chevys had 265 v8 or 235 six
if you wanted to stay GMC probebly would have to go with poncho engine dont know witch one would be stock
248 is a good engine but if it has a hole in the side of the block from the piston not much you can do expt keep the crank and head and outher spare parts


Luke Dahlin

1946 Chevy 2 ton
1966 Chevy 2 ton
1969 Chevy 3/4 ton 4wd
http://www.stovebolt.com/gallery/dahlin_luke_1969.html]1969 Chevy 3/4 ton 4x4