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Old 07-04-2010, 04:08 PM
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Default what is this motor

I have a late model GM crate motor

it is stamped GM 5.7LG SGI, has four center bolt valve covers.
casting 10243880, Looking up the casting says it is a ZZ4

Last edited by gfrench; 07-04-2010 at 04:52 PM.
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Old 07-04-2010, 05:46 PM
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ZZ4 is this 350 crate engine: http://www.summitracing.com/parts/NAL-12499712
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10243880, 57, 57lg, block, chevy, code, crate, engine, generation, gm, lg, lgsgi, motor, sgi, small

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