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Crate motor casting number 10243880= ?

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Old 12-23-2008, 11:45 PM   #1
Dean757
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Default Crate motor casting number 10243880= ?

Hi, I just purchased a C-2 vette with a crate motor . The info on left rear of block : GM 5.7L New Mexico . Rt rear of block casting number 10243880. Seller said it was purchased from Jegs as a complete engine minus carb,exhaust manifold etc.and is a 350 with 355 hp. ZZ4. Does this block casting number match up to the description on Jegs web site? If this is correct I have 4 bolt mains,a roller cam and Nice valves/heads. Has a Holley 600cfm and headers. Thanks Dean
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Last edited by Dean757; 12-24-2008 at 12:51 AM. Reason: car pics later
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Old 12-24-2008, 12:05 AM   #2
CWerner
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my ZZ4 block has a stamp pad on the front of the engine (passenger side) with the casting number and ZZ4 stamped on it.
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Old 12-24-2008, 12:29 AM   #3
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Originally Posted by CWerner View Post
my ZZ4 block has a stamp pad on the front of the engine (passenger side) with the casting number and ZZ4 stamped on it.
Thanks I will check it when I pick it up ,Since It was a crate motor I did not even look on rt front pad for suffix and vin. I was surprised to see the cast number on rt side of block instead of left as in period 327 engines . It sounds great and has healthy oil pressure. Dean
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Old 12-24-2008, 06:54 AM   #4
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From Mortec:

10243880...350...95-00...2 or 4...Vortec truck, Gen.I crate motors and "ZZ4", roller cam, one piece rear seal
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Old 10-26-2016, 07:53 PM   #5
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Ok i have a motor that has 10243880 can anybody tell me what vehicle's it possibly came out of trying to match a starter to it its currently in 86 high sierra 1500 4x4
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Old 10-26-2016, 07:55 PM   #6
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10243880 motor
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