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Discussion in 'Trucks and Trailers' started by diana smith, Apr 16, 2000.
i am looking for info on motor size of 1975 GMC Silverado 3/4 ton? is is a 454?<p>thanks
Hi Diana<br>It very well could be. Look at the valve covers, if they are about 6-7" wide it should be a 454, if they are 4-5" wide then it is a smaller v8 engine.<br>Dino