Hy metalinker, your serial number breaks down as
3-1953
94 GMC 1 ton
43 pickup
09766, regular production number
Canadian GMCs especially the lighter ones could be equipped with Chevrolet engines, unfortunately 53-54 is the period of time in Canada when they were changing to the full presure lubed engines. If you could post some casting numbers from the block and head we could help with identifying what you have, casting numbers are raised not stamped. Some engine blocks have the casting number behind the starter, and lastly if it has a 216 in it a 235 or 261 is swapable with only a couple of glitches to overcome, hope that helps.
n
