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882 heads

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by lukers, Sep 22, 2000.

  1. lukers

    lukers Registered Member

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    Hello all,
    Can anyone tell me about 882 sbc heads. I have heard good (they breath well)and bad (they crack sooner than later). I want to know if I should have them redone or just start with another casting.
    Thanks
    C10+K5=K10
     
  2. Jason73K5

    Jason73K5 1/2 ton status

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    882's are all-around good heads, hadn't heard anything about them cracking. You might also want to look into some Vortec heads. You can get a set from the dealer for about $400 and they are a big improvement over most older heads. You may need a new intake manifold though.
     
  3. lukers

    lukers Registered Member

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    Thanks for the info. I wil stick with these if they check out OK.
     
  4. laketex

    laketex 3/4 ton status

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    882's are also a light casting, so they aren't as heavy duty as some heavy casting heads. What you need is the Chevy Parts Interchange Manual...most large bookstores like Hastings carry it. It will tell you what you need to know about the numbers and symbols.

    bryan

    [​IMG][​IMG]
    Durant, Ok
    '79 Blaze- 350/350/203, 14B w/detroit, D44, 4.11s, 4" susp, 36" TSL
     
  5. Casey 86K5

    Casey 86K5 1/2 ton status

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    I have built 3 small blocks- all with 882 heads on them. Never had any cracking problems with them, the only thing I dont like about them is that there is an EGR passage in the two center exhaust ports that hurts performance, they are also a very common casting. Actual casting # is 333882, all had 1.94"intake 1.50" exhaust valves and 76cc chambers. Used on 350 and 400, 400 versions have steam holes in them.

    Casey 86K5

    http://86blazer.coloradok5.com
     
  6. getsome

    getsome 1/2 ton status

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    On the engine that i'm building now the heads are 882's. I understand that they breath better but I don't know that for a fact. The engine is out of a 1976 1 ton 4 bolt main.

    Getsome
     
  7. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Maybe a dumb question, but where on the head is the casting number?

    Rene

    [​IMG]
     
  8. Andreas

    Andreas 1/2 ton status

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    Rene, pop the valve cover and look down. It´s there, in the middle so to speak, under several inches of black goo (in my case)[​IMG]

    Andreas

    406cui of pure sh*t[​IMG]
     
  9. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Thanks dude! I'll have to put my curiousity away for a while, I just got the leaks stopped![​IMG] I'll look when the valve covers start leaking again.

    Rene

    [​IMG]
     
  10. Brady

    Brady 1/2 ton status

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    These are the heads you want.They can handle porting and can take the 202 valves.They are also real common.Just have them magnafluxed to check for cracks before you put any money into them.A good machine shop can do this.Brady

    '73Beautiful Disaster
     
  11. lukers

    lukers Registered Member

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    THanks again for all the helpfil feedback. These are going to the shop for a check-up. This forum is great!!!
     
  12. lukers

    lukers Registered Member

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    Update: These heads checked OK as far as the castings (flat and no cracks.) However the cost to replace all exhaust valves and guides is more than a replacement set. I ended up getting a set of 993 heads that are supposed to be done. No guarentee on them though.
    Luke
     

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