I've been searching for info on this but haven't found anything... I have a 92 Sunbird, OMC 4.3 non-HO with stock 2bbl 500CFM Holley carb. Previous owner had the motor replaced with a 96 rebuilt longblock with Vortec heads.
What if anything needs to be done to rejet the carb (and/or powervalve) for the higher airflow?
I'm still working on getting the boat running well but I have noticed the plugs are pretty white. Carb has been rebuilt to the exact '92 specs -- #70 jets and 2.5 power valve.
(I'm not a carb expert but my initial reaction is, no, it doesn't need to be rejetted. More air flow should just pull more fuel. Right?)
Thanks!
Edit - it's a 500CFM carb, not 600CFM... 80312
What if anything needs to be done to rejet the carb (and/or powervalve) for the higher airflow?
I'm still working on getting the boat running well but I have noticed the plugs are pretty white. Carb has been rebuilt to the exact '92 specs -- #70 jets and 2.5 power valve.
(I'm not a carb expert but my initial reaction is, no, it doesn't need to be rejetted. More air flow should just pull more fuel. Right?)
Thanks!
Edit - it's a 500CFM carb, not 600CFM... 80312