What year 350 engine blocks fit our trucks?

[Pillow]

I know a completely newbie question. I apologize in advance on that

What year range 350 blocks will fit in our 67-72 trucks?

Later years might be fuel injected and not have a fuel pump mounting location. But what year would this changover occur?

Also perhaps a consideration for the clutch pedal shaft mount, thing. I have heard rumor that late model blocks do not have bolt holes for it ???

On more issue may be a two piece vs one piece flywheel seal??? Not sure what that means at all or any impact.


Any help is greatly appreciated! It is time for a winter engine build.


Thanks!