They had 216s and 235s with the same short side cover between 1950 and 1952.

Your friend on the HAMB would have to post the casting numbers to tell if they were US or Canadian. I was surprised to see that there was no stud and nut on the end of the manifold. My replacement head is from a car and it has threaded studs on each end of the head.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!