Thread: Dual Quads with 450cfm or 600cfm?
View Single Post
  #14 (permalink)  
Old 07-23-2008, 02:05 PM
Seaman Seaman is offline
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2002
Location: Hockley, TX
Cobra Make, Engine: Power Performance Body, Contemporary chassis, 427 CO, Big I/O toploader, AMP Billet rear, Trigo 6 pin
Posts: 51
Not Ranked     
Default
I ran the 450's and now have the 600's. The 450's have a mechanical secondary actuation and the 600's are vacuum actuated. I think the 600's are much smoother through the entire band. The 450's seemed to be either on or off, but possibley I just didn't have them tuned correctly. With the vacuum secondaries, you can over size the cfm as the engine will pull only what it needs. Jet it correctly and all is good. I also switched from the progressive linkage to fixed, bringing both carbs in simultaneously. Much better.
Dave
Reply With Quote