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Old 04-10-2013, 03:08 PM
jwc jwc is offline
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chevy block cast numbers

I have a sb chevy block full circle rear main that has no stamped id numbers or letters. on the drivers side of the block between the freeze plugs 099 is cast into the block and on the bellhousing flange there are these letters and numbers co 5.7lt gm sg1 can anyone tell me what I have? jwc

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Old 04-10-2013, 05:19 PM
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No numbers stamped on the pad in front of the passenger side head, on the block ledge? Also, what are the six digits cast into the top bell housing mount area on the drivers side?
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Old 04-10-2013, 10:37 PM
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sb chevy block cast numbers

that is my problem there are no stamped in numbers or letters. just 099 cast into the drivers side between the freeze plugs and the following cast numbers on the bellhousing lip co 5.7 lg gm sg1 it is a newer block with the full cicle rear main seal. I have not found anything as yet looks like I will be taking her apart to see what I have got. jwc
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Old 04-11-2013, 05:20 AM
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Quote:
Originally Posted by jwc View Post
that is my problem there are no stamped in numbers or letters. just 099 cast into the drivers side between the freeze plugs and the following cast numbers on the bellhousing lip co 5.7 lg gm sg1 it is a newer block with the full cicle rear main seal. I have not found anything as yet looks like I will be taking her apart to see what I have got. jwc
Ayuh,.... It's a late model 350, What exactly are ya tryin' to find out,..??
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Old 04-11-2013, 06:24 AM
jwc jwc is offline
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anything I can like the year, what in came in, horse power, and anything else. did you find the casting numbers/letters? thanks for the quick reply, jwc
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