Originally Posted by slickman
Now a question, other then getting a main body with no choke horn, whats the reason to switching from the Holley main body to the proform?
If you have a Holley HP carb or Holley HP center there is no advantage! NONE! In some cases IE: 850cfm it will be worse!
Proform does make a more universal part for multiple applications. Holley makes specific parts. More precise, and less cost effective.
Holley does not make a universal Vac secondary main body. Only a HP replacement part Big $$$$
The only aftermarket ready available center section from Holley is for a 4 corner Idle, Manual secondary 750/850 Part# 134-300S or C http://store.summitracing.com/partde...5&autoview=sku
The Holley unit is price competitive with the Proform units.
In my experience this is a better center compared to the Proform 67100C.
The Holley is the same center section used on the 750/850 HP Holley unit also comes as a kit, all gaskets (reusable), recomended jets, two sets of air bleads, nozzles installed, needed to make the change. The other main body's sold as replacement parts by Holley for the other HP models is not price competitive. The last 950cfm center I purchased cost me 200.00??
Proform units available.
CARBURETOR MAIN BODY - Carburetor Main Body 650 CFM; 700 CFM; 750 CFM; 800 CFM;
CARBURETOR MAIN BODY - Carburetor Main Body 750 CFM Vacuum Secondary Carb;
CARBURETOR MAIN BODY - Carburetor Main Body 950 CFM;