Page 131 of GM Goodwrench Engines Catalog by GM Goodwrench

GOODWRENCH SERVICE REPLACEMENT ENGINES Section V Page 130 August 2004 12532427 427 CID New 7.0L 1986-90 Chevrolet, GMC C6,7 (L43) MFI, MT9 1991-98 Chevrolet, GMC C6,7 (LR0) ME4, ME6, JE4 1992-96 Chevrolet, GMC P6 (LR0) 1994-96 Chevrolet, GMC B7 (LR0) Notes: Rocker cover may have to be swapped for some applications. See catalog for retrofit and RPO specific information. Replaces: 12524683, 10181240 Replaced By: INSTALLATION INSTRUCTIONS Part number 12532427, Goodwrench 7.0 Liter engine assembly, has been developed as a service replacement engine for 1986-1994 medium duty truck 427 C.I.D. engine applications. NOTICE: When using this engine to replace 1990 and prior applications, the following kits are required: Retrofit Kit Model Year Restrictions 15637119* C7 1990 LR0 w/M.T. 15637120* C7 1990 LR0 w/MF1 15637121* C7 1990 LR0 w/ME4, ME6 Trans 15662931 C7 1986-89 L43 w/M.T. 15662932 C7 1986-89 L43 w/MF1, MT9, IMT9 15662933 C7 1986-89 L43 w/ME4, ME6 15662932 P6 1986-90 L43 w/MF1, MT9, IMT9 *indicates kit includes oil cooling. Oil Cooling Kit Model Year Restrictions 15662081 C6,7 1986-90 LR0, L43 w/oil cooling 15662081 P6 1986-90 L43 w/KPS (exc. BQG) 15662082 P6 1986-90 L43 w/KPS and BQG Air Compressor Kit Model Year Restrictions 15637482 P6 1986-90 L43 15637482 C6,7 1986-90 L43 15637483 C6,7 1990 427 LR0 VIN "H" NOTICE: This engine comes equipped with an 8" front damper. On 1991 through 1994 trucks, you must purchase a new water pump and lower radiator hose. For 1990 and prior, you must replace the water pump with part number 12529747 to clear the 8" damper. Year Water Pump Hoses Usage 1991-94 12529192 15967462 Exc. MWE 1991-94 12529192 15967464 w/MWE 1986-90 12529747

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