Tuning The secret to making monster peak power while still being driveable is the Pro-Flo single-plane intake and progressive 4V air valve that acts more like a dual-plane down low. Control offered by the valve and speed density system smooth the dramatic dips out of the torque curve caused by the pump shot and transition slots in a carburetor and can adjust for altitude changes using manifold density measurements, while port-style injectors eliminate the low-speed fuel troubles of a high-rise manifold. The system comes with a good baseline originated from your cam specs and engine size, but you can tune different profiles into the system to maximize performance, fuel economy, or change to a lower-grade fuel.
Adjusting the system doesn't require a laptop computer. The Pro-Flo uses a handheld module that looks like a calculator with simple arrow-up and arrow-down inputs with a flashing A/F-rich/lean indicator, real-time rpm, coolant, spark, vacuum, and voltage readings. There is a back-to-baseline panic button that takes you back to the original map if your tuning gets out of control.
Since you will have total control over fuel and timing, the system assists you with what is referred to as a Modifier to control them. For instance, after you set the timing at 10 degrees initial, you can dial-in +8 to -16 degrees in the Spark Modifier window. There are Modifiers for three ranges of fuel adjustability that will take you up to 50-percent richer or 30-percent leaner than the base fuel map at cold start, transient (pump-shot), and global (overall percentage). There are idle speed adjustments and even a rev limiter. It's going to take some trial and error and a copilot to dial in the system for WOT or 87 octane, but if you give Edelbrock accurate information about what you plan to do with the car and the specs, the baseline chip should keep the computer fiddling to a minimum.
ConclusionSo it looks very cool with the Victor Jr. single-plane, and you can tell your buddies you're running 1,000 cfm on the street. We like the compromise between full-dyno lab and a handy control module and the fact that the feedback is straightforward percentages and degrees instead of engineering lingo. We'd like to see a wide-band O2 and maybe some data-logging, and we've heard that there is a laptop interface now available that might do just that.