You probably ought to know that if you ever have a boat fire, your insurance will NOT cover your loss if they discover that you are using a Non-marine fuel pump on the boat. Technically, they can refuse to cover ANY loss on the boat due to the unapproved fuel pump.

If you do run non-marine fuel pumps, it's your choice to do so, but I want to make sure you know that it is a choice that could have negative consequences later..

MARINE pumps are explosion-proof, have a dedicated vent fitting on the area above the primary diaphragm, and are designed to be plumbed to an above-the-throttle-plate fitting on the MARINE carb.

Last fuel pumps I put on a Carbed 502 were Carter mechanicals with a Crusader part number. I paid less than $80 apiece and I DID have to re-index the inlet position, but they worked great.

MC

You deffinately want the Holley marine version which you can get at Jegs.
http://www.jegs.com/i/Holley/510/712...oductId=751733

Firehawk, you could probably convert that Jegs pump into a marine style pump. I believe all you would need to do is drill out the plug thats in the upper half of the pump and install a nipple. (See the link to the holley marine pump) Then connect a hose and run it to your flame arrester. May have to put a fitting on your flame arrester if it doesn't already have one.
Picture of Jegs pump.
http://www.jegs.com/i/JEGS-Performan...rentProductId=

Picklejim will do thanks, needed a winter time project anyway. Doesnt look to tuff

Ahhhh. My bad. Just assumed that you had a raw water pump. With that BBC, I would highly suggest you consider a winter project of installing a raw water pump and either a hull or transom water pickup. Transom would be the preferred method. Do you really trust that tiny pump in the outdrive to supply the necessary amount of water to that BBC? Besides, the lower water inlets are to easy to get clogged and/or blocked. IMHO

Actually, that "tiny" pump in the drive is why I love this boat. I have had many different boats with big block Bravo's, and have had lots of overheat problems. Burning up sea pumps, restricted transom plate hoses, and temps all over the place. I tried a Merc offshore transom pick-up on my 242 Formula, and it was constantly clogging with sea grass and causing an overheat. This boat runs at 160 all day, every day. It has never overheated on me once. Every year I service the Alpha and install a new Merc pump and housing kit, and it works flawlessly for me. If I can get a fuel pump with stable pressures, I'll be all set...lol.

Randy, Stick with what works for you. Did you consider installing a fuel regulator AFTER the pump?