Hy Guys, as usual the Canadian trucks are somewhat different than their American cousins. Canadian trucks started being equipped with the Chevrolet 283 in 1957. Canadian GMCs were basically the same as Chevrolets, other than the grills, trim, and the dashboards. Canadian GMCs never used the Pontiac V8, or had GMC 6s in them, but used Chevrolet engines, the only exception was the Buick 322 that was used in the largest Chevrolet [1900 series] and its GMC cousin the [9900 series]. As a matter of fact when the V6 started to be used in the GMC trucks in the states, Canadian light trucks still used Chevrolet inline 6s, only the larger GMCs used the V6. I have never been able to determine why these differences in production exist, but have learned to deal with them, I hope that helps to answer some questions about the Canadian production differences.
