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So learn me on big block heads...

Discussion in 'The Garage' started by Zeus33rd, Mar 15, 2006.

  1. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Just looked up the heads on my 454 today-

    14092360...86-90...oval...OPEN...454 Truck, "peanut" round ports

    So what does all this mean? The oval port, open chamber part I think I understand...But what does "peanut ports" mean? Are these good heads or so-so heads? I realize they aren't performance/hotrod heads, but I'd still like to know what I've got. :)
     
  2. ryan22re

    ryan22re 1/2 ton status

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    the peanut heads are the red headed stepchild of bbc heads.

    i wouldnt intentionally seek them out, but if i had them in good shape id run them. just make sure you have an intake specifically for the peanut heads. most marine engines run them for low rpm torque. peanut ports are smaller even than oval ports, and would be fine for your tow rig.
     
  3. k20

    k20 3/4 ton status

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    Those heads are ok for torque, aint gonna have much power over 4500 though. Heads are divided into Rectangle, Oval, and peanut, peanut are basically just small ovals. Like, really small ovals. They are about half the size of my 049s (ovals) after I did a little porting on my 049s.
     
  4. tarussell

    tarussell 1/2 ton status

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    The "peanut port" heads are very low RPM range heads.
    They came in some T/D motors for truck applications and in C/K/R/V trucks too. They give a BBC a power band similar to a diesel engine . Lots of low end grunt but at the exspense of any kind of power over 3,800 RPM's ( actually these heads fall off a little before 3,800 RPM's ).
    These heads are great for towing and motor home applications but not much else . I am not saying that they are a bad design but I am saying that they were meant for a specific RPM range and not much else.

    Tom
     
  5. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    So, in other words, they suck shiit? :haha:
     
  6. ryoken

    ryoken Puppy Fabricator Premium Member GMOTM Winner

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    the peanuts are very, very common in the marine industry.. see them quite a bit...

    for a low rpm trail rig, they'd be decent i suppose...
     
  7. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    peanut port heads are perfect for a low end torque engine, they don't make any HP but torque is what you're after anyways.
     
  8. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    I was hoping you'd reply to this thread. :)


    Anyways, the truck is a dd with a 465 trans....No speed shifting goin on, so hp isn't really gonna do me much good.


    So, since I have these heads, What should I be lookin at as far as cam specs?
     
  9. ryan22re

    ryan22re 1/2 ton status

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    something small
     
  10. stevos67k20

    stevos67k20 1/2 ton status

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    Comp cams makes a retro-fit (or not) hyd roller cam that has 206*/212* duration. The same cam (although not retrofit) is used on sallee chevrolet's extreme4x4 454 engine making over 400 ft/lb at somthing like 1300 rpms. that engine uses a late model block (gen 6 i believe), 4 bolt main. i don know what you have but those numbers look pretty good to me. heres i link i hope it works http://www.sallee-chevrolet.com/frame.html?/ChevyBigBlockV8s/454_xtreme_4x4.html

    "this engine has peanut style high torque heads" thats what they wrote(on the site)
     
  11. thatK30guy

    thatK30guy 1 ton status Premium Member

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    How much for the Sallee motor?
     
  12. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    This is what I have as far as a block-

    14015445...454.......78-90...2 or 4 bolt

    It does happen to be a 4 bolt. :D It actually started out as the Goodwrench 454. Same as what Sallee started with except mine is Gen 4.

    This is the cam kit I'm considering-
    http://store.summitracing.com/defau...eywordSearch&DDS=1&N=115&target=egnsearch.asp

    The least aggressive of the Extreme 4x4 line.

    I would think that that cam, along with an Edelbrock 2161 manifold and an Edelbrock Q-jet would make a good torquey motor. Thoughts?
     
  13. ryan22re

    ryan22re 1/2 ton status

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    yep, the high lift/low duration of that cam looks good to me.

    may have to check valvesprings and or piston/valve clearance, just to be sure.
     
  14. 1985_K5_Silverado

    1985_K5_Silverado 1/2 ton status

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    $4,850 (search their site for SC454X ).
     
  15. stevos67k20

    stevos67k20 1/2 ton status

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    hey thats not bad at all. i never did find a price for that engine.thanks

    KidJethro: sounds like your good to go! good luck.
     

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