seawalkersee
Registered User
Does anyone know the primary jet sizes for the 600 and 650 Holly with vacuum secondaries?
Chris
Chris
Chriss....Very important on a vac sec card is the spring for the secondaries. If you feel anything more aggressive then a smooth transition your secondaries are either opening to late or to soon
So....for my next question... Who here has a bit of knowledge about carbs? I have the body of one that has all of the same size boosters. It is a vacuum secondary setup. I also found the body to one that has MUCH larger primary boosters. Is there an advantage to this? Is the throttle response better since technically it should suck more fuel through the larger boosters? Will it pull too much fuel causing the carb to load up?
The second body also has many less circuits on the primary side. So I am confused. I think one of them is an emissions carb and the other is an aftermarket. I dont know so I am hoping one of you can shed some light.
Chris