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Old 07-18-2012, 09:05 PM
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G M engine block casting #

I have a G M engine block casting #3970010,what is it and what is the info per this # ?

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Old 07-18-2012, 09:16 PM
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Google it or do a search on this site, you'll find lot so information. Look here too Chevy VIN, Trim Tag and Drivetrain Information & Decoding
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Old 07-19-2012, 12:07 AM
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Originally Posted by DBLLIFE44 View Post
I have a G M engine block casting #3970010,what is it and what is the info per this # ?
The "010" block is a very common SBC block. Can be 4-bolt or 2-bolt (performance and heavy duty applications got the 4-bolt bottom end), it has a 2-piece rear main seal, 4" nominal bore size, and a large journal crank (there are small journal (SJ), large journal (LJ) and 400 SBC journal sizes).

Complete decoding info can be found here.
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Old 07-20-2012, 02:27 PM
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1969 to 1975 350
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