Page 132 of GM Goodwrench Engines Catalog by GM Goodwrench

GOODWRENCH SERVICE REPLACEMENT ENGINES Section V Page 131 August 2004 12339193 454 CID Reman 7.4L 1980-86 Chevrolet, GMC C2 CK3 (LE8)(7.4W) 1987-90 Chevrolet, GMC R2,3 (L19)(7.4N) 1987-89 Chevrolet, GMC RV2,3 (LE8)(7.4W) 1987-88 Chevrolet, GMC V3 (L19)(7.4N) 1988-90 Chevrolet, GMC CK3 G3 (L19)(7.4N) 1990 Chevrolet, GMC C1 (L19)(7.4N) Notes: Domestic 2 or 4 bolt main, unleaded fuel only. On all 76 models and 77-85 P3 (42) models, a new shallow oil pump, p/n 14067529, must be installed Replaces: 14105965 Replaced By: INSTALLATION INSTRUCTIONS No special installation instructions are necessary. Please refer to the general installation procedure section of this book. 12339194 454 CID Reman Leaded Fuel Only 7.4L 1974-80 Chevrolet, GMC C2,3 (454S) NM8 1980-86 Chevrolet, GMC C2 CK3 (LE8)(454W) NM8 1987-90 Chevrolet, GMC R2,3 (L19)(7.4N) NM8 1987-89 Chevrolet, GMC RV2,3 (LE8)(454W) NM8 1988-90 Chevrolet, GMC CK3 G3 (L19)(7.4N) 1990 Chevrolet C1 (L19)(7.4N) Notes: Leaded fuel only. 2-bolt or 4-bolt design. On all 76 models and 77-85 P3 (42) models, a new shallow oil pump, p/n 14067529, must be installed INSTALLATION INSTRUCTIONS All 1976 through 1990 C, K G P 123 trucks originally manufactured with 454 engines with the following restrictions: Remanufactured engine may be 2 or 4 bolt design. Not recommended for high-performance use. 1977 through 1985 P3 (42) models have shallow oil pan. For these models, new pump part number 14067529 must be installed in place of the pump supplied with the engine. 1990 production engines use ESC knock sensor. Remanufactured engines must be modified for use on 1990 vehicles by tapping the dipstick tube-mounting hole to 1/4-18 dry-seal pipe thread sealer for ESC sensor assembly. 12353125 454 CID Reman 7.4L 1982-86 Chevrolet, GMC C2 (LE8)(7.4L) 1982-86 Chevrolet, GMC CK3 (LE8)(7.4L) 1987-88 Chevrolet, GMC V3 (L19)(7.4L) 1987-89 Chevrolet, GMC RV2,3 (LE8) 1987-90 Chevrolet, GMC R2,3 (L19)(7.4L) 1988-90 Chevrolet, GMC G3 (L19)(7.4L) 1988-90 Chevrolet, GMC CK3 (L19)(7.4L) 1990 Chevrolet, GMC C1 (L19)(7.4L) Notes: On vehicles with shallow oil pan design, a new oil pump, p/n 14067529 with shorter pick tube, must be installed (1977-83 P3 models). 4-bolt main caps, crank and rod bearings are 0.010 oversize max. INSTALLATION INSTRUCTIONS No special installation instructions are necessary. Please refer to the general installation procedure section of this book.

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