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882 Chevy heads?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Itali83, Oct 24, 2001.

  1. Itali83

    Itali83 1/2 ton status

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    Will chevy 882 heads bolt up to my 87 TBI motor?? Coolant passages the same, intake and block bolt pattern the same? Thanks for help!
    Ben 87 Jimmy
     
  2. xnoahx

    xnoahx 1/2 ton status

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    I could be wrong but i think the intake wont bolt up right. I think the bolts go in at a different angle.

    My 73 K5 <a target="_blank" href=http://www.geocities.com/xk5blazerx/73k5.htm>http://www.geocities.com/xk5blazerx/73k5.htm</a> 350/TH350/NP203, Q-jet, Edelbrock intake, Vortec heads, 4" lift, and 36" TSL's
     
  3. Itali83

    Itali83 1/2 ton status

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    Thanks, anyone else??
    Ben 87 Jimmy
     
  4. zakk

    zakk 1/2 ton status

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    i concour with xnoahx. I know with FI swaps you can hog out the intake bolt holes in question going onto pre-86 heads but i am not sure if '87+ manifolds fit on pre-86 heads.

    -Zakk
    '77 K5 SB 400 TH350 NP203 p/t 6" Lift D60 14BFF 4.10's 36"Wrangler II's

    [​IMG] CK5's MOAB 2002 OR BUST!! [​IMG]
     
  5. Dip Stick

    Dip Stick Registered Member

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    I think they didn't change the heads until the new body style in 88. So I think they will bolt up. But you don't want the 882 heads. They got small exhuast ports and take forever to port out (Trust me [​IMG]) If I could find my old Fourwheel &amp; Offroad I would find the heads you want....i think its like 024. They have a smaller cc and the runners are bigger.

    <font color=red> It's not what you drive, it's how you drive it</font color=red>
    1986 K20 & Lots of Rust
     
  6. Itali83

    Itali83 1/2 ton status

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    Well, my friend has a pair that he would sell to me for 200 bucks. Here are the specs. 882 heads. 1.94 intake. 1.50 exhaust. He did some at home porting, he said that he ported out the valve runners, or whatever you want to call them, so they don't get really small right after the valve, the bowl area, the acual intake ports and where the valve guides are. he has had the valves refaced. New valve seals, springs retainers. I was thinking of having them decked to get the chambers down to 65 or 63 cc so I can get some compression out of them. Tell me if these heads are worth my time, and the 200 bucks. I know that they will make more power than my stockers, and I don't really have the 550 for new vortecs. Thanks again.
    Ben 87 Jimmy
     
  7. HarryH3

    HarryH3 1 ton status Author

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    You can get the Vortec heads brand new for under $450 at <a target="_blank" href=http://www.sdpc2000.com/cart.asp?action=catalog_start&amp;catid=277>http://www.sdpc2000.com/cart.asp?action=catalog_start&amp;catid=277</a>. Of course, then you also have to buy a new intake manifold that will bolt to them. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <a target="_blank" href=http://www.angelfire.com/super/ThunderTruck>www.angelfire.com/super/ThunderTruck</a>
    It's a great day to be alive...
     
  8. RedDwarf

    RedDwarf 1/2 ton status

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    882 heads are crap. They are just about the least desirable heads you can get...unless you get Phords...

    They are not worth 200 bucks IMHO

    Still Poundin' "pavment" after all these years!!! [​IMG]
     
  9. Blazer1970

    Blazer1970 1/2 ton status

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    From "Chevrolet Small-Block V-8 ID Guide".

    "In 1974, when GM was forced to produce engines that would run on unleaded fuel, many changes were made to the cylinder heads. The addition of and extra heat crossover port on the center exhaust port and the redesigned exhaust port did reduce emissions and raised the operating temperature. GM also began flame-hardening the exhaust seats to keep them from eroding under the new unleaded fuel conditions. On top of that, GM went on a lightening binge. All the changes contributed to a rash of cracking cylinder heads. Cracks usually formed around the exhaust seats of the center cylinder. The new exhaust port configuration did not improve flow. The most common casting you will find is the 882 for the 350 ci engine and the 454 for the 305 ci engine. These castings have a strangely cast area under the intake ports which make them very easy to spot. These castings have a 76cc chamber."

    Tim

    70 Blazer CST 4X4 350 SM465 NP205
    87 Burb 4X4 350
    01 GMC 2500HD 4X4 Duramax/Allison
     
  10. CaptCrunch

    CaptCrunch 1/2 ton status

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    I agree they suck... plus you can get them for cheaper then 200 bucks. I'm not real up to date on what you can swap on for the TBI that will bolt right up or stock heads in general for that matter, but I thought I heard the TPI and the TBI heads can be swapped and either manifold will bolt right on to the the other? Anyone know for sure? If so a swap to a TPI head would be a decently cheap upgrade probably... that or just say the heck w/ it and go TBI HP heads from GM Perf Parts or some Edelbrocks [​IMG]

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://coloradok5.com/gallery/captcrunch>http://coloradok5.com/gallery/captcrunch</a>
     
  11. laketex

    laketex 3/4 ton status

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    find a new friend. They're light casting and they crack easily...I know from experience.

    Sherman, Tx
    <font color=red>The blazer's almost on the road....anyone got tree fiddy?</font color=red>
     
  12. 1bad82k5

    1bad82k5 1/2 ton status

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    I agree, the 882 heads suck. My main problem with them is the light casting. Look for a set of 093's. These are what chevy puts on the goodwrench engines. They are the heaviest casting ever produced. I, however, am going to get the vortec heads. I don't think you can beat them for the money. Just my thoughts.
    eric

    Don't get me started, you know how i get.
    82k5, 14bff, d44, sm465, np205, 300hp350, rust
     
  13. Itali83

    Itali83 1/2 ton status

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    Looks liek I'm going with vortecs. I was hoping these heads would be the next best thing but I guess they aren't. I'll save up some pennies over the winter and go all out. maybe even buy a used short block and rebuild it myself. I don't know. THANKS SO MUCH for all of your help!!
    Ben 87 Jimmy
     
  14. Andreas

    Andreas 1/2 ton status

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    882´s aren´t THAT bad [​IMG] 624´s are worse. Found on early 80´s 350 engines I believe.

    The 882´s flow better than a lot of other 70´s castings. I wouldn´t pay $200 though.

    Andreas

    406cui of pure sh*t[​IMG]
     
  15. FWP

    FWP CRS

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    It's kind of funny, I just got back from dropping off a set of 882 heads at my machinists for re work. I was asking him about them, (He's a race engine builder), and I guess there's 5 different versions of 882 heads. The ones I had were a heavy set, with good flow. I wasn't sure if they would work for what we're doing (increasing valve size, cam etc.), but he assured me they will be fine.

    <a target="_blank" href=http://coloradok5.com/gallery/75K5>http://coloradok5.com/gallery/75K5</a>
     
  16. MRBIGBLOCK

    MRBIGBLOCK 1/2 ton status

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    any 822 head is crap unless ya need a boat anchor. then they are the bomb. dude it looks like ya need another machine shop to do your work,because this head is worth less than nothing!!!! and maybe he is a phord guy?
     
  17. Blazer1970

    Blazer1970 1/2 ton status

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    Actually, there are different 882 castings.

    333882 was used on '70 - '76 in both 350 and 400 versions. The 350 version has a 76cc chamber, and the 400 has an 80cc chamber.

    3238882 was a '68 - '69 350 head. These would definitely be a heavy casting.

    3932882 is a '76 only 400 head.

    Tim

    70 Blazer CST 4X4 350 SM465 NP205
    87 Burb 4X4 350
    01 GMC 2500HD 4X4 Duramax/Allison
     
  18. FWP

    FWP CRS

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    Hey Tim, Where did you get that information? I'm curious......

    <a target="_blank" href=http://coloradok5.com/gallery/75K5>http://coloradok5.com/gallery/75K5</a>
     
  19. Blazer1970

    Blazer1970 1/2 ton status

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    Info comes from "Chevrolet Small-Block V-8 ID Guide" by Pierre Lafontaine. Available through Amazon, Barnes &amp; Noble, etc.

    Tim

    70 Blazer CST 4X4 350 SM465 NP205
    87 Burb 4X4 350
    01 GMC 2500HD 4X4 Duramax/Allison
     

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