sprink58

I an engineering the raw water pump arrangement for my Alpha to Bravo upgrade.I am running a pair of stout small blocks and am having trouble finding the right set up ...seems to be a lot of big block ideas however.

I am considering pulling water through the drives using a crank driven pump similar to this one;



Is there any reason that I don't know of that this will not work?

I have used this pump on 454's/502's and 3208 Cat's in inboard boats in the past with good results. I was however pulling through sea cocks and strainers.

If I can use this pump set up it sure will simplify things.

All thoughts and suggestions welcomed.

sprink58

OK...I spoke to the guys at Doller Marine about this today and was told that I am "Spot On" with this idea and should have no trouble with it at all. They made the point to say I need to make sure I connect the discharge correctly to the circulating pump and recommended a combination side and low water intake lower unit....they thought they came out in 2005. Everyone is steering me away from the low water pickup.

This simplifies my cooling issue greatly.

picklenjim

Could run them to thru hull pick ups. Seen them pumps on small block volvos.

mike tkach

looks like a standard omc pump,thats how they did it for years.

masi242

I know old thread just a question, could you use this same pump on a 454 and pull it thru and alpha drive, just some thoughts I`m having.

FIXX

your better off running water through a low water pick up off the transom..pulling the impeller cause's a air pocker and the pump will sometimes starve for water..

masi242

Thanks Fixx boat runs fine now I just like the thought of having a better pump than what the alpha has.

motor

If you are not having cooling problems, just let the alpha pump keep feeding your motor .An alpha drive needs cooling water running thru it. Running another pump on motor is probably more trouble than it is worth ...JMO