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Need help with Engine stamp and casting #s

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Old 08-12-2018, 06:25 PM   #1  
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Join Date: Feb 2013
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Car: 1985 Iroc-z28
Engine: 5.7l TPI
Transmission: 700r4
Axle/Gears: Stock

Need help with Engine stamp and casting #s

Having trouble figuring out what engine is in my iroc here, the casting number is 1024C880 the C may be a 3 which comes up as either a L31 or ZZ4 but my engine stamp doesnt match either of those crate motors, engine stamp number is posted in the picture below
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Old 08-12-2018, 06:34 PM   #2  
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Re: Need help with Engine stamp and casting #s

https://www.mortec.com/castnum.htm

Looks like a 95-00 350 block.
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