I am starting to gather parts for my winter motor build, going heads cam and am looking for a good set of heads. A stock set of 243 is my most budget friendly option, but would be willing to spend more if there is a used set of ported heads, or aftermarket castings. Let me know what you have.
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WTB: 243/799 or other ls1 head
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243 heads came on most later 5.3 motors so they are readily available. don't pay more than $400 for a set of good ones.When in doubt, Whip it out !
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I think the 243 heads mostly came on the aluminum 5.3's (L33) if I am not mistaken? and the run of the mill iron block 5.3's mostly came with like 862 or.. 706? castings? idk I could be wrong on that stuff.
243/799 are deff a good head if you can find them cheap enough."Project Shadowfax" <- Clicky Clicky
1984 Pontiac Trans Am (15th Anniversary Edition)
L69 (High Output 5.0) / 700r4 Auto Trans

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I think the 243/799 came on a number of motors I think. The ls2, ls6, l33, and all of the 07+ 5.3 and 4.8 from what I found with a quick google. But there is also a decent demand, and a number of people think they are worth more than they are. id prefer not to have to ship them, so if I can find them local, I will buy them if the price is right.Originally posted by Jdseibe View PostI think the 243 heads mostly came on the aluminum 5.3's (L33) if I am not mistaken? and the run of the mill iron block 5.3's mostly came with like 862 or.. 706? castings? idk I could be wrong on that stuff.
243/799 are deff a good head if you can find them cheap enough.1998 Pontiac Firebird T/A, M6, LT Headers, ORY, Borlamouth, tubular LCA and Panhard bar, lowered 1.5". More to come
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oops should have probably thought out what I mean to type a little better, I was just referring to what types of 5.3's you'll mostly find them on, I know other engines ran those heads too, but your common junkyard 5.3 will most likely NOT have a 243/799 head on it, unless you are pretty lucky I think. that is one of the most common upgrades to people buying 5.3'sOriginally posted by pferris View PostI think the 243/799 came on a number of motors I think. The ls2, ls6, l33, and all of the 07+ 5.3 and 4.8 from what I found with a quick google. But there is also a decent demand, and a number of people think they are worth more than they are. id prefer not to have to ship them, so if I can find them local, I will buy them if the price is right."Project Shadowfax" <- Clicky Clicky
1984 Pontiac Trans Am (15th Anniversary Edition)
L69 (High Output 5.0) / 700r4 Auto Trans

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there's a set of low mile 243's on craigslist today. same seller has a LS6 intake too.When in doubt, Whip it out !
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