally Posted by Numba1Stunna
my 2000 has 241 castings too. are these better than the 853's
241's are supposed to be better than 853's and 806's. Something about the method of casting them that makes the finish smoother IIRC.
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