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Thread: 283 4 bolt main?
          
   
   

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  1. #1
    tyler's Avatar
    tyler is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 1973 porsche 914 283 v8 '65 Galaxie 406
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    283 4 bolt main?

     



    i just bought a 283 from a guy near my house. i paid $125 for the block and it had just been rebuilt so i got a pretty good deal. first thing i did when i got it was go to mortec and run the casting number it showed 283 2 bolt main well upon further examination i saw that my block was a 4 bolt main this puzzled me because chevy never made a 4 bolt main 283 i guess someone made it 4 bolt main but that just seems like alot of trouble to go through whats going on anybody have any idea i know what a 4 bolt main looks like im no fool and this is a 4 bolt main

  2. #2
    tyler's Avatar
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    this is what puzzled me they have GM stamped into them
    Last edited by tyler; 01-01-2005 at 09:27 PM.

  3. #3
    pro70z28's Avatar
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    Car Year, Make, Model: 70 Camaro Z-28 Now/40 Chevy Back Then
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    Did any 327's come as 4 bolt mains. They would have the 2.30" mains same as a 283.??????
    "PLAN" your life like you will live to 120.
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  4. #4
    39Deluxe's Avatar
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    Car Year, Make, Model: 59 Corvette 283/270 69 C10 Stepside 355
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    Nope. The last 327s had large journals but no 4 bolt blocks.

    What's the casting number?

  5. #5
    tyler's Avatar
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    3849852 here is the casting number i ran it on 2 web sites and they all said 2 bols main i have no clu what is going on
    Honda Motor= 1.6L
    Soda Bottle= 2L




  6. #6
    39Deluxe's Avatar
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    Car Year, Make, Model: 59 Corvette 283/270 69 C10 Stepside 355
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    It's possible and evidently likely that someone put 350 4 bolt center caps on that block and had it align bored to large journal. Have you measured the bore yet?

    I'm wondering if this was someones hot dog 302 project at one time.

    Tom

  7. #7
    tyler's Avatar
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    bore

     



    i measured the bore it is 3.97

  8. #8
    39Deluxe's Avatar
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    Looks like I was right about the 301 project if the stroke is 3". You have a pretty cool piece there.

    Tom

  9. #9
    gassersrule_196's Avatar
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    Car Year, Make, Model: 65 corvair corsa
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    wont run hot if you know what to do trust me i have one lol..........scooter

  10. #10
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    pay attention more

     



    maybe you should pay attention more for about the millionth time here i go. griffin allum. radiator electric fan <tho seldomely used> flex flan and isntead of a thermostat i took a washer and stuck int here for limited but constant flow now i cant get it to heat up!. will run 180-190 degrees all day long in the summer in traffic. it all works..............scooter

  11. #11
    rat_rod35's Avatar
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    I agree with gasser. I usually always have over bored motors with no problems. I use be cool radiators and electric fans.
    I can't afford billet.



  12. #12
    tyler's Avatar
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    the motor is going in a 73 porsche 914 it already has a griffen radiator and cooled fine with my 327 that i had just fine so i feel i can cool the motor fine

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