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Thread: 307 / 350 question
          
   
   

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  1. 01-26-2005 09:35 AM #1
    40roadking's Avatar
    40roadking
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    307 / 350 question

     



    Morning, a friend of mine asked me to help him restore his 71 chevelle, essentially the bodywork, wiring, interior, etc, and I gladly accepted. No big problems there. We were talking yesterday about the engine, and here is where I have a question. It currently has a stock 307 w/ 2BBl carb. He wanted to know about 1) getting a 4BBL intake and carb or 2) (his preference) putting in a 350. I haven't done a swap in a while, and never on someone else's car, and I was hoping for a little advice. Am I correct in believeing that the 350 would be a basic bolt in for this car ? Last engine swap I did was on my asphalt modified. Appreciate input.If it were my car, I'd do it, but since it's someone else's, I don't want to get his hopes up to high without being certain, especially since I am just a hobbiest.
    Thanks

    Matt

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  3. 01-26-2005 09:42 AM #2
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    The 350 into a 307 car is a direct bolt in.. Should be no problems (other the normal skinned knuckles, etc).
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  4. 01-26-2005 09:48 AM #3
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    Thanks Bob. Skinned knuckles and greasy fingers make it fun !

    Matt
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  5. 01-26-2005 10:13 AM #4
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    If he doesn't want to go to to much expense and the 307 is any good ,you can put a small cam like a edelbrock performer,timing set and a performer intake( or something like it) a600cfm or smaller carb and a set of small tube headers . You will notice a vast improvment.
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  6. 01-26-2005 10:19 AM #5
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    That is a setup I had kicked around, but he was hoping to do the 350, he has one available to him at a fair price. I'll toss that idea to him as well, or mention that those mods to the 307 could reduce his overall investment.
    Thanks.
    Matt
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  7. 01-26-2005 06:20 PM #6
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    307 have same stroke as 327 you can bore 307 to 4" and make a 327 or put in 350 crank and make a 350 out of the 307 nice thing about this is you now have a standard bore 4" block the casting is the same just smaller bore gm did this for cost saving less molds for same block style
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  8. 05-05-2005 01:37 PM #7
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    Thumbs down 307 bored .125 over

     



    I did this and had terrible heating issues and the first cold spell we had and i had antifreeze in it.... CRACKED... start over....
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  9. 05-05-2005 01:41 PM #8
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    Looking for a new 307 block

     



    Hey if your friend decides to go with the 350. shout at me i would love to get the 307 mine is dead...

    I am on yahoo messenger as vccr01 or email me at vccr01@yahoo.com.

    Thanks, and I would like to hear from anyone that has a 283 or 307 block...

    David
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  10. 05-05-2005 04:17 PM #9
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    ill take the 283's


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    Last edited by gassersrule_196; 05-05-2005 at 04:19 PM.
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