If it has the 3 bolt caarb it more than likely does not have a steel crank whereas that would be an earlier industrial engine, C1TE blocks had steel cranks and some C2AE.
I picked up an industrial block and it had 3 lines between distributor and carb, holly 4 Barrell. The trucks had 2 lines, one for advance and the other to regulate the rpm's to normally about 3800. this 3rd line on the setup I got must be some sort of governer to maintain a certain load or something. Someday I will set it up on a test motor to see what it does. the motor also had the C1TE rods in it and the forged pistons.
Other than that, I have found them in an old well drilling rig and my brother used to use a forklift at a place he worked which came factory with a Y block.

55 Vicky & customline
58 Rack Dump, 55 F350 yard truck, 57 F100
59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?