Replacing Holley 715cfm

[Joet5point9]

Hey guys.

I’m gonna be replacing the original Holley 715cfm carb on our jet cruiser. It’s paired to a Hardin Marine 400HP 454. It looks like Holley doesn’t make the 715 anymore. So my choices are to go with a 650 or 750. My initial thought was the 750. Anybody think the 650 may be more suitable?

-J

 

[Runs2rch]

Either would work, but quick math 454ci, 5500 rpm cfm would come in around 625 with a .85 ve.

So 650 would get it done.