Free Holley 750 Vacuum Secondaries !!!

StumpDrummer · 02-19-2009, 07:08 AM

A friend just gave me an old 750 vacuum sec holly and now for heavy modding
Sterling Im gonna need some help here !!!
Im wanting to thread the primaries put an insert in them to reduce the diameter of the hole and butterflies if needed to reduce low end bog
Ive been reading about the angle of the insert throat, the top needs to be somewhere around 20 degrees and the bottom of the insert needs to be from 7-12 degrees

Does anyone know the size of the stock carburetor venturies that came with the 80 model 7?

02-19-2009, 07:08 AM	#1
StumpDrummer Rotary Fan in Training Join Date: Feb 2009 Posts: 31 Rep Power: 0	Free Holley 750 Vacuum Secondaries !!! A friend just gave me an old 750 vacuum sec holly and now for heavy modding Sterling Im gonna need some help here !!! Im wanting to thread the primaries put an insert in them to reduce the diameter of the hole and butterflies if needed to reduce low end bog Ive been reading about the angle of the insert throat, the top needs to be somewhere around 20 degrees and the bottom of the insert needs to be from 7-12 degrees Does anyone know the size of the stock carburetor venturies that came with the 80 model 7? __________________ How can we possibly know where we are going (as a people ) when we dont even know where we come from!