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COST TO BORE ENGINE???

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by TB2Blazer, Jun 2, 2003.

  1. TB2Blazer

    TB2Blazer 1/2 ton status

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    I am planning on boring my engine over and was wondering how much should be done and also about how much it would cost.
     
  2. SUBFAN

    SUBFAN 1/2 ton status

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    Re: ENGINE QUESTION

    Why do you want to bore it again???? I'm getting the impression you are looking for more power....
     
  3. TB2Blazer

    TB2Blazer 1/2 ton status

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    Re: ENGINE QUESTION

    I'm replacing the rings and pistons and all that jazz and rebuilding the heads so I figured I might as well bore it out a little while I'm doing everything else.
     
  4. SUBFAN

    SUBFAN 1/2 ton status

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    Re: ENGINE QUESTION

    Just have it measured. If the bores aren't 'egged' or in bad shape, I would leave it be. If you decide to bore anyway, go with the smallest overbore possible. This will leave room for future rebuilds.

    Kinda depends on what you are after though.
     
  5. sled_dog

    sled_dog 1 ton status

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    Re: ENGINE QUESTION

    boring it out doesn't gain you a whole heck of a lot in the power area. Sure it helps but like was said just bore it a little bit if you have to. If not I say just hone it and file fit some rings.
     
  6. TorkDSR

    TorkDSR 1/2 ton status

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    funny how you ask a simple question...and people start asking why would you want to do that...if you wanted an opinion... would you have asked?

    sorry folks...that always drove me nuts.

    sorry i dont have a price for a machine job, guess im just as bad as everyone else.

    if you wanna go bore it out, do it.
     
  7. dyeager535

    dyeager535 1 ton status Premium Member

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    Typical cost is around $10/hole I think.

    Thicker cylinder walls are better for a daily driver, go with the smallest overbore you can. I think you can get .010 and .020 pistons for a SBC, so even if it can't clean up with a hone, at least you don't have to go real far with the overbore.
     
  8. bigmack

    bigmack 1/2 ton status

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    Yep, same here. About 10 bucks a hole.
     
  9. 75-K5

    75-K5 3/4 ton status

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    Re: ENGINE QUESTION

    [ QUOTE ]
    This will leave room for future rebuilds.


    [/ QUOTE ]

    Can't you get the walls sleeved the next time you rebuild?
     
  10. dyeager535

    dyeager535 1 ton status Premium Member

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    Re: ENGINE QUESTION

    [ QUOTE ]
    Can't you get the walls sleeved the next time you rebuild?

    [/ QUOTE ]

    Sleeving seems to be an unreliable science. It can be done, but the way I see it, trying to force an oversize sleeve into a bore that is already thin or damaged, is dangerous work.

    Not saying it shouldn't be done, but I've known people who have ruined blocks having them sleeved. It's a difficult process, not sure on the expense part. I bet it's not cheap. Probably cheaper to get a different block, at least with Chev's right now.
     
  11. Gary 86 K5

    Gary 86 K5 1/2 ton status

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    I paid $100 to have the block on my Camaro bored .030 over.
     
  12. 4DiggerDan

    4DiggerDan 1/2 ton status

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    We charge 160 for any V8 for a bore, hone, clean and remove and re-install all the plugs. At that rate we chamfer all the bolt holes bigger than 1/4-20 and chase all the threading too...

    .030" is the first oversize you'll find for a 350, .060" is the biggest you'll want to go. If you do re-ring it don't use anything but a cast ring. The proper way to hone a block is about 90% technique and craftsmanship and 10% witchcraft, black magic, and voodoo /forums/images/graemlins/grin.gif

    Oh yeah... Honing with a deck plate tacks on another 45 bucks since you've got to change stones twice as much.
     
  13. fortcollinsram

    fortcollinsram 1/2 ton status

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    mine was $11 per cylinder, including bore, hone, plateau hone, and chamfer. I had a lot of carry-over cost with my build up since I had the works done to the block...

    Chris
     

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