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maybe build a 327

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Redfrog, Sep 5, 2001.

  1. Redfrog

    Redfrog 1/2 ton status

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    I found a 327 today block,crank,rods,pistons.etc,but with no heads. I have some old 305 heads and can get some 400smblock heads. can 305 heads be put on a 327 if so what mods if any, would it be worth doing? same with the 400 heads can it be done? I know you have to have the steam holes drilled in the 400 heads anything else I should know about? TIA

    Elvis does live I seen him at Hardees
     
  2. Neil

    Neil 1/2 ton status

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    the 327 doesn't require it's heads to ahev steam holes. what is the 327 going to be used for? hard duty or alot of driving? Both 305 and 400 stock heads usually SUCK. They are light castings and overheat/warp more easily in summer and traffic. Find some 350 or 327 heads. 1 piece rear main seal 350s and '68-'69 327s are the same identical block. keep that 327 crank together with it's native block if you can. the 62-67 327s are different than 68-69 327s. keep this in mind when building. the crank main journals are a different size.

    Neil H.. Alabama.. '78 K5 400ci 4x4 AT,AC,PW Cheyenne. '74 C10 3spd/floor 250ci 4x2
     
  3. RedDwarf

    RedDwarf 1/2 ton status

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    Use the 305 heads. This will give you probably 10:1 compression, and with the small ports and 1.84 intakes it will be a very torquey mill that gets good mileage.
    I also recommend going to a longer connecting rod, though you will need special pistons for this.



    Lift It, Lock It, LIVE IT!!!
     
  4. Neil

    Neil 1/2 ton status

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    OOPS! I meant the 2 piece rear seal 350s are the same block as 68-69 327s. In 1968 & 1969 the 350 and 327 had the same 014 block castings even. If you have heads already I would go with the 305s as opposed to 400s. The 327 is one of the best engines Chevy has EVER made in my opinion. You might want some 5.7 (350)rods, RedDwarf mentioned for some added torque. Remember, before the 80s, ALL small block rods are FORGED too!

    Neil H.. Alabama.. '78 K5 400ci 4x4 AT,AC,PW Cheyenne. '74 C10 3spd/floor 250ci 4x2
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    Small journal or big journal 327 (hence the year split) The small journal ones are worse than the large journals. Again the "no replacement for displacement" cliche comes into effect. A 350 with the same parts is going to be a better truck motor than a 327.

    (not that there is anything wrong with a 327 for nostalgia, but a 350 is usually a better choice)

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</a>
    No anti-theft measures on your truck? No pity when its stolen
     
  6. Redfrog

    Redfrog 1/2 ton status

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    Thanks for the replys, I have aquired a 327 block and was thinking of putting it in a 82 long bed C-10 I bought for $150
    with a blown 305 just for a work truck (mainly for a winter project) as if I need another. I just don't want the block to go to waste it has never been rebuilt or so I was told so I thought instead of spending a lot of cash I would use what I have laying around. I have no clue what I am gonna do.only time will tell....

    Elvis does live I seen him at Hardees
     
  7. dyeager535

    dyeager535 1 ton status Premium Member

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    You should have no problem getting rid of that 327 to someone restoring a 327 Camaro, Corvette, whatever. If you don't want it to go to waste, someone restoring a vehicle will have more use for it than you. Could even ask for a 350 in trade! : )

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</a>
    No anti-theft measures on your truck? No pity when its stolen
     
  8. ben794X4

    ben794X4 Registered Member

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    I guess it all comes down to what you want to do with it. I have a steel crank 327 in an original 4X4 64 chevy suburban (the K5s' daddy) that my dad put in iun the 70s' when somebody sugared the original 6 banger. It is very cool little motor and fun to drive. I dont know if the 350 is better or not I have one in my K5 and have given alot of thought to swapin' it for the 327. I probably wont do this simply be cause I am to lazy. The real advantage logistically speaking is that no matter where you live 350s' are likely to be a dime a dozen, on the other hand just sayin 327 gets some attention. They do come from thedays of real cars afterall.

    Ben

    Subvert the accepted paradigm.
     
  9. Neil

    Neil 1/2 ton status

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    What are you gonna do with the 305 if you put the 327 in?
    That was a good point that was made..327s are from the days of REAL machines!!!What is the casting # on the 327 block and I could tell you what year it is. Also what are the fine print stamped codes on the front passengers side deck if you can still read them..they tell what vehicle the 327 is from?

    Neil H.. Alabama.. '78 K5 400ci 4x4 AT,AC,PW Cheyenne. '74 C10 3spd/floor 250ci 4x2
     
  10. Redfrog

    Redfrog 1/2 ton status

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    what am I gonna do with the 305 you ask, It is going to be a boat anchor :) It has at least three flat lobes on the cam and has a rod knocking. This thing will hardly pull itself. when I have time I will get you the numbers and have you run them for me. I've been thinking about selling it but I figured It would be easier to sell the truck with a 327 like BEN794x4 said that
    size always seems to get attention. I talked to a guy that said he had two 350 4 bolts (bare blocks) that said he would trade me even up but I already have a few of those. I figured I would wait and see when he would offer cash....

    Elvis does live I seen him at Hardees
     
  11. Neil

    Neil 1/2 ton status

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    would you sell the 305 or let me anchor my boat with it?

    Neil H.. Alabama.. '78 K5 400ci 4x4 AT,AC,PW Cheyenne. '74 C10 3spd/floor 250ci 4x2
     
  12. Redfrog

    Redfrog 1/2 ton status

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    I will let you know when I pull it out,
    It will be awhile (a couple of months)
    gotta finish the K-5 before I even touch the truck

    Elvis does live I seen him at Hardees
     

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