Visual difference in 302 vs 347?

Discussion in 'Technical' started by ResidentEvilRoc, Feb 24, 2013.

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  1. junrai

    junrai Member

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    so for about $700 total investment you got a running engine with those goodies?
    THATS A DEAL
     
    junrai, Feb 25, 2013
    #16
  2. ResidentEvilRoc

    ResidentEvilRoc Got bit by the HP bug.

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    Well, actually, I only had $100 in the Marlin. LOL.


    Yeah, the main thing I wanted was the v8 for my current '73 project. Everything else that came with it is just extra stuff.
     
    ResidentEvilRoc, Feb 25, 2013
    #17
  3. baddad457

    baddad457 Member

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    You beat me to it. A Marlin 22 is about worth that...........tops. It wasn't that long ago that you could buy em new from the local Walmart for $150. You stole that car. I'm gonna have to report you.................LOLOLOLOL
     
    baddad457, Feb 25, 2013
    #18
  4. ResidentEvilRoc

    ResidentEvilRoc Got bit by the HP bug.

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    LMAO!! That cracked me up.
     
    ResidentEvilRoc, Feb 25, 2013
    #19
  5. igoback70

    igoback70 Member

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    Not sure if you bought the car yet or not, but one sure fire way to tell if its a stroker is to pull the pan and see if the inner cylinder walls have been beveled at the bottom, if that hasn't been done to the block it's not a stroker.



    Hey my motor is in that .01%, at least they appear to just be stock cast heads. ;)
     
    igoback70, Feb 25, 2013
    #20
  6. ResidentEvilRoc

    ResidentEvilRoc Got bit by the HP bug.

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    I should be able to take a plug out this weekend and do some measuring. Maybe I'll get more lucky and it be a 347.
     
    ResidentEvilRoc, Feb 25, 2013
    #21
  7. igoback70

    igoback70 Member

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    What if it has pop ups ?
     
    igoback70, Feb 25, 2013
    #22
  8. bmcdaniel

    bmcdaniel Senile Member

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    Some stroker rods that use cap screws don't need to have the cylinders clearanced.
     
    bmcdaniel, Feb 25, 2013
    #23
  9. igoback70

    igoback70 Member

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    I didnt think anyone made 7/16 cap bolts for 347, learn somethin new everyday, my bolts are 3/8 which is exactlly why i had to bevel the block and it's only a 331 set up.
     
    igoback70, Feb 25, 2013
    #24
  10. igoback70

    igoback70 Member

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    Now what if his motor has pop ups, can it throw off the measurement ?
     
    igoback70, Feb 25, 2013
    #25
  11. igoback70

    igoback70 Member

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    Sorry that was bass ackwards, the 5/16 cap bolt would be smaller correct ? Forgive me i'm a lil tired.
     
    igoback70, Feb 25, 2013
    #26
  12. baddad457

    baddad457 Member

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    No, the piston tops have nothing to do with measuring the stroke. The dome will be there at the top and bottom of the stroke. They don't disappear in between.
     
    baddad457, Feb 25, 2013
    #27
  13. igoback70

    igoback70 Member

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    I understand that, but if the top is taller than say a stock flatop, making the distance from the wrist pin to top of the piston greater on the pop up, could that not throw the measurement off ?
     
    igoback70, Feb 25, 2013
    #28
  14. Krazy Comet

    Krazy Comet Tom

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    The way it should be measured is at TDC, then again at BDC... The added length to the 1st measurement is the actual stroke, 3" for a 302, 3.4" 347 & 3.25" if it's a 331...
     
    Krazy Comet, Feb 25, 2013
    #29
  15. igoback70

    igoback70 Member

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    Basicly what im getting at is when the flat top piston is bottomed out the measurement will be greater than a pop up piston, yes or no ?
     
    igoback70, Feb 25, 2013
    #30
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