10-14-2018, 05:55 PM | #1 |
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Join Date: Aug 2009
Location: Ft.Collins, Co.
Posts: 103
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Block I.D. ?
Just picked up a used 350 . Casting # on the rear of the block is 3970010 . The casting # on the pad on the passenger side front block is V0302TJA . Do I have anything special here ?
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10-14-2018, 06:31 PM | #2 |
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Join Date: Aug 2018
Location: GBR !!
Posts: 144
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Re: Block I.D. ?
All depends on the nickel content of the block, anyone can stamp letters on the deck of the block to make it what they want. Thousands of 010 blocks were made, so when you ask if its special, it only can be special because its yours.
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10-15-2018, 01:14 AM | #3 |
60-66 Nut
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,248
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Re: Block I.D. ?
No nothing special. It's either a '73 or a '79 350 from a truck. It could be a 4 bolt.
http://www.nastyz28.com/gm-chevy-cod...s-suffix-7.php
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10-16-2018, 06:23 PM | #4 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
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Re: Block I.D. ?
3970010 was the most common 4" bore block GM ever made. All this "high Nickle" stuff isn't gonna make anything more valuable with these blocks. They are good sturdy blocks and will be 2 or 4 bolt main.
Gary
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10-18-2018, 08:43 AM | #5 |
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Location: GBR !!
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Re: Block I.D. ?
Yea, the nickel content is most likely a myth but I was hoping someone would jump in and add valuable information on how someone would know the tin/nickel content of a GM 010 casting. What does the 010 020 on the front of the block represent, that maybe a myth as well.
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10-25-2018, 08:02 PM | #6 | |
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Join Date: May 2011
Location: mich
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Re: Block I.D. ?
Quote:
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10-26-2018, 04:52 PM | #7 |
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Join Date: Oct 2005
Location: Northern Arkansas
Posts: 1,136
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Re: Block I.D. ?
Actually it's an extra 1% tin and 2% nickel.
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10-26-2018, 06:16 PM | #8 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: Block I.D. ?
What I have seen on the 10/20 blocks, is less wear on the ridge....they tend to clean up, on a .030 bore after 100 to 125 tho? Longhorn
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