So the water pump on my 413 Industrial motor is huge. The lower hose on that things is at least a 3 Inch hose and the top is at least 2 inch. What am I gonna do about a radiator. This motor is going in a 85 dodge shortbed truck. Am I gonna have to find a 4 core radiator like for a imperial or new yorker. Help me out guys. Thanks.

 

Step the hose size down with a "Bell Reducer" and some "Close Nipples"... Thats going to be the cheapest way to get their....
Grind them down smooth and paint them with a can of chrome paint....

 

If you have an Oreilly nearby, with somewhat knowledgable people behind the counter, they should be able to look up a radiator that will fit based on the inlet/outlet sizes.

I know, assuming that an auto parts store employs a knowledgable staff is asking a lot. lol

 

I don't know if you could put a standard water pump housing on the motor ? Post a picture.. Have you checked into the crank shaft / flex plate match !!

 

Use a water pump and radiator for a mid 70s pu with a 440 0r 400, the heads have ports at each end and will have to be plugged. Most of the time the heads are swapped for standard automotive heads.

The industrial 413 was very low compression so if you swapped heads and tried to get them down to 8o cc ,you might get close to 9.0-1. You could also get away from the odd exhaust bolt pattern if you wanted headers.