Author Topic: 360 block and head casting number quetions? Update ??'s  (Read 3348 times)

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Offline Ram

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360 block and head casting number quetions? Update ??'s
« on: July 17, 2004, 04:24:42 PM »
When you look at the block casting and see the number:

4006830 360  3

What does that segment behind that "360" translate to for a (1) a (2) or a (3)?

Additionally what is the straight skinny on the first seven digits (4006830) of the number? I have found several years of production on various searchs and it has came up with everything from 74-79, 76-80 and 76-89!
That number above it what is on the engine!

Please don't ask me what the head numbers are yet, I don't have it in hand right now.
« Last Edit: July 29, 2004, 09:11:52 PM by Ram »
1986 Dodge Ramcharger Royal SE 4x4, 360 auto

Offline sheriff

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Re:360 block casting number quetion?
« Reply #1 on: July 18, 2004, 03:09:26 PM »
hi ram, from what i have been able to find out about the different casting #'s is the seven digit # assigned to a block to later id that particular casting. i don't think that each of the seven by themselves mean anything. the (360) of course is the engine cid. the following #, is a revision level for that particular casting. (some small change that did not require a complete  new casting). i am more familuar w/bb mopar than sb. i have seen bb casting w/up to 12 revisions on 1 casting #. stamped numbers on the block or desigations in the vin# will indicate the engine as built. the casting date should be cast on the block also. block casting #'s w/revisions may span a number of model years and overlap other casting.  numbers.hope this helps clear up some q"s --sheriff--
1967 r/t -- owned since new -- completely stock --58k "asleep-not dead"
1988 d150 -- 500" mag- MSII-SEQ port fi - eagle stroker-srp pistons-comp hyd roller cam/lifters/roc/gm coil paks "R/T-rapid transit"
1979 red exp-rescued-by barn
he/she who wastes time picking fly-shit out of  pepper will be left in the dust.
 pics - clk on gree

Offline Ram

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Re:360 block casting number quetion?
« Reply #2 on: July 18, 2004, 05:55:34 PM »

hi ram, from what i have been able to find out about the different casting #'s is the seven digit # assigned to a block to later id that particular casting. i don't think that each of the seven by themselves mean anything. the (360) of course is the engine cid. the following #, is a revision level for that particular casting. (some small change that did not require a complete  new casting). i am more familuar w/bb mopar than sb. i have seen bb casting w/up to 12 revisions on 1 casting #. stamped numbers on the block or desigations in the vin# will indicate the engine as built. the casting date should be cast on the block also. block casting #'s w/revisions may span a number of model years and overlap other casting.  numbers.hope this helps clear up some q"s --sheriff--


I'm pretty much onboard with everything that your saying, I'm thinking that the last digit, that revision jobber, I seem to remember some place, someone said that the number can indicate a police intercepter engine.  Or that its the quality of casting, so I'm remembering from someplace. I just can't reference it and which number it is. (2) or (3) or what?
Thanks
1986 Dodge Ramcharger Royal SE 4x4, 360 auto

Offline sheriff

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Re:360 block casting number quetion?
« Reply #3 on: July 18, 2004, 06:09:46 PM »


hi ram, from what i have been able to find out about the different casting #'s is the seven digit # assigned to a block to later id that particular casting. i don't think that each of the seven by themselves mean anything. the (360) of course is the engine cid. the following #, is a revision level for that particular casting. (some small change that did not require a complete  new casting). i am more familuar w/bb mopar than sb. i have seen bb casting w/up to 12 revisions on 1 casting #. stamped numbers on the block or desigations in the vin# will indicate the engine as built. the casting date should be cast on the block also. block casting #'s w/revisions may span a number of model years and overlap other casting.  numbers.hope this helps clear up some q"s --sheriff--


I'm pretty much onboard with everything that your saying, I'm thinking that the last digit, that revision jobber, I seem to remember some place, someone said that the number can indicate a police intercepter engine.  Or that its the quality of casting, so I'm remembering from someplace. I just can't reference it and which number it is. (2) or (3) or what?
Thanks
nothing that is cast on the block has anything to do with what an engine turns out to be. that info would be stamped on the id pad of the block or indicated with info as part of the vin# and not cast into the block. at the time of casting no one knows what will be the nature of the finished engine. --sheriff--
1967 r/t -- owned since new -- completely stock --58k "asleep-not dead"
1988 d150 -- 500" mag- MSII-SEQ port fi - eagle stroker-srp pistons-comp hyd roller cam/lifters/roc/gm coil paks "R/T-rapid transit"
1979 red exp-rescued-by barn
he/she who wastes time picking fly-shit out of  pepper will be left in the dust.
 pics - clk on gree

Offline Ram

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Re:360 block casting number quetion?
« Reply #4 on: July 18, 2004, 06:33:36 PM »



hi ram, from what i have been able to find out about the different casting #'s is the seven digit # assigned to a block to later id that particular casting. i don't think that each of the seven by themselves mean anything. the (360) of course is the engine cid. the following #, is a revision level for that particular casting. (some small change that did not require a complete  new casting). i am more familuar w/bb mopar than sb. i have seen bb casting w/up to 12 revisions on 1 casting #. stamped numbers on the block or desigations in the vin# will indicate the engine as built. the casting date should be cast on the block also. block casting #'s w/revisions may span a number of model years and overlap other casting.  numbers.hope this helps clear up some q"s --sheriff--


I'm pretty much onboard with everything that your saying, I'm thinking that the last digit, that revision jobber, I seem to remember some place, someone said that the number can indicate a police intercepter engine.  Or that its the quality of casting, so I'm remembering from someplace. I just can't reference it and which number it is. (2) or (3) or what?
Thanks
nothing that is cast on the block has anything to do with what an engine turns out to be. that info would be stamped on the id pad of the block or indicated with info as part of the vin# and not cast into the block. at the time of casting no one knows what will be the nature of the finished engine. --sheriff--


Thats cool, thanks again, I'm just not sure what I remember about what. I know sometimes you can pick up a piece of info and think that it is gospel, and when you least expect it... wham-o someone wakes you up with proof that its all who-wee.  

Thanks again, I will have to wait until the motor arrives to look at the ID pad and see the head castings say as well as pop the tin off and do a couple plasticgauge tests and some measurements.
1986 Dodge Ramcharger Royal SE 4x4, 360 auto

Offline chrysler300le

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RE: 360 block casting number quetion?
« Reply #5 on: July 19, 2004, 01:39:40 AM »
you probably caught the police engine thing from me.  The higher the number means that the parts of the sand casting was replaced and as the numbers get higher there is a possibilty that there is more core shift or a less ideal block.  Its not always that way though.  I read somewhere that the number starts off with a 2 which would be a perfect sand cast.  That info could be wrong cause i think i seen a 1 on a block somewhere.  As far as the police engine thing goes is, I have three police engines and all of them have a 3.  Police engines are cast with a higher nickel content and I'm sure Chrysler wanted to use the better sand casts so thats why probably all police engines will be a 2 or 3.  As far as small block Chrysler's go i've seen them from 2 up to a 16.
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Offline sheriff

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Re:360 block casting number quetion?
« Reply #6 on: July 19, 2004, 02:53:29 PM »
intresting article here on b/rb engine blocks. http://www.arengineering.com/articles/sonicbig02  == police engines are normally identified by k code in the vin#  (2nd digit)(price class) and a secondary code of sp. May be stamped on id boss or part of the vin#. i don't believe there was ever a special casting except for industrial appilications. truck or motorhome engines are identified with 2 or 3 series designation for heavier duty cycle engines. (heavier  trucks and motorhomes). this will show up as an eng code in the vin #. this does not reflect a special block casting, but rather heavier duty internals. a lot of the info i speak of comes to me from a (friend of mine) retired engineer at the engine plant. his function there was in quality control. ==sheriff==
« Last Edit: July 19, 2004, 06:27:24 PM by sheriff »
1967 r/t -- owned since new -- completely stock --58k "asleep-not dead"
1988 d150 -- 500" mag- MSII-SEQ port fi - eagle stroker-srp pistons-comp hyd roller cam/lifters/roc/gm coil paks "R/T-rapid transit"
1979 red exp-rescued-by barn
he/she who wastes time picking fly-shit out of  pepper will be left in the dust.
 pics - clk on gree

Offline Ram

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RE: 360 block casting number quetion?
« Reply #7 on: July 19, 2004, 05:08:23 PM »
sheriff, that is a good article. I don't know what the VIN number was, have no way of knowing or going back. I just have to go with what I get when I get it. Thanks again.
1986 Dodge Ramcharger Royal SE 4x4, 360 auto

Offline Ram

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RE: 360 block and head casting number quetions? Update ??'s
« Reply #8 on: July 29, 2004, 09:20:24 PM »
Ok, my block has come in! The block is 4006830-360-3 cast on 2-17-76, Right head is 4027596 casting 77 - 80 to 84?, Left head is 3769974 only cast 1975?, Intake 4100340-2 cast 3-6-79.  

Over all the valve train is clean looking and the rest of the engine with all the different casting numbers it must have been a re-man.  

My questions:

1 - will having different casting numbers on the heads make any real difference?
2 - block has the angled oil filter adapter, can that be swapped to the flush mount?
3 - this old a block casting will it be a better core for a rebuild if needed to rebuild?
1986 Dodge Ramcharger Royal SE 4x4, 360 auto