GM Full-Size Trucks 1970-1979 Repair Guide

Engine

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See Figures 1, 2, 3 and 4



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Fig. Fig. 1: Engine VIN location - inline 6-cylinder engines



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Fig. Fig. 2: Engine serial number location - V6 engines



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Fig. Fig. 3: Engine identification number location - V8 gasoline engines



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Fig. Fig. 4: Engine VIN locations - 350 diesel engines

The engine number is located as follows:

Inline six cylinder: On a pad on the right hand side of the cylinder block, at the rear of the distributor.

V6 and V8: On a pad at the front right hand side of the cylinder block, except for 1979 454 V8s, which have the code on a pad at the front top center of the engine block immediately forward of the intake manifold; and diesel engines, which have the code on a label attached to the rear face of the left valve cover.

Example-F1210TFA:


F-Manufacturing Plant. F-Flint and T-Tonawanda
 
12-Month of Manufacture (December)
 
10-Day of Manufacture (Tenth)
 
T-Truck
 
FA-Transmission and Engine Combination
 

 
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