How good are the Street Avenger Holleys? Never tried one. I like that they have dual metering blocks and jetable secondaries.
The only personal experience I have is with the 670 SA on a 4V Cleveland and then on a mild 460. They are generally calibrated a bit on the lean side and they have accelerator pump issues due to return spring interference with the pump lever.
Like anything else they can be made to work.
1973 Mustang Convertible
460 D0VE-C Heads w/CJ size valves, Lunati voodoo 227/233 cam, Edelbrock performer rpm manifold, FPA headers, Holley 950 HP carb, C6 w/2500 stall converter, 3.25 trac lock