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Thread: 243 heads.

  1. #1
    Member 2K2SLPSS's Avatar
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    243 heads.

    Is 400$ a good price on a set of used #243 heads? They came off a LS2 GTO with 38k on the clock.

    Also are the 243 heads off a 5.3 the same as the 6.0?

    And lastly should i buy them this weekend?

  2. #2
    Just a slow Camaro KING Z28 HAWK's Avatar
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    $400 is a good price! As far as them being the same as the newer ones coming off of 5.3's im not sure. Yes they will probably be gone before you know it.

  3. #3
    Junior Member incbed's Avatar
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    Quote Originally Posted by 2K2SLPSS View Post
    Is 400$ a good price on a set of used #243 heads? They came off a LS2 GTO with 38k on the clock.

    Also are the 243 heads off a 5.3 the same as the 6.0?

    And lastly should i buy them this weekend?
    to be honest it doesn't matter what engine the heads came off of 243's are 243's..The LS6 243 heads have the lighter sodium filled valves and the stronger yellow valve springs,,other than that they all supposedly have the same combustion chambers and flow.


    hope I have helped.

  4. #4
    Member 2K2SLPSS's Avatar
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    bought the heads today. talked him down to 350, came with valve covers and fully assembled. most likely going to get them checked out, ported, and polished; and i would like to replace the internal parts as well. so i can just slip a cam in when i would like to. over all i bit the bullet for the heads and the camaro has a bunch of new parts for this summer. its going to be a new nature of the beast.

  5. #5
    11 years of bangin gears cammed goat's Avatar
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    Good deal.

  6. #6
    Just a slow Camaro KING Z28 HAWK's Avatar
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    $350 great deal! Wish I could find a set for that cheap

  7. #7
    Member youngrigo's Avatar
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    Good deal... Pick them up!

  8. #8
    Member 2K2SLPSS's Avatar
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    well i got the heads and have some time to do work on them. i know im going to have them gone through, and maybe a port and polish. i was shopping for some valve train componets and it looks like ill be spending more on the valve train then i did the heads. what does anybody recommend?? i would like to find a kit, but all are spendy.

  9. #9
    TunedbyFrost.com Tuner Frost's Avatar
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    Quote Originally Posted by 2K2SLPSS View Post
    well i got the heads and have some time to do work on them. i know im going to have them gone through, and maybe a port and polish. i was shopping for some valve train componets and it looks like ill be spending more on the valve train then i did the heads. what does anybody recommend?? i would like to find a kit, but all are spendy.
    get the patriot duals or extreme duals... you get the double springs, seats, titanium retainers and locks as well as stem seals for like $260. Low price for high quality parts.

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    Great deal man! I just bought a set for $400. Picking up my 00 Z28 this weekend. Will be nice to be back into another F-Body. This time I think it will have a little more punch though.

    Glad to see someone else get a good deal on a set though.

    Thanks Frost for the info on the springs I was wondering the same thing!!!

  11. #11
    Senior Member redbird555's Avatar
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    Quote Originally Posted by KING Z28 HAWK View Post
    $350 great deal! Wish I could find a set for that cheap
    Lol you can I just sold my 799 heads for that price. People pay a little less for them because they dont have 243 stamped on them but they are the SAME casting just made at a different plant. Some ls2's even have come with one 243 head and one 799 head.

  12. #12
    Something Diabolical... chuckie669's Avatar
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    Go check eBay. They're out there. Sry, mobile eBay
    http://item.mobileweb.ebay.com/viewi...id=16664794971

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    ^^^ man that's a good deal!

  14. #14
    Member 2K2SLPSS's Avatar
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    thanks frost, i most likely go with one of the sets you have suggested. now only if i could find a machine shop with a lsx head porting program....

  15. #15
    TunedbyFrost.com Tuner Frost's Avatar
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    Quote Originally Posted by 2K2SLPSS View Post
    thanks frost, i most likely go with one of the sets you have suggested. now only if i could find a machine shop with a lsx head porting program....

    Total Engine Airflow (TEA)
    Advanced Induction (AI)


    Both are good companies with good porting programs.

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    what is the difference between the 243's and the 241's? i picked up a set of 241's off 6.0 GTO for $110. worth the deal?

  17. #17
    I don't sell out! blackSS01's Avatar
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    Quote Originally Posted by mbmta99 View Post
    what is the difference between the 243's and the 241's? i picked up a set of 241's off 6.0 GTO for $110. worth the deal?
    243's have better flow on the intake and exhaust side of things. 243's also have a slightly smaller combustion chamber 64.47CC compared to the 241's 67CC chamber. This ups compression and adds power. If the 243 head is off of a Z06 and has yellow valve springs then it will have lightweight valves which drop valve train weight. 243 heads are better in every aspect then the 241 heads but 241 heads are not junk either. They are a good head.
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    medium blue metallic
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    thanks for the help...also any certain things i need to address with a cam swap....looking at a 231/239 .617/.624 113 LSA?

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    Quote Originally Posted by mbmta99 View Post
    what is the difference between the 243's and the 241's? i picked up a set of 241's off 6.0 GTO for $110. worth the deal?
    241's came on the 04 GTO, 05 & 06 GTO's came with the 243's. Still at good price at $100.00 !

  20. #20
    Member Camaro69Mac's Avatar
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    Quote Originally Posted by Big Chevy View Post
    241's came on the 04 GTO, 05 & 06 GTO's came with the 243's. Still at good price at $100.00 !
    So i have a 99 SS what are the heads on my LS1?? Theres a set of 241's on craigslist near my town for 200. would that be worth the price and an upgrade for my car? I'm doing the cam this month also

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