450 cfm carb.

[Fordestes]

it is a 4548-s, I found a choke set up on line , will a choke set up off a dual pumper work or is there a specific group for the choke hardware change over on smalller and larger carbs?

[51 MERC-CT]

Originally Posted by Fordestes

it is a 4548-s, I found a choke set up on line , will a choke set up off a dual pumper work or is there a specific group for the choke hardware change over on smalller and larger carbs?

The Holley 45-225 choke kit should work on that 4150 series carb.
Also that carb probably has around #57 jets (probably too rich)
Try #51's and go up or down from there.
Get some new float bowl and metering block gaskets ( you most likely will need them)