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  1. 84txk5blazer

    84txk5blazer Registered Member

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    Location:
    Harlingen, Texas
    305\'s

    can you bore and stroke a 305 out to a 400? i have had my old 305 sitting on an engine stand for about a year now, and i'm getting the urge to tinker with it /forums/images/graemlins/smile.gif
    /forums/images/graemlins/k5.gif
     
  2. CyberSniper

    CyberSniper 1/2 ton status Premium Member

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    Location:
    Chelsea, MI
    Re: 305\'s

    You can get to a 340 if you bore it .060" and stroke it to 3.75". But the cylinder walls are pretty thin at .060". Stroking it will be a pain because you'll have to balance it with the 305 crap. A 305 is aenemic anyway, make the stroke longer and it gets worse. Best to put your money somewhere else.
     
  3. ramjet gmc

    ramjet gmc CK5 Staff Staff Member Moderator GMOTM Winner

    Joined:
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    Location:
    Milltown NJ 08850 NJ sucks
    Re: 305\'s

    i think i got a nickle for my 305 at the junk yard and that was the best thing i did with it /forums/images/graemlins/rolleyes.gif
     
  4. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Location:
    Mesa , Arizona USA
    Re: 305\'s

    My 305 runs as strong as one can..........and when it starts smoking its getting replaced by a 350 or 383 /forums/images/graemlins/waytogo.gif
     
  5. lukebaby1

    lukebaby1 1/2 ton status

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    Location:
    Richmond, Virginia
    Re: 305\'s

    305's were mean't for a midsize car application. That and they make excellent boat anchors. /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif /forums/images/graemlins/doah.gif
     
  6. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    Location:
    california
    Re: 305\'s

    400ci...bahahahahahaha /forums/images/graemlins/histerical.gif /forums/images/graemlins/histerical.gif /forums/images/graemlins/wink.gif It won't even come close! You can barelly get that out of a 350 block. A 350 .060 over with a 4" stroke is 414ci and that is about as far as you could take out a 350 far as I know but still that motor would not wind up very fast nor spin lots of upper RPM's. The best way to get 400+ci out of a SBC is to use a custom merlin/dart block or find a chevy 400 block. I almost put a 4" stroke crank in my 406 which would have brought it out to 434ci /forums/images/graemlins/peace.gif but decided not to do it, I wish I would have.
     
  7. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Location:
    Mesa , Arizona USA
    Re: 305\'s

    If you WANT to tnker with, and it will cost as much as a motor that makes more power try these guys, they sell a 334 kit (.030 over)
    www.enginekit.com
    Email: powerplant@enginekits.com Mail: 931 19th Street Bakersfield, CA 93301
    Hours: Monday Thru Friday 7:30 - 5:30 Saturdays 8 - 2
    Phone: 661-861-0167
    Fax: 661-323-6394
     
  8. BlazerGuy

    BlazerGuy 3/4 ton status

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    Location:
    abcde
    Re: 305\'s

    Hey fill out your profile....where in Texas are ya??
     
  9. elacruze

    elacruze 1/2 ton status

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    Dec 23, 2003
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    Location:
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    Re: 305\'s

    A couple years back, I pulled the motor out of my '85 GMC-I ordered 350 rebuild parts, and found out it was a 305. By the time the rebuild was done, I had over $500 in it. I could have bought a running 350 for less, or rebuild a non-running one for ~$250 or so. 305 parts are so much more expensive than 350 parts that it doesn't pay-especially considering the performance difference. That 305 still runs as well as it can, but it's a weak suck motor at best. Find a junkyard 350 that isn't stuck, bore it, put in new pistons/cam/bearings and you won't regret it.
     
  10. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    california
    Re: 305\'s

    How's that 2 ton truck elacruz? /forums/images/graemlins/histerical.gif
     

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