Thread: 283 4 bolt main?
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01-01-2005 08:52 PM #1
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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
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01-01-2005 09:24 PM #2
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this is what puzzled me they have GM stamped into themLast edited by tyler; 01-01-2005 at 09:27 PM.
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01-01-2005 09:38 PM #3
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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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01-01-2005 09:44 PM #4
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Nope. The last 327s had large journals but no 4 bolt blocks.
What's the casting number?
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01-01-2005 10:01 PM #5
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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 onHonda Motor= 1.6L
Soda Bottle= 2L
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01-01-2005 10:24 PM #6
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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
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01-03-2005 08:18 PM #7
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bore
i measured the bore it is 3.97
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01-03-2005 09:48 PM #8
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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
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01-04-2005 03:09 AM #9
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wont run hot if you know what to do
trust me i have one lol..........scooter
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01-04-2005 03:32 AM #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
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01-04-2005 10:01 AM #11
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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.
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01-04-2005 11:53 AM #12
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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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