Well, my original assumption was incorrect...there was a sticker on both valve covers that said "Target Master 350 - General Motors Parts Division". Now I have another question...is this an aftermarket "crate motor" from GM or was this the original motor that came in a '79 Silverado? I looked up the casting number using the handy information above and it checks out as a 77 - 79 350 with either 2 or 4 bolt mains, but the stickers on the valve covers are sort of curious.


Daily Driver 63 C-10 LWB Fleetside