What pumps to use

[smythge]

Just got a new Holley 3780 below are the specs I am wondering what pumps most of you're running in the front and rear? I have both the 30cc and a couple 50cc's I can put in it.

800 CFM mechanical secondaries
4 corner idle
30 cc pump in front
30 cc pump in rear
Choke air horn removed and a blended main body

 

[redfastback]

it all depends on what it is going on. when does the cam power band start? do you get a hesitation from idle to main circuit from the pump now? do you have the cam as well as the diaphragm for the 50cc? you need to do the entire swap if so.