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Help with casting number ?

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Old Feb 11, 2007 | 11:35 PM
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Default Help with casting number ?

I'm looking to find out what type of small block engine has a casting number of 3970010.

Thanks...
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Old Feb 11, 2007 | 11:37 PM
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Standard 350 ci engine produced for many years in various flavors from the LT-1 to truck engines. Generally considered a good candidate for rebuilding. Inards can run the gamut from mild to wild.
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Old Feb 12, 2007 | 12:44 AM
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Originally Posted by GaryS
Standard 350 ci engine produced for many years in various flavors from the LT-1 to truck engines. Generally considered a good candidate for rebuilding. Inards can run the gamut from mild to wild.
Does it possibly have a forged crank or 4 bolt main?
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Old Feb 12, 2007 | 01:16 AM
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Default Casting #

Block # 3970010 was for 69 through 79 vettes. 69 and 70 were 4 bolt. 71 through 79 were low horse motor was a 2 bolt high horse a 4 bolt.
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Old Feb 12, 2007 | 07:39 AM
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Originally Posted by sting66cp
Does it possibly have a forged crank or 4 bolt main?
This casting was used for many years in everything from station wagons to Impalas to Vettes. The only way to know for sure what is in there is to open it up. The codes stamped into the block might give you a clue based on the original application. Even then it might have been apart before.

-Mark.
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