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Old Jan 16, 2007 | 12:57 PM
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Default Block Casting #

Can anyone give me specifics on a block castings # of 3782870? Thanks
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Old Jan 16, 2007 | 01:05 PM
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if you mean use in a Corvette, 62-65 Corvette, SB.
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Old Jan 16, 2007 | 01:27 PM
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3782870....327...62-67...2
http://www.mortec.com/castnum.htm

Small journal, 4 inch bore. What more do you need?
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Old Jan 16, 2007 | 01:45 PM
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Thanks for the info and the mortec website!
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Old Jan 16, 2007 | 05:26 PM
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I have one more question. I'm trying to research these #'s on the heads and the block. They are the same. I think it is the engine assembly date? #57058??
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Old Jan 16, 2007 | 06:34 PM
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You will find the assembly date "stamped" on the pad.

The cast date of the block and heads will be in the form of "letter" A-L (month: Jan-Dec) 1-31 (day of the month), single digit year (2-7). At least on this block. Something like A 10 6 (Jan 10, 1966) as an example.
Other may have two digit year.

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Old Jan 16, 2007 | 06:39 PM
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Originally Posted by knight37128
3782870....327...62-67...2
http://www.mortec.com/castnum.htm

Small journal, 4 inch bore. What more do you need?
the 870 block....according to the Black Book was not used after 65...?
Mortec is broader in its assesments on and in it uses of blocks

jack
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Old Jan 16, 2007 | 06:45 PM
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Originally Posted by 66jack
the 870 block....according to the Black Book was not used after 65...?
Mortec is broader in its assessments on and in it uses of blocks

jack
There are other cars besides a corvette.
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Old Jan 16, 2007 | 06:47 PM
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Originally Posted by 66jack
the 870 block....according to the Black Book was not used after 65...?
Mortec is broader in its assesments on and in it uses of blocks

jack

yes, I am with you, see my post above; but to be completely accurate, it was used in other GM cars after 65
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Old Jan 16, 2007 | 07:02 PM
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Originally Posted by knight37128
There are other cars besides a corvette.
Oh there are there... those are words....
I didn't read all the posts...my fault

jack
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