Hello all
I have tried a couple of searches and have come up with unrelated topics so I guess I have to ask if anyone can identify an engine for me.

It's what I suspect is a late 1960's 250 Chevy as I have bought a fuel pump, points, cap and rotor for it guessing at what it is.

There is a number stamped behind the distributor that reads
F1IIOSKT.

I bought a 1955 GMC pickup with this engine transplanted into it.

Any help would be greatly appreciated!

Thanks---DAC


1955 GMC 100 later Chevy I-6