Jet size starting point

Could someone give me a good starting point for jet sizes on a Quick fuel fx-4712 1250cfm on a 557. 14-1 compression, ported A-429's, victor 460 intake and .785 int/.761exh 276/287 @.050. All out mud racing 2 1/8 open headers.

Gasoline??...I'd probably start with 88's and go from there. Or call QF tech line and get their recommendation.

https://www.holley.com/products/fuel_systems/carburetors/quick_fuel/drag_race/qfx_series/parts/FX-4712

Stock is 94 no power valves. Hit SPECS on the link and you can see the factory settings.

Thanks guys!

supervel45 wrote:https://www.holley.com/products/fuel_systems/carburetors/quick_fuel/drag_race/qfx_series/parts/FX-4712

Stock is 94 no power valves. Hit SPECS on the link and you can see the factory settings.

YES ... starting with the jets which came in it, would be a preferred starting place.

Oops, I was thinking 1050.

What fuel are you planning to run?