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Old 01-18-2005, 02:51 AM   #1
1-bad67
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gm casting numbers

undefinedundefined
i am having trouble looking up my head casting numbers
i am coming up with with 3876776
i have found one super close but unless i am mistaking
the last number for a 5 i have no clue what heads i have
the block # is 3970010 ....no idea if their even from the same engine
to begin with

Last edited by 1-bad67 : 01-18-2005 at 02:56 AM.
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Old 01-21-2005, 05:03 PM   #2
Ground Rat
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Quote:
Originally Posted by 1-bad67
undefinedundefined
i am having trouble looking up my head casting numbers
i am coming up with with 3876776
i have found one super close but unless i am mistaking
the last number for a 5 i have no clue what heads i have
the block # is 3970010 ....no idea if their even from the same engine
to begin with

Is it a SB or BB? Chevy?
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Old 01-23-2005, 02:15 AM   #3
1-bad67
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Help

Quote:
Originally Posted by Ground Rat
Is it a SB or BB? Chevy?

i have a bit of an update
the casting # on the heads is3876775 which as far as i can
tell is a 60-67 327 head... it does have an acc. hole on pass side
the date code says c166??? no idea how to decode that
the block is 3970010 which works as a 350 or 327 block
the code on the front of the engine has a TBM suffix
i guess a 350 from what i read online but the years are different
so do i have a 350 block w/ 327 heads
or a 327 that i misdecoded......
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Old 01-23-2005, 05:50 AM   #4
Wally
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Does this help a bit?

http://www.gearheadracing.com/Refere...ting/SBCCN.htm

http://www.gearheadracing.com/Refere...ng/SBCHead.htm

from this site it looks like they are truck heads

http://www.donsautopages.co.nz/chevheadnumbers.htm

Last edited by Wally : 01-23-2005 at 05:58 AM.
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