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Old 09-18-2009, 04:52 PM
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Numbers above the oil filter question

Can anyone tell me what these number mean. They are located above the oil filter. The casting numbers for the block is 3970010 The block date code is C317. Thanks, Dan

It reads: WR
010
118 N






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Old 09-18-2009, 05:40 PM
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Quote:
Originally Posted by dan1s
Can anyone tell me what these number mean. They are located above the oil filter. The casting numbers for the block is 3970010 The block date code is C317. Thanks, Dan

It reads: WR
010
118 N





The important one is in the lower picture 3970010 which is the casting number, and it's a damn desirable one.

Bogie
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Old 09-18-2009, 05:51 PM
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Why is that it's just 3970010.
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Old 09-18-2009, 06:02 PM
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Quote:
Originally Posted by dan1s
Why is that it's just 3970010.

The 010 casting is one of the heavy duty 4 inch bore block castings, it was found from the racing 302's thru the performance versions of the 327 and 350 engines and is widely used for truck and industrial engines. It is found with 2 bolt mains and often with the highly desireable 4 bolt mains.

When the going gets tough, the 010 block is a tough place to go from.

Bogie
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Old 09-18-2009, 06:12 PM
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The rest of the #'s around the oil filter area are meaningless, they are just Foundry internal use #'s for things like the core boxes used and such for production tracking and QC purposes.
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Old 09-18-2009, 06:24 PM
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So the WR woldn't be the suffix code. I'm asking this because the one that I have on the front of the deck is unknown. And there is no vin. I was thinking that it was restamped at one time and someone got it wrong.

My block is a 2 bolt main. The crank is 3932442. I know that this is a normal crank. The heads are 3932442 Date codes are pass side E 7 70 drivers side B 4 70. My intake is 3927183 standered 2 bbl Rochester.

Also I herd that it was good to have the hex bolt above the oil filter.
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Old 09-19-2009, 11:27 AM
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Other locations for the 010,020 Tin & Nickle content markings. > http://www.chevytech.com/2c42o8.html
Core Shift to look for. > http://www.chevytech.com/2c42o9.html >> http://www.chevytech.com/2c42o3.html
3970010 Info.> http://www.chevytech.com/2c42o15.html
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Old 09-19-2009, 06:53 PM
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Thanks for the help.

So I guess this is better then nothing.



I am planning on putting this into a 94' surburban. Does any one know if there would be a problem with using the distributor from the original 94' 350?

I am going to keep the TBI system on it as well.
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Old 09-21-2009, 03:30 AM
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The 94 distributor will work, no problem .
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