LS1 heads ?

i dont know if i need to be more specfic. what heads come on a 2000 LS1 motor?

depends on what part of 00 it was made. later 00 had 241 heads

what would have been on a 2004?

Mine came with 241.

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Originally Posted by dared2k

what would have been on a 2004?

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should be 241

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Originally Posted by Quik

depends on what part of 00 it was made. later 00 had 241 heads

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a buddy of mine is selling LS1 heads cheap, but he says they are 843 heads are they any good for my 99 silvy 5.3L? right now its completly stock but i plan on getting a cam soon. or am i better off keping my heads?

were these listed on craigslist for $50

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Originally Posted by SLO TRUCK

were these listed on craigslist for $50

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yeah. how would they work on a 5.3L?

Yes, they will fit. The 843 heads (on a LS1) have a 67cc size. The 862 heads you have now have a 61.15cc size. Throwing on those heads won't be good cause they really don't flow that much better and they will drop your CR, giving you a little more sluggish performance.

compression on 5.3 will be 8.8 and they flow the same as your stock heads. So not worth it unless you were doing boost and watned a lower SCR