Big Block water pump housings what are the advantages or disadvantages between a driver's side and passenger side discharge.

I don't think any diff. it was just diff setup made due the location change of some stuff into engine bay.

The change allowed to fit the steering pump deeper into engine bay, then on smogger engines fit the air pump over this.

also not more belt iddler pulleys at Water pump being the steering pump works like the belt iddler

but talking about OUTLET SIDE ? I don't think any advantage or disadvantage

doesn't matter, which ever side your rad empties

pass side outlet on trucks

driver side outlet on cars

thats the way I see most of them

do they make an alum one with passide outlet?

does it change the t-cover and timeing marks like on a eairly SB and later SB?

I would use one on my truck if they did

i believe 440sourse has both sides available

I like the pass side ....effen at all possible ..

Either 73 or 74 they all changed to passenger side.

CORRECT! All cars and trucks switched to RH outlet in 73/74. I agree that it was done to fascilitate the use of the smog pump on the LH side.

I think the bean counters had more to do with the swap from left to right . Casting iron is cheaper than a brass radiator

I have a stcok drvrs side exit.