I know this is probably engine 101 stuff, but what is the difference between the long and short water pump?

I'm doing an engine swap from a L6-250 to a v8-307. Can you use either one on a 307?

What are the advantages and disadvantages of each?

I have a 69 c-10, would this application use a short or long water pump?

Thanx any info would be appreciated.


69 C10 LWB 250 L-6/3spd
79 C30 Crew Cab Dually 454 V-8/TH-400

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