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PostSubject: BLOCK CASTING NUMBER   Sat Jan 14, 2012 6:38 pm

I thought I would check the casting numbers on my block. I found my block says 1737929 which in my search found it to be a 361 motor. The only number I could go from was 1737629 which was listed in a mopar casting number list I found online. Though my casting number has 1 digit difference could I conclude that my engine to be a 361 casted 1961-1964 as this was also the years the list showed I was going off of? Any help on this would be great
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PostSubject: Re: BLOCK CASTING NUMBER   Sat Jan 14, 2012 6:57 pm

My book says 361. Not sure on the year. Were you planning on building this motor?

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PostSubject: Re: BLOCK CASTING NUMBER   Sat Jan 14, 2012 8:36 pm

Yes I think I would like to keep it and get it rebuilt. It is running decent but I think she is getting tired. It could use a valve adjustment as I can hear some tapping so I would like to get them adjusted at least see if I can continue driving the car for awhile. I am happy to know the engine is something much larger and they did not make that block for many years.What I found was 1961-1964. Have you ever run into these block numbers in that sequence? Thanks a bunch for looking into this for me, I am excited to know this is a bigger motor, what guy wouldn't like that. cheers
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PostSubject: Re: BLOCK CASTING NUMBER   Mon Jan 16, 2012 8:34 am

If you are going to rebuild it, it might be cheaper to get a 383 or 400 and build that instead. Pistons are much cheaper than 361 pistons and you will have a lot more choice. Another bonus is that any 400 you get will have unleaded compatable heads that flow much better than any head that ever came on a 361. They also look identical and will take all the parts from your 361, so its a bolt in.

The only thing you have to watch out for is that 1961 and earlier motors have a different crank flange. If you want to use a pre-62 transmission, you need to use a pre-62 crank.
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PostSubject: Re: BLOCK CASTING NUMBER   Mon Jan 16, 2012 6:40 pm

Well that gives me something to think about. So what year of 400 block would I look for? I really was told the car had a 318, but then ended up finding out that was not the case. I really would like to find a remanufactured long block and swap all my stuff over ,but I am unsure if that is doable. Any ideas out there?
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