Sorry for the confusion ... it *is* a 307. I had the GMC 305 V-6 in one of my trucks and thought it was pretty much a boat anchor, so I guess I have 305 burnt into my brain housing group ...
Good input above -- thank you all.
We (Chris Sweet, John Vannatta and I) got the old engine pulled yesterday afternoon. For most of you above, it probably would have taken 45 minutes to an hour. It took us three brain surgeons about 4 hours. We ended up pulling the engine and transmission as a unit. This was my very first V-8 to mess with.
To celebrate, Sweet and I got up at 0500 and went Striper fishing.
This truck is a column-shifted 3-speed manual. The clutch pedal linkage bellcrank rotates on a shaft whose one end is on a plate bolted to the engine block ... ? ... If I specify a 350 for a 1969 application, will it have the holes for this plate?