Flathead oilpump question

OK, question two in a series. My Dad was looking in the flathead books and he is unclear on which way to go with concerning volume. Should he do a standard volume or high volume?
To refresh... we have a stock bore/stroke 46-48 flathead. Using stock pistons. A lumpy Schneider cam will work in conjunction with Edelbrock heads and 2 carb intake.
We used all new stuff and are using Fel-Pro oem quality gaskets (not the performance gaskets).
Should we go with standard or high volume; and why?

Thanks again. (if we get it together quick enough, it might be at the HAMB Drags...in spectator form)

 

If it were me i would use the high volume pump those bearings are big and i geuss they would need lots to drink

 

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If it were me i would use the high volume pump those bearings are big and i geuss they would need lots to drink

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Mo kiddin!! I as looking at what came out of the motor. Sheese!!! Them are big!!!!

I'm pretty sure we are going high volume, I'm just worried about gaskets sealing and blow-by.

 

Check the bore and re ring it and lap the valves she,ll be right

 

Thanks! Its all fresh stuff. (I guess I should have clarified) New pistons, valves, seats,seals, bearings...etc

 

The stock pump could barely make 30 Lbs. Same with the 48 thru early 49 8BA. After that Ford went high volume and 45 # was attainable. That pump was and is still sold as the Melling M19.
When using the M19 in a 59A style block use the 8BA pickup and screen. Be sure to use the original block mounted pressure relief valve.

The M19 is stocked at Speedway and others.

 

i don't mean to sound stupid,but what's this pressure relief valve you speak of?

 

i don't mean to sound stupid,but what's this pressure relief valve you speak of?

It releases if the pressure builds too high from clogged p***ages or whatever. In the early engines it is in the block, up front in the lifter chamber and next to the draft tube.
Failure to install will result in no pressure to the mains. I suppose you could plug also; but I havent fooled around with enough early engines to take that step to see if it is safe to do.

The M19 pump has a relief valve built in.

 

Thanks guys! I distribute for Melling... maybe we'll go that route!!!!

 

thanks 286...i've only messed with this 8ba i'm building and never heard of anyone mentioning that before