Speed Demon 650cfm vs. Holley Street Avenger 670cfm
(Both electric choke/vacuum secondaries)
My friend is debating which to go with, the speed demon comes in at $400 bucks which is a lot more to spend over the Holley but is it worth it? Will the Holley give the same performance as the demon? The engine is basically a stock 396 with nothing changed but the intake, headers, and hei.
Chad - 1972 Chevelle SS
- Trick Flow 62cc Heads
- RPM Intake, Speed Demon 650 VC/EC
- Voodoo 276, Hooker 1 5/8 Headers
- Muncie m20, 3.73's + posi coming soon to appease that cam..