therobski

Guys I'm going to change out the water pump on the 67 400E with A/C on this 64-F85 Pro-Touring car. Any comments on this water pump? Looks like a great replacement over the stock one. With all the mods on this build, I only wish to this once. Thank you.

oldsmoboogie

Ive had mine for 10 years with no issues. It will go on the new engine as well.

therobski

oldsmoboogie-nice to hear and I believe this is the right part number for an A/C ride. At this time just have maybe 3-4 drops of coolant on the shop floor traced back to the weep hole on the pump. This is my warning signal. I don't want to go on a ride like the 2019 Power Tour and have that fail. NOT.

Fun71

Be aware that the 1970-older engines use a larger water pump inlet and radiator outlet than the 1971-newer engines.

Spec on that pump from the Flowkooler web site:
Water Pump Inlet Diameter (in): 1.875 in

For a 1970-older engine the water pump inlet is 2" diameter. Sounds as if you will need a way to get a 2" lower radiator hose to seal up on a 1.875" water pump inlet nipple.

RetroRanger

I used the gates (or other popular hose MFG) reducer to to overcome the different sizes and they work good w no leaks

tmaleck

I have Flowcooler on mine. I really like it.

cfair

X2 on the flowkooler brand and design recommendation. I’ve found the quality very good.

I believe one of my flowkooler pumps has been on my Starfire since 2009. Not bad. Just make sure you order the right length (there were 3 - you’ll need the right one for your pulleys to line up)

Not to give you more stuff to do, but while you’re doing the pump, that’s a great time to get a new Hayden clutch fan, sand & repaint the fan itself. And if, you really get into it, pull the other brackets, sand and repaint them in stain black to clean up the engine compartment.

Cheers
Chris

bccan

Have had two FK pumps leak well before what I would consider an remotely acceptable expiration date. I even have one of them in the garage that I was going to send to Gould’s for a rebuild so that I wouldn’t give any more of my money to FK. Don’t get me wrong - nice looking, really pretty impeller, etc. I like them, the just haven’t lasted decently in my experience. Obviously, some have had good experience with them, put your money down & spin the wheel…

On one, I figured I would finish out “the season” before replacing so I used a long extension, tapped the weep hole, screwed a barb fitting into it & ran a small, clear hose to a crafts/condiment bottle as a catch can. Worked like a charm!

…

olds_freak

I've used two on two different engines over the years and have had zero issues with either of them. In fact, one is over 10 years old and still going.

oddball

Flowcooler uses a standard pump - some generic casting for iron, or the GMB casting for aluminum - and put on their impeller. The actual guts are the same. Still, it's a nice impeller. There is a noticeable difference in flow at hot idle. Does it matter? Maybe.

olds 307 and 403

I know Bill Travato says they flow too much water at high rpm. Even a spring in the lower hose eventually gets weak and collapses, according to him. I say the actual one with their own impeller might move more water. I have one with the plate riveted on, it probably doesn't do anything, may even flow less than a factory closed impeller. With all the space between the impeller and body is tge main issue. The other V6 diesel pump, about the last one available might actually do something with their billet impeller.