This is a GM .020″ Oversize BORE size GEN IV L76 Series 6.0L Engine Short Block.
* Cast # :Â 12577461
* Description :Â GM .020″ over sized (4.020″) Cylinder Bore 6.0L L76 Short Block w/ new cam bearings. NO CAMSHAFT
 * information : block has been prepped (honed). Block is ready for assembly.Â
* Fitment : AFM / D.O.D Block. NO CAMSHAFTÂ Â Â
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